Thirteenth Doctor

While she was no stranger to keeping secrets herself, the Thirteenth Doctor lived a life full of conspiracies and unearthed truths that left the Doctor unsure of her own identity. Though she managed to hide her insecurities behind a dynamic, curious and endlessly caring persona, she would unleash her furies in short outbursts when in the heat of a stressful moment. However, these moments were few and far between, with the Doctor usually believing in hope, compassion and providing help to anyone who needed it.

Her initial travels were relatively carefree, with her simply enjoying showing the universe to Graham O'Brien, Yaz Khan and Ryan Sinclair, whom she called Team TARDIS and considered her "fam", after they chose to join her upon helping her recover her TARDIS following her losing it in her post-regenerative trauma.

These carefree travels came to end, however, with the return of, who teased a secret to the Doctor after he caused the second documented destruction of Gallifrey. As she processed her home being lost again, the Doctor encountered the Fugitive Doctor for the first time since her mind was wiped by the Division, a secretive organisation founded on Gallifrey, cluing her into a secret history predating her alleged first incarnation. As her history began to unravel, the Doctor was finally told the truth by the Master when they reunited on the ravaged Gallifrey; the Doctor had once been the Timeless Child, found by Tecteun, the Other of the Founders of Gallifrey, who had experimented on the Child to uncover the secrets of regeneration before handing them over to the Division. Separating herself from her friends to protect them from the Master, the Doctor was imprisoned in a Judoon prison before she could fully digest what she had learned about the Timeless Child.

After she was rescued by Jack Harkness, the Doctor returned to her friends, but arrived ten months after they last saw her, and Graham and Ryan decided to continue with their lives on Earth, while Yaz decided to continue her adventures with the Doctor, having had trouble readjusting to a normal life after being fully immersed in the Doctor's world. Though she treated Yaz as her co-pilot, the Doctor kept her in the dark as she tried to find evidence of the Division to get answers regarding her stolen memories.

After finding a lead in the Lupar Karvanista, the Doctor and Yaz pursued him to Earth as he went to collect Dan Lewis, the human he was species-bonded too, in order to protect him from the Flux, a force which would take apart the very structure of the cosmos, bringing about the end of the universe. With old foes resurfacing from a past forgotten and remembered, the Doctor and Yaz, joined by Dan, forged alliances with new and old friends in order to bring an end to the Flux, which culminated in the Doctor finding Tecteun in the gap between universes, where she found her stolen memories within a Biodata module and learnt that the Division, led by Tecteun, had unleashed the Flux to destroy the universe as they prepared to leave for "Universe Two". However, Tecteun was swiftly killed by the Ravagers and, as the Doctor's allies neutralised the Flux, they brought her before the personification of Time, who disintegrated them for their failure and allowed the Doctor to leave, but warned her of her looming fate.

Now knowing her end was nearing, the Doctor contemplated her feelings for Yaz as they escaped the likes of Dalek Executioners and Sea Devils, until they talked over their feelings for each other, electing to maintain their platonic friendship after realising a romantic relationship wouldn't last, with the Doctor ultimately forced to regenerate by the Master in a plot to take over her body, though Yaz was able to reverse the regeneration and bring the Doctor back. However, the Master, unable to accept defeat, fatally wounded the Doctor using the energy beam of a Qurunx, and she regenerated into her next incarnation after amicably parting ways with Yaz.

A day to come
When the Tenth Doctor encountered the "Vortex Butterfly", he was cryptically told that he would not be "limited" to "thirteen lives." (COMIC: Vortex Butterfies)

Dalek Caan once foresaw that the Doctor would go from "the oncoming storm" to "the oncoming stormstress". (PROSE: Dalek Caan) Whilst under the control of SERVEYOUinc, the Eleventh Doctor, serving as the "Chief Executive," learned his companion Alice Obiefune took on the title of the Doctor. He quickly noted that a female Doctor would do well in the market, thinking he could use the idea for SERVEYOUinc to sell items like toys and t-shirts. (COMIC: The Other Doctor)

When the Twelfth Doctor broke his toe, Clara Oswald suggested that he regenerate to heal the injury, but he berated the idea as a waste. (PROSE: The Blood Cell) When threatened by Captain Lundvik, the Twelfth Doctor told her she would have to shoot him, Clara Oswald and Courtney Woods, but warned that she would "have to spend a lot of time shooting [him] because [he would] keep on regenerating." Clara, during a falling out with the Doctor, later threatened to "smack [him] so hard [he would] regenerate". (TV: Kill the Moon)

Upon travelling to Essex in 1138 AD after meeting a young Davros, (TV: The Magician's Apprentice) the Twelfth Doctor thought on his past incarnations and his future. Thinking he would be the Doctor forever unless faced with a crisis that killed him, he suspected he would have better eyebrows than the incarnation who came next. (PROSE: Full Stop) While suffering from the common cold, the Twelfth Doctor, overreacting to the illness, considered the possibility of needing to regenerate. (COMIC: The Day at the Doctors) When the Twelfth Doctor confronted in Gallifrey's Drylands after escaping from his confession dial, Rassilon contemplated using his gauntlet to force the Doctor to regenerate as a method of torture, wondering how many regenerations the Eleventh Doctor had been granted by the Time Lords, but was interrupted before he could attack the Doctor with the gauntlet. (TV: Hell Bent)

The Twelfth Doctor once gazed at a female mannequin positioned in the doors of the TARDIS as if he held knowledge of his next incarnation being female. (PROSE: A Good Man) The Twelfth Doctor was forced through seven false regenerations by a "regeneration vampire". With the assistance of the Eleventh Doctor, the regeneration energy he expended was returned to him. (AUDIO: Regeneration Impossible) After the Monk invasion, the Twelfth Doctor needed to know if his companion, Bill Potts, was under the control of the Monks and deceived her into shooting him in a rage to see if she had succumbed to the mind control, secretly putting blanks in all the guns, and faking his regeneration to complete the illusion. He made it look like the process had started, but emerged as himself to show her that he had deceived her. (TV: The Lie of the Land)

When making his case for entering the dimension of the Eaters of Light to prevent them breaking through an inter-dimensional temporal rift, the Twelfth Doctor noted that he would regenerate if the light-eating locusts killed him. (TV: The Eaters of Light) After the Twelfth Doctor was captured by and  on a Mondasian colony ship, they debated throwing him off a hospital roof to kill him, but decided against it when they realised their uncertainty on how many regenerations he had remaining, believing they "could [be] up and down the stairs all night." (TV: The Doctor Falls)

A new body
After the Twelfth Doctor was gravely wounded by the Cybermen on the Mondasian colony ship, the regenerative process began. However, tired of "being someone else", the Doctor delayed the change for two weeks (TV: The Doctor Falls) until an encounter with his first incarnation, Archibald Hamish Lethbridge-Stewart and the Testimony caused him to concede that another regeneration would not "kill anyone". After taking a final look at the universe and providing advice to his next incarnation, the Twelfth Doctor regenerated inside his TARDIS in an explosive fashion. (TV: Twice Upon a Time)

As they regenerated, the Doctor relived memories from each of their past lives while the Twelfth Doctor continued to give advice, recalling the magnificence of their TARDIS, (COMIC: The Many Lives of Doctor Who) Ian and Barbara, (COMIC: The Path of Skulls) the strangeness of some of their adventures, (COMIC: Card Conundrum) their love for London (COMIC: Invasion of the Scorpion Men) and for parts of Earth outside the UK, such as New York City. (COMIC: Time Lady of Means) With the new incarnation becoming a certainty instead of a possibility, her actualised potential sent postcards to various friends as a "hello to the world", including V. M. McCrimmon and Grandfather Halfling in the City of the Saved (PROSE: Postscript) and Alistair Gordon Lethbridge-Stewart during his later years. (PROSE: When Times Change...)

As they continued the recollections, the Doctor settled into their new body. (COMIC: The Many Lives of Doctor Who) They next remembered Gallifrey and the regeneration limit, (COMIC: Ophiuchus) how the Sixth Doctor saved the Triumvirs from the Haxeen, (COMIC: Virtually Indestructible) the Master, (COMIC: Crossing the Rubicon) how things were not always as they appeared (COMIC: The Time Ball) and the Last Great Time War. (COMIC: The Whole Thing's Bananas)

As the regeneration finished, the Doctor noticed that her clothes no longer fitted and felt "there was something different about this body". (PROSE: Twice Upon a Time) After the Twelfth Doctor's ring fell off her finger, (TV: Twice Upon a Time) the Doctor remembered how the Ninth Doctor had to relearn to be "the Doctor" after the Time War, (COMIC: Return of the Volsci) how the Tenth Doctor helped Elizabeth Garrett Anderson become the first female doctor in England, (COMIC: Nurse Who?) her wife River Song, (COMIC: Without a Paddle) the Daleks and how they were a constant threat throughout her life, how she lost Bill Potts to the Cybermen, and, finally, how her predecessor was critically injured in the Battle of Floor 0507, which led to the regeneration she was now finishing. (COMIC: Harvest of the Daleks)

Post-regeneration
Still hearing her predecessor in her head, who told her he was finally ready to let go, (COMIC: The Many Lives of Doctor Who) the Doctor staggered to the console to examine her reflection and saw her new face, a change she felt was "brilliant". Before she could do more than press a button on the control console, the TARDIS suddenly spiralled into chaos, with the Doctor being thrown out as the time rotor exploded from the damage caused by the explosive regeneration. (TV: Twice Upon a Time) As she fell towards 2018 Sheffield, (TV: The Woman Who Fell to Earth) the TARDIS vanished (TV: Twice Upon a Time) and she manoeuvred herself to fall into a train to soften her landing, knowing she would survive due to her regeneration energy still being active. (PROSE: Things She Thought While Falling) Unfortunately, this caused her to accidentally lose the sonic screwdriver and sonic sunglasses. (TV: The Woman Who Fell to Earth)

Crashing through the ceiling of the train as it was being besieged by an alien energy coil, the Doctor saved Karl Wright and Graham and Grace O'Brien from the creature by forcing it to retreat and took charge of the situation when PC Yasmin Khan showed up with Grace's grandson, Ryan Sinclair. Waking up in Graham and Grace's house, the Doctor found that she and her new friends had had DNA bombs implanted in them, and she tracked the signal to a Stenza transport pod before confronting the Stenza warrior, Tzim-Sha, who had arrived in Sheffield to hunt Karl as a rite of passage. The Doctor was able to trick Tzim-Sha into activating the DNA bombs that had been downloaded into him and he was forced to retreat, but Grace was killed while trying to overload the coil creature. After Grace's funeral, the Doctor went to a charity shop with Ryan and Yaz and chose a new outfit before rigging up Tzim-Sha's transport pod to find the TARDIS, accidentally bringing Graham, Yaz and Ryan with her. (TV: The Woman Who Fell to Earth)

Winding up on a spaceship crash landing on the planet known only as Desolation, the Doctor and her companions accompanied a duo of space racers, Epzo and Angstrom, while they finished the Rally of the Twelve Galaxies. (TV: The Ghost Monument) While on Desolation, the Doctor overlooked the ocean as she considered her uncertainty about her future, knowing only that it would be "amazing". (COMIC: The Many Lives of Doctor Who) The Doctor uncovered a sabotaged science experiment conducted by a race subjugated by the Stenza, who had forced them to create weapons that eventually poisoned the planet and reduced it to a barren wasteland. Cornered by their Remnants, who attempted to read her mind, the Doctor destroyed them by igniting the gas in the air. After the space racers left the planet, having decided to end the race with a draw, the TARDIS returned to the Doctor with a redecorated interior, and the Doctor made to return Graham, Yaz and Ryan to their home. (TV: The Ghost Monument)

Returning to Sheffield
The Doctor had trouble controlling the TARDIS, telling her companions that it was because the ship sometimes had a mind of its own, and made thirteen accidental stops along the way.

On the fourteenth attempt, the TARDIS landed in Montgomery on 30 November, 1955. After Ryan was assaulted due to his skin colour, the Doctor was spared from having to interfere when Rosa Parks stepped up to alleviate the situation. When it was revealed that Rosa had been exposed to artron energy, and with the Montgomery Bus Boycott just a day away, the Doctor discovered that a mass murderer from the far future named Krasko was attempting to prevent the boycott in the hope that doing so would prevent equality, but he could not harm anyone due to a neural restrictor in his brain. Outdoing Krasko, the Doctor and friends were able to keep history on track, albeit by becoming part of the events, and ensured Rosa was arrested after refusing to follow James Blake's order to move seats for Graham to sit on the bus. (TV: Rosa)

When Yaz was having her "time of the month", the Doctor took her to the TARDIS Hungarian bathroom and told her of the time she met Amelia Earhart in her eleventh incarnation. (PROSE: Chasing the Dawn)

The Doctor eventually got the TARDIS to Sheffield, but decided to stick around for tea with Yaz's family, in the course of which she found that the Khans' neighbour had been killed by a giant spider. When Graham arrived claiming to have found another giant spider in his house, the Doctor found that a Robertson Luxury Hotels hotel was at the epicentre of the spider sightings due to it being built on an old mine filled with waste disposed by Jack Robertson's disposal company that caused them to mutate. The group trapped the brood of spiders in Robertson's panic room, though Robertson killed the spider mother even though it was already dying.

Later that night, Yaz, Ryan and Graham chose to continue travelling in the TARDIS; the trio accepted the risks, pulling the dematerialisation lever together to continue their journeys as Team TARDIS. (TV: Arachnids in the UK)

Early travels as Team TARDIS
The Doctor took her friends to a singing waterfall made of pink crystals, a unicorn sanctuary on a lost moon, the Big Bang (PROSE: The Good Doctor) and the upward tropics of Kinstarno for rain bathing. (TV: The Tsuranga Conundrum) After Team TARDIS encountered the Death Eye Turtle Army, the Doctor found herself having to "profusely" apologise to Graham for taking a risk he disagreed with. (TV: Demons of the Punjab) They also visited the Great Kalisperon Bike-Off. (TV: Spyfall)

The Doctor and her friends went to see Elizabeth II's coronation in 1953, where the Doctor photobombed the picture of the royal family on the balcony of Buckingham Palace. She then saw that Eva De Ville, who had been sent to assassinate her, was leaving the scene, but her attempt to interfere resulted in Queen Elizabeth being taken by De Ville by mistake. Tracking De Ville, the Doctor landed the TARDIS on the Phasmatodea Cartel representative who hired De Ville and was able to retrieve the Queen. (COMIC: Where's the Doctor?)

Hoping to stock up on spare parts for the TARDIS, the Doctor went to a junk galaxy to scavenge, where Graham accidentally set off a sonic mine that knocked Team TARDIS unconscious for four days. Fortunately, the Tsuranga medical ship brought them on board for treatment. However, the Doctor found out that the rescue craft was on a preprogramed route and could not take them back to the TARDIS until docking at Resus One. As the Doctor tried to find a way to get back, a Pting managed to get aboard the ship and began eating it. The Doctor stunned the Pting by making it eat a device that overloaded it with energy and ejected it into space. (TV: The Tsuranga Conundrum)

At Yaz's urging, the Doctor took Team TARDIS to 1947 during the Partition of India, so Yaz could learn more about the life her grandmother, Umbreen, before she moved to Sheffield. Meeting Umbreen and her fiancé, Prem, who Yaz had no knowledge of, the Doctor discovered Thijarians near the body of a deceased holy man and assumed they were responsible for his death. However, the Thijarians revealed that they now take the role of witnesses to watch over the dying and that Prem was destined to die during the Partition. Knowing history had to play out, the Doctor officiated the marriage of Prem and Umbreen in the place of the holy man, before Prem was killed on the orders of his brother, Manish, for marrying a woman of a different religion. (TV: Demons of the Punjab)

During a visit to see Albert Einstein in 1905 Switzerland, Team TARDIS found that the children of Bern had fallen ill, and that giant spiders and rats were roaming the streets. When the Doctor used the ultraviolet setting on her sonic screwdriver, she found that alien starfishes were feeding off the children's imagination and creating the psychic manifestations. The Doctor tried to trap the starfishes by using Einstein as a lure, but his imagination overloaded the aliens into creating dark visions until Mileva Einstein was able to calm his mind. With the starfishes secure, Team TARDIS departed Bern to take them somewhere safe. (PROSE: Einstein and the Doctor)

While travelling in the Time Vortex, the TARDIS was boarded by a Kerb!am Man to deliver a fez, but Yaz found a message begging for help on the packing slip. The Doctor took the team to Kerb!am to find the source and began investigating the mysterious disappearances of workers. The Doctor eventually determined that the Kerb!am AI itself had sent the distress call in response to the disappearances. Shortly after making this revelation, Ryan deduced that Charlie Duffy, a maintenance worker, was behind them, and Charlie revealed his plan to have an army of Kerb!am Men deliver packages with bombs in the bubble wrap to kill customers and prevent automation from completely replacing a human workforce. The Doctor was able to reprogram the robots to open their own packages and detonate the explosives within, destroying the army and killing Charlie when he refused to escape with the Doctor. (TV: Kerblam!)

Attempting to see the coronation of Elizabeth I, the TARDIS instead brought the group to Bilehurst Cragg in the 17th century, where the Doctor interfered in a witch trial, though she failed to save the accused, Mother Twiston, from drowning. Disgusted at the callousness of the landowner, Becka Savage, the Doctor tried to stop her, but the arrival of King James I forced them to investigate elsewhere. The Doctor, Yaz and Becka's cousin Willa Twiston investigated Old Mother Twiston's grave and saw her rise as a Morax just as the Doctor was accused of being a witch, and she quickly discovered that Becka was infected by the Morax Queen who wanted to resurrect the Morax King. However, the Doctor was able to reactivate the prison to suck the Morax back in, but King James killed the Queen, forcing him to promise to end the witch trials and have the events in Bilehurst Cragg be struck from the history books. (TV: The Witchfinders)

Team TARDIS next arrived at a pizza parlour in New Port City, where they discovered the body of Iz. The Doctor and Graham investigated Iz's local Grey Zone Mall, but found that the posh dress she was wearing wasn't sold there. The Doctor attempted to find the teleportation coordinates to the Black Zone Mall, but instead, Graham and the Doctor found themselves outside the city next to the teleportation system's core. Needing to bypass the core's teleportation block, they returned to the pizza parlour and used spray cheese to provide a forcefield while Graham drove a moped to the core. The Doctor and Graham rescued Ryan and Yaz from having their sperantium harvested, as the city's dictatorial mayor, Ronan Sumners was accidentally ported into a Pizza-Porter oven. (PROSE: Gatecrashers)

On a whistle-stop tour of the Seven Wonders of the Universe, Team TARDIS arrived in the Jewelled City of Glude to find it a burning wreck, before witnessing the destruction of the Twelve Moons of Dhost by missile. The Doctor tracked the source of the destruction back to a film director in Follyrood, who had filmed the destruction for use in a movie starring Errol Flynn. The Doctor unleashed a box of data bugs, who lived on Dhost, that destroyed the director's film equipment and put an end to his destruction spree, and his career. (COMIC: The Greatest Movie Never Made)

The Doctor and her companions travelled to the planet Gatan, arriving in the City of Radiant Stone in the midst of war. The Doctor was caught in the crossfire between two enemy warriors named Tumat and Kraytos who had been fighting for months, causing the destruction of the entire city. With Berakka Dogbolter profiting off of their fighting, the Doctor helped lure them onto a teleport pad and forced them to re-emerge in the same place as one combined being. With the new Chimera stopping the war, the Doctor shut down Berakka's network and bade farewell to them. (COMIC: The Warmonger)

Team TARDIS becomes a family
After halting a war on the planet Lobos between the Loba and the human colonists, the Doctor and her companions departed in the TARDIS. When they attempted to return to retrieve Ryan's mobile phone, the TARDIS slipped almost six-hundred-years into the future, where the planet was now ruled by human zealots, served by slave Loba, whose religion was largely based on a misinterpreted joke made by Graham, who was worshipped by them as "the Good Doctor". First relegated to the background and having to do things through Graham's authority, the Doctor came into conflict with the ruling Temple of Tordos, and had to fight an artificially enhanced Loba named Tromos to the death. In the end, the Doctor succeeded in uncovering the lie of the zealots, setting the record straight and brokering a lasting peace between humans and Loba. (PROSE: The Good Doctor)

When the TARDIS landed in 2018 Norway, Team TARDIS found Hanne, a blind girl left to fend for herself in a boarded-up house with a monster seemingly hiding in the woods outside. While trying to help Hanne find the monster, the Doctor discovered a mirror leading to another plane of existence, and she found Hanne's father Erik living with his supposedly deceased wife and what appeared to be Grace, upon which the Doctor realised that her grandmother's old bedtime stories about the Solitract were real and that she had discovered the living universe. The Doctor tried to convince Graham and Erik to leave, but both men initially refused to lose their wives again. The Doctor eventually convinced the Solitract into releasing everyone else by offering herself, and the Solitract explained that it only wanted company. The Doctor convinced the Solitract that its existence was threatened by objects foreign to its universe, including her, and it reluctantly let her go. (TV: It Takes You Away)

After the TARDIS passed through an energy anomaly, it landed in 451 AD Gaul, where Graham and Ryan were separated from the others during an attack, and the Doctor and Yaz were "captured" by Attila the Hun to serve as his new "combat witches" against the power of the mysterious Tenctrama. The Doctor eventually determined that the Tencrama were survivors of a catastrophe on a distant planet who now sought to gain power from the psychic energies generated by the deaths in the wars they were escalating on Earth. The Doctor realised that the Tenctrama's process depended on them having spent the last thousand years subtly "engineering" humanity to be suitable energy sources for them, with the result that the Tenctrama would be contaminated if they absorbed anyone who had been treated with healing technology, such as a healing gel the Doctor had used. The Tenctrama were caught by surprise when they absorbed a horse that the Doctor had healed, the disruption giving the Doctor time to reconfigure their equipment and project the Tenctrama energy into Earth. (PROSE: Combat Magicks)

The Doctor and her friends visited Adamantine, where the entire civilisation lived inside the hollowed shell underneath the planet's exterior, and befriended Ash, one of the native silicon-based life forms, and the daughter of the planet's first scientist, Basalt. The Doctor soon determined that the civilisation was under threat as the exterior of the planet began to crack and let in water which threatened to cool the lava that Basalt's people needed to survive. While Graham and Yaz tried to calm the people, the Doctor and Ryan travelled up to the surface with Ash, learning that the cracks were caused by a mining expedition that had been abandoned after the original team was killed by an exploding gas pocket while leaving their equipment running. The Doctor was able to contact the original company and obtain the necessary command codes to shut down the equipment and use it to repair the worst of the damage threatening Basalt's home city. (PROSE: Molten Heart)

When the TARDIS picked up nine separate distress signals from planet Ranskoor Av Kolos in 5425, the Doctor went to investigate, where she found Greston Paltraki alone in his ship just as Tzim-Sha contacted him, demanding he give back the package he stole in return for his crew's safety. The Doctor had Paltraki led her and her companions to Tzim-Sha's base for a prisoner exchange. Arriving at Tzim-Sha's "edifice", the Doctor took the package directly to Tzim-Sha and learned that he had fooled the Ux into seeing him as their god, at which point he was healed and created a weapon that could miniaturise planets to take revenge on them opposing the Stenza. However, the Doctor and Yaz were able to get the Ux to see their mistake and return the planets to their original places, with Graham and Ryan choosing to trap Tzim-Sha inside one of his own trophy cases instead of killing him, with the Ux sealing the edifice to ensure no-one would be able to free him. (TV: The Battle of Ranskoor Av Kolos)

Investigating the Catastrophia
Attempting to reach the Ninth Moon of Quezzeltrax, the TARDIS instead landed in 1601 Bohemia, where the Doctor, Graham, Ryan and Yaz joined Tycho Brahe and Johannes Kepler at a gathering of scientists laid out by Baroness Dagmar Ruskovitch, where the Doctor and Ryan were psychically attacked by a monk named Dominik and she was later attacked by energy and left paralysed, continually muttering nonsense. After recovering, the Doctor learnt that Ruskovitch was trying to prevent the summoning of a twisted figure in the castle's cavern, just as it fully manifested in the form of the Doctor herself. With Ruskovitch revealing herself and Dominik to be Knights of the Solitary Sword, who were dedicated to protecting the universe from the Catastrophia, the Doctor and Ruskovitch teamed up to seal its Herald away again, at the cost of Brahe's life. (COMIC: Herald of Madness)

On Acantha, the Doctor and her companions discovered a collapsed mine and were caught in a mag-storm, becoming separated from Ryan. Rescued by a team of Mobox, they were taken to a nearby colony where the Doctor got an audience with Governor K'Lass. K'Lass showed the Doctor his human assistant, Rodney, and eventually got him to confess he thought something was wrong about the mine collapse. They discovered an underground area where humans had collected 600 Mobox under the covers of the mine collapse to harness their power, which Rodney revealed he was part of, including creating the mag-storms. The Doctor disabled the captive Mobox's restraints and lowered the gravity around the colony to prevent conflict, enabling the peaceful arrest of Rodney and his co-conspirators. (COMIC: The Power of the Mobox)

The Doctor next attempted to rescue a worker during a power plant meltdown on Segonus IV but he refused her help due to Berakka Dogbolter's control of the media branding the Doctor as a terrorist. As the Doctor confronted Berakka, a "child of chaos" named Krizanthia Kalos interrupted them to kill Berakka in the Doctor's honour, leaving everyone teleported away in the confusion. Krizanthia used the Eye of M'Dulia to open a portal to the Catastrophia, and with Graham and Berakka safe in a logic cube, the Doctor learnt that the Herald was actually a possible future version of herself, as was its opposite, the Sanity. It wanted to use the Herald to break the Catastrophia into normal reality, destroying it, but a combination of the three selves left only the Doctor. She, Graham and Berakka were rescued by a mysterious woman called Mother G flying the TARDIS along with Yaz and Ryan, and although Berakka still believed the Doctor was a monster, her friends showed her Sharon Allen's more accurate coverage of her actions on a rival news feed. (COMIC: Mistress of Chaos)

Holiday travels
While on an unnamed planet, the Doctor received a phone call from Santa Claus, telling her he needed her help with an emergency. She headed straight to Lapland to meet with him. Upon her arrival, Santa told the Doctor that his sleigh had lost its magical flying power. The Doctor lent him her TARDIS to substitute the sleigh, on the condition that he return it once he was finished. (WC:  'Twas the Night Before Christmas)

After enjoying nineteen New Year's celebrations, Team TARDIS was alerted to strange signals coming from Sheffield, (TV: Resolution) kicking off the Recon Scout Incident. (PROSE: Dalek Combat Training Manual) Meeting two researchers named Mitch and Lin at an archaeological site in the sewers, the Doctor obtained alien DNA before heading back to Graham's house, where Team TARDIS found Ryan's absent father, Aaron, had arrived to reconnect with his son. After Ryan left to hear his dad out, the Doctor found that the DNA belonged to a Dalek that had been buried on Earth since the 9th century and was controlling Lin. The Doctor, Yaz, Ryan, and Mitch tracked Lin to a warehouse, where the Dalek had constructed a new casing from scrap, and the whole group tracked it to the Government Communications Headquarters, where they melted its casing with Aaron's microwave oven. The victory was short-lived when the Kaled mutant inside took control of Aaron's body, forcing the Doctor to take it back to Skaro. However, the Doctor opened the TARDIS doors into a supernova, removing it from Aaron. (TV: Resolution)

Going everywhere
Stopping to watch the sentient nebulae on Blecplam Two and a Half in 3912, the Doctor and her friends encountered a rip in time that the Doctor recognised as the same anomaly she had encountered before, in her tenth and twelfth incarnations. As a hand emerged from within the anomaly, the rip vanished as before, but the Doctor was able to track it down again to an unnamed planet, where they successfully saved the trapped man, Dr Leon Perkins, before being imprisoned by the Grand Army of the Just. While imprisoned, Perkins explained that he had become stuck in a time-loop when he and his superior, Dr Irene Schulz, activated the prototypes of their prototype vortex manipulators, only for his to malfunction.

Team TARDIS escaped with Perkins back to the TARDIS, however Perkins attempted to hijack the ship at gunpoint; an attempt which the Doctor pointed out was pointless as the TARDIS had neutralised his weapon. The Doctor quizzed Perkins over a pot of tea, with him explaining that he and Schulz had been forced by "the Hoarder" to use their experimental time travel to steal treasures from across the universe, as well as kidnap children to act as hostages, with Schulz was injected with a toxic substance as punishment for disobedience. The Doctor, her friends and Perkins found Schulz on the Hoarder's planet. Using ingredients Schulz had already gathered, the Doctor created an antidote for Schulz’s condition. Whilst Perkins and Schulz confronted the Hoarder, Team TARDIS freed the hostages and tipped off the Time Agency to the Hoarder's activities. After the Hoarder trapped himself in a time loop by trying to escape using Perkins' faulty vortex manipulator, Team TARDIS parted ways with Perkins and Schulz, assured that they would work to get the children and the treasures back to their rightful places. (COMIC: A New Beginning)

When Ryan and Graham suggested throwing a surprise birthday party for Yaz, the Doctor went to look for a cake, balloons, and birthday candles. She bought a Sontaran Frosted Boom Cake at a bakery on Sontar, obtained some Zeppelins for balloons from London during the Blitz, and took a candled Candelabra in Paris. When the party began, the cake exploded and covered Team TARDIS in pink chocolate, but Yaz was happy nonetheless. (PROSE: Dr. Thirteenth)

Arriving in Guelder in the early 16th century, the Doctor was surprised when her companions revealed the knowledge they had gained of the Guelders Wars from a historical podcast hosted by Bethany Brunwine called Hidden Human History. Exploring, Team TARDIS encountered a horde of Stilean flesh eaters, an alien species that were able to gradually take on the traits of different lifeforms after consuming their blood, one of which took a bite out of the Doctor. Tracking the Stilean flesh eaters to North Carolina in 1711 during Cary's rebellion, and to Canada in the 1860s during the Battle of Ridgeway, the Doctor noticed that the creatures were gradually becoming more human the more they fed, just as Dr. Perkins and Dr. Schulz arrived, both having joined the Time Agency since their last encounter with the Doctor.

As they continued to track the creatures, the crew became aware that they were continually visiting times and places that had been covered in Hidden Human History. To learn how the podcast was connected to their recent travels, Team TARDIS paid a visit to Bethany Brunwine at her home in 2019 London, where they discovered that she was the Stilean flesh eater that had bitten the Doctor upon their first encounter. Bethany revealed that consuming the Doctor's blood had slowed her ageing, allowing her to live on Earth among humans for centuries, and that the podcast had been inspired by her encounters with the Doctor in the past. After ending their visit with Bethany, Yaz questioned if the Doctor would give Hidden Human History a listen, to which the Doctor agreed, believing it would be rude not to, considering "[she] helped it happen". (COMIC: Hidden Human History)

Wanting to deal with "unfinished business", the Doctor returned to Gladstone's warehouse to find the escaped alien prisoner her twelfth incarnation had investigated with Harry Houdini. After Houdini and his wife were captured by Wiseman King, the escaped alien prisoner revealed itself to be Houdini's assistant Billy and explained that he had passed between the various magicians for many years while a control ring linked to his prison pod kept him imprisoned. With Billy's assistance, Team TARDIS was able to rescue Houdini and his wife from King. (PROSE: Who-Dini?)

Going to meet with Pythagoras in 500 BC Crotone to return his sunglasses, Team TARDIS found that his daughter, Myia, had been possessed by Zaris of the Argomeld, a race that grew from microbial size by transferring across host bodies. When the Doctor realised that Zaris would destroy Myia and the surrounding area when it jumped to its home dimension, she offered to help Zaris leave safely by using Pythagoras's mathematical tetractys sequence. Once Zaris had returned home, the Doctor made to return the sunglasses, only for Pythagoras to reveal that they weren't his. (PROSE: The Pythagoras Problem)

The Doctor then took her friends to Paramount Studios in 1961 to return the sunglasses to Audrey Hepburn while she was filming Breakfast at Tiffany's. As she returned the sunglasses, the Doctor discovered that PhiLit of the KaaDok, a race obsessed with Earth's media transmissions, had come to scan Audrey's brainwaves for a wax-droid in her likeness made by his supervisor, AaRee. However, after she and Audrey were teleported aboard AaRee's ship, the Doctor learnt that AaRee had dumped faulty androids on Earth, and also employed child labour, and deposed him, leaving PhiLit in charge after reporting AaRee to KaaDok Major's authorities. (PROSE: Mission of the KaaDok)

Solo endeavors
While Graham, Yaz and Ryan were elsewhere, (PROSE: The Runaway TARDIS) the Doctor thought about the lesson the Moment had wanted to impart on the War Doctor while sitting on a bench in Henry VIII's third-favourite garden. The Moment then joined her on the bench, and when the Doctor asked her why she had helped him the day he saved Gallifrey, the Moment said it was because she did not want to be used. (PROSE: The Day of the Doctor)

A girl called Lizzie snuck into the TARDIS whilst the Doctor was out and accidentally dropped her peanut butter sandwich down the console. As a result when she returned the TARDIS could no longer be navigated properly. After exploring the time and space using the randomiser, they wound up on the planet Plorp, and had Glorp head into the console to remove it. This allowed the Doctor to navigate the TARDIS once more and take Lizzie back home. (PROSE: The Runaway TARDIS)

The Doctor offered to babysit a young Judoon refugee from a "big fight" on a world far from Earth, but was prevented from doing so by other Judoon. She went to 1966 Dublin after the young Judoon landed there, but found it was already in the care of Patricia. After the Judoon returned to its people, the Doctor gave a few encouraging words to Patricia. (PROSE: The Rhino of Twenty-Three Strand Street)

Further travels with Team TARDIS
Whilst visiting Devivian, the Doctor was arrested for the theft of the Gem of Niag due to the culprit having two hearts. The Doctor escaped and traced a TARDIS that had been on the planet recently, suspecting the culprit to be be from the authorities' description. However upon tracing the thief's TARDIS, Team TARDIS discovered the culprit was the Sixth Corsair. After they escaped a pub brawl, the Corsair invited the Doctor to help on a heist which the Doctor accepted, after taking a moment to reflect on her foreknowledge of the Corsair's eventual fate. They rescued a star whale from Raddplina, however the Corsair abandoned the Doctor's companions when authorities arrived. Despite the Doctor's anger, the Corsair insisted they deliver the whale to her employer first, who the Doctor was horrified to discover was the Hoarder. The Hoarder had them imprisoned; however, after having a proper talk in a cage, they escaped and returned to Raddplina for Doctor's friends. The Doctor then contacted Perkins and Schulz to arrest the Hoarder and parted ways with the Corsair, advising her to find some friends to travel with. (COMIC: Old Friends)

Alone time
The Doctor took a Kid on a trip to do some challenges and learn about technology in the Universe. (GAME: Coding with the Thirteenth Doctor)

The Doctor dropped her companions off home so she could do some repairs to the TARDIS in Artron II Recharge Mode. Bored whilst the repairs were ongoing, she discovered an archive of her adventures that her granddaughter, Susan, had created and settled down to watch them. (PROSE: Press Play) The Doctor became an undercover assassin that served the King, known as the "Masked Assassin". After some time, the King decided he wanted the Doctor herself dead, but she ran across the hills and took cover behind a Dalek, until the "Masked Assassin" was contracted to kill the Doctor. The Doctor managed to convince the people to revolt against the King and use democracy instead. After she emptied out his slave mines, the Doctor confronted the King and revealed she was his assassin. As the people approached with pitchforks, all the guards fled, and the Doctor suggested the King think about exile. (PROSE: The Death List)

The Doctor posed as a museum curator in Venice. visited her to ask for the location of items that had been stolen from her in the 14th century, taking an old map from her and leaving, without realising that she had just spoken to the Doctor. Later, the Doctor saved Antonia from being left behind in 14th century Venice, returning her to the present. She left Antonia with a note chastising Missy for her actions and that she would have to "try harder next time". She then cleared out her office and told her assistant to tell anyone who asked, "the Doctor doesn't work here anymore." (PROSE: The Liar, the Glitch and the War Zone)

Whilst the Doctor was hiding from an army of Sontarans inside a wardrobe, the TARDIS detected "an upsurge in psychological signals" and the Doctor sent out an emergency transmission, giving five pieces of advice on what to do in a worrying situation to whomever received the transmission. (WC: Message from the Doctor) The Doctor contacted Bonnie and Petronella Osgood via text message, complaining about how she was stuck in a time eddy, trapping in her repetitive boredom. (WC: The Zygon Isolation)

When the Fourth Doctor used his TARDIS tuner to begin a temporal meta-collision with his other incarnations, the Thirteenth Doctor learnt that Earth was under threat from a pandimensional entity that had trapped her fourth incarnation in his TARDIS. While the Thirteenth Doctor argued with her other incarnations, the War Doctor used encoded messages from the Sixth Doctor to stop the invasion before it began, and the Sixth Doctor installed a way to expel the entity from the Fourth Doctor's TARDIS, ending the crisis. (WC: Doctors Assemble!)

Answering a distress call apparently from the Shadow Proclamation, the Doctor travelled to a mysterious moon that she discovered were parts of her TARDIS from alternate timelines, and that the TARDIS had sent the signal, brought together by Siblings Different and Sibling Same, who wanted revenge on the Doctor for their anomalous existence, caused when the Time War ended. Their plan was to use their patchwork TARDIS to undo the Time War, but it immediately starting falling apart upon activation, threatening the stability of the universe, but disaster was averted when Same sent his paradox energy into Different and returned the TARDIS pieces to their own timelines, killing himself in the process. (PROSE: The Paradox Moon)

Facing the Master
Whilst finishing repairs to the TARDIS in Sheffield, the Doctor was reunited with her friends by MI6 and brought to C who tasked her with investigating a series of bizarre attacks on spies across Earth. The Doctor contacted her old friend "O", and learnt that the attacks were linked to VOR CEO Daniel Barton and aliens from another dimension called the Kasaavin. When Team TARDIS and "O" went to confront Barton, he fled in his private jet, where, after Barton escaped, "O" revealed that he was actually and was also behind the attacks. As he left her and Team TARDIS in the crashing plane, the Doctor was taken by the Kasaavin, who transported her to their realm.

As she explored the area, the Doctor encountered Ada Lovelace, who seemed to naturally be able to enter the dimension. Arriving in 1834 London, she learned that the Master was following her and that his plan covered various time periods. Using the Silver Lady figurine Ada used to enter the Kasaavin's realm, the Doctor and Ada arrived in 1943 Paris, where they were rescued from the Master and the Nazis by Noor Inayat Khan. Contacting the Master with a psychic link, the Doctor arranged to meet him at the top of the Eiffel Tower, where she learned that the entire plan was to get her attention so the Master could tell her that Gallifrey had been destroyed. Leaving the Master to be arrested by Nazis after she had Noor frame him as a traitor, the Doctor stole his TARDIS and, with help from Ada and Noor, foiled the Kasaavin's plan, allowing them to take the Master back to their realm with them as they fled.

After returning Ada and Noor to their original time periods, the Doctor returned to Gallifrey, only to learn it had been ravaged and left in flaming ruins. In a hologram message left by the Master, she learned that it was his doing, as an act of revenge after learning about the Timeless Child and how the Time Lords' history had been built on a lie. The Doctor then travelled with Graham, Yaz and Ryan for some time in a weary mood, until they convinced her to open up about her past to them. (TV: Spyfall) The Doctor would occasionally return to her destroyed home planet, while also trying to find evidence of the Master escaping the Kasaavin. (TV: Fugitive of the Judoon)

Grieving for Gallifrey
After the Doctor accidentally interrupted the mating season of the Deep-Space Squids, Graham revealed he had been collecting coupons for a free holiday, which Team TARDIS was immediately transported to. Arriving at Tranquility Spa, the Doctor investigated strange happenings around the spa which the staff had withheld, discovering that the spa had been a "Fakation" built on an orphan planet. When an old lady named Vilma lost her partner Benni to the local Dregs, the Doctor insisted on them rescuing him, during which they found out that Orphan 55 was Earth in the future and the Dregs were mutated human survivors. Escaping back to the spa, she and the team tried to fight off the Dregs, but, ultimately, Team TARDIS had to escape by teleporting back to the TARDIS, leaving the friends shaken at the possible future. (TV: Orphan 55)

The Doctor tried to take her friends to 51st century New Asgard but instead arrived in Brideport in 1962. There they discovered the town was falling under the influence of a Piggybacker, which had possessed local teacher Edith Harcourt. Working with a family of aliens who had taken refuge from the Piggybackers in the town, the Doctor was able to combat its influence and convinced Abner Endicott to confront Edith, as he was the only resident of the town that Edith respected. As the Doctor had anticipated Abner was able to convince Edith to resist the Piggybacker, at the cost of her life. Team TARDIS attended her funeral two days later. (COMIC: The Piggybackers)

Whilst Team TARDIS was exploring Hong Kong in 1972, Yaz and Graham were kidnapped by men pursuing a woman named Tung-Mei and the Doctor and Ryan used her dropped pendant to track down Bruce Lee. Working with Bruce, the Doctor and Ryan learnt how local crime boss Chen Luo had accidentally exploited a tiny spaceship belonging to the Kalatra, with him raising his champion Shui Long to take control of Earth. The Doctor and Ryan argued over Bruce’s looming fate next year, with the Doctor reminding him history could not be changed. The trio were lured to a pier, where they reunited with Yaz and Graham, so Shui and Bruce could duel for the fate of the planet. Bruce ultimately prevailed after the Doctor advised him to move the fight to the shore, forcing the Kalatra to withdraw, taking Chen and Shui with them. Afterwards Team TARDIS spent some days in Bruce’s company before departing. (COMIC: The White Dragon)

The Doctor attempted to take Graham to have a kickabout with Bobby Moore during the West Ham F.C.'s glory days in 1964, however instead arrived in West Ham in 1896. There the Doctor and Team TARDIS discovered a Draconian using Thames Ironworks and Shipbuilding Company to build a dreadnought. Unable to persuade them to stop, the Doctor managed to convince the Draconian and company boss to allow the workers’ football team, the precursors to West Ham F.C, to train so they would be prepared for the 1896 Charity Cub Final, avoiding history being changed. (PROSE: The Simple Things)

Tracing strange signals to the early 1900s, the Doctor found Nikola Tesla and his assistant, Dorothy Skerrit, being pursued by strange phantom-like beings trying to capture Tesla. Having arrived in New York in the middle of a feud between Tesla and Thomas Edison, the Doctor investigated Tesla's pursuers and found them to alien scorpions known as the Skithra, who required Tesla to repair their stolen Venusian spaceship. Working with Tesla and Edison, the Doctor and her team fought the Skithra when they threatened to destroy Earth to get to Tesla, with the Doctor and Tesla using the TARDIS to electrify Wardenclyffe to force the Skithra into a retreat. (TV: Nikola Tesla's Night of Terror)

Confronting the past
While undertaking another search for the Master, the Doctor was interrupted by the arrival of the Judoon in Gloucester and discovered that they were hunting a fugitive. The Doctor, Ryan and Yaz entered the home of Lee and Ruth Clayton, finding that although they were both human, Lee was hiding something alien, so the Doctor and Ruth hid in Gloucester Cathedral. Later, the Doctor took Ruth to the abandoned lighthouse where she claimed to have grown up, and she regained her memories from a Chameleon Arch and revealed herself as another incarnation of the Doctor. The two Doctors were briefly captured by the Judoon but escaped and the Thirteenth Doctor was dropped off back in Gloucester, where she was found by Yaz and Ryan, who told her that they had met Captain Jack Harkness. Back in the TARDIS, Graham relayed Jack's message to the Doctor; "Beware the Lone Cyberman. Do not let it have what it wants." The TARDIS alarms then sounded, notifying her of alerts from three different locations, and Team TARDIS took off to investigate. (TV: Fugitive of the Judoon)

Dropping off Ryan in Peru and Yaz and Graham in Hong Kong, the Doctor travelled to a beach in Madagascar, where she found a naval officer in danger who exploded into dust after scales emerged all over his body. With Ryan uncovering similar, he and Gabriela Camara entered the TARDIS with Graham and Yaz, who had gained the company of Jake Willis and his sick husband, astronaut Adam Lang. The Doctor ventured back to Madagascar where she discovered that Adam had been infected with an alien pathogen. While working on an antidote, the Doctor discovered that Suki Cheng was behind it all and the team fled to the TARDIS so Adam could be healed. She tracked Suki to the bottom of the Indian Ocean, who explained about Praxeus before succumbing to it herself, leading the Doctor to disperse the antidote into the atmosphere. (TV: Praxeus)

After reflecting on her past whilst she and her companions were forced to isolate on Calapia due to them arriving during the passing of the Death Moon, (PROSE: The Shadow Passes) the Doctor decided to free the Daughter of Mine from her mirror prison and brought the girl to her home planet. (WC: The Shadow in the Mirror)

The Doctor travelled to Earth fifty years after the 22nd century Dalek invasion had ended to visit Susan, who was now a widow. She made her breakfast and invited her to take out her anger on the remains of a Dalek. (PROSE: Fellow Traveller)

As the Doctor stood in a fountain at the heart of the Villengard banana groves, the Moment appeared again to continue their conversation from a year ago. The Moment told her that she helped because the universe had a need for the Doctor, and, at that point, they were in danger of stopping. (PROSE: The Day of the Doctor)

While Androgar proclaimed that "all thirteen" of the Doctor's incarnations were present during the salvation of Gallifrey, (TV: The Day of the Doctor) the Twelfth Doctor admitted to the Eleventh General that he was unsure how many more versions of himself had actually arrived, only certain there were enough versions of himself and the TARDIS above Gallifrey to look like "a blizzard"; (PROSE: The Day of the Doctor) indeed, Gallifrey had once foreseen that every incarnation of the Doctor would unite above the planet, which would logically mean the Thirteenth Doctor was involved. (PROSE: Dalek Combat Training Manual)

Travelling to an earlier poit in the Last Great Time War, the Doctor gave a bandolier to Cass Fermazzi and learnt about the parts of her upbringing that encouraged her to fight, such as a robot clown that provided her with therapy. As she had previously realised, it was the same robot the Eleventh Doctor and River Song had repaired, confirming the Doctor's theories that they were inadvertently responsible for Cass's demise. Unable to save Cass because of how tied into her personal timeline she was, the Doctor watched her go. Reflecting on her meetings with the Moment, she was pleased that she finally had an answer as to why the weapon had helped her in her War incarnation. Deciding that her brooding and the "Day of the Doctor" were finally over, she went back to the TARDIS with a renewed vigour. (PROSE: The Day of the Doctor)

When the Fourth Doctor was trapped in the parallel dimension controlled by the Scratchman, the Thirteenth Doctor visited him to give him a reminder of what he stood for and what he had to be to encourage him to hold on to his true identity against the Scratchman's power. Once her fourth incarnation, Sarah Jane Smith and Harry Sullivan were back on Earth at a beach, the Thirteenth Doctor visited the Fourth Doctor to muse on how important it was that they never give up on being the Doctor. (PROSE: Scratchman)

Dealing with a paradox
Arriving in London in 1969, during the time period the Tenth Doctor and Martha were stranded there, the Doctor was intrigued as to why the TARDIS had brought them there. She sent her companions to keep an eye on her past self, wanting to avoid meeting him, and went to meet Martha at the shop she was working at. Attacks by Weeping Angels and Autons forced them to reunite and the Doctors reluctantly worked together to pit the two invaders against each other. The two Doctors parted, believing they had avoided creating a paradox, however upon taking her companions back to 2020 the Doctor discovered Earth was in ruins. (COMIC: A Little Help from My Friends)

In this new timeline, Team TARDIS explored London and discovered humanity had been enslaved by Sea Devils for decades. They were taken to a slave camp, encountering Peter and Jackie Tyler among the slaves, but were freed by an attack led by a Skithra Queen. Realising from her that the timeline had been altered in 1903, with the Skithra having now succeeded in kidnapping Nikola Tesla and Thomas Edison and then awakened the Sea Devils to conquer Earth on their behalf, the Doctor took her companions and the Queen back in time to right the timeline. Along the way, the TARDIS collided with a past version of itself belonging to the Tenth Doctor, who had also been embroiled in this paradoxical timeline and found an alternate version of Rose Tyler. The Doctors stabilised their TARDISes and he and Rose joined Team TARDIS in travelling back to 1903.

They met up with Dorothy Skerrit, who revealed both Tesla and Edison had disappeared. After the Queen and Rose killed the Skithra Drones who were about to awaken the Sea Devils, the Doctors took their team to the Skithra ship. Leaving her past self and companions to find the scientists, the Doctor and Queen went to sabotage the ship to destroy it. After doing so, they were attacked by the present Queen and the rebel Queen insisted the Doctor leave without her. The Doctor returned to the TARDIS as the Tenth Doctor and Fam were bringing the scientists aboard and revealed the Queen wasn’t coming, to her friends’ horror. She dropped Edison and Tesla off back on Earth after which the Tenth Doctor and Rose departed whilst she took her friends to the restored 2020. Whilst there she suddenly realised there was another flaw in the timelines and rapidly left, leaving her friends behind. (COMIC: Alternating Current)

She found the Tenth Doctor had been embroiled in the Kotturuh crisis and captured by the Restoration Empire on Skaro. She helped him escape and the two Doctors finally parted ways. (COMIC: Defender of the Daleks) Reuniting with her friends, the Doctor was greeted by the Sixth Corsair. (COMIC: Alternating Current)

Final adventures with Team TARDIS
After dropping Team TARDIS back in Sheffield to spend some time with their friends and family, the Doctor noticed an alarm from 1380 Aleppo, where she found a young woman named Tahira hiding from a Chagaska, just as she received complaints from her friends about strange events at home. Picking up her friends with Tahira in tow, the Doctor followed Graham's visions, which saw them travelling to a space platform in the far future where a geo orb was stuck between two planets in an everlasting extinction event with a woman trapped inside. The Doctor was confronted by the immortal Zellin, who revealed that he had set the trap for her to unlock his long-imprisoned partner, Rakaya, from the geo orb, but she lured them to Aleppo and trapped them both inside the geo orb with the Chagaska. Back in the TARDIS, the Doctor decided to take Team TARDIS to see the creation of Frankenstein as a distraction from the thought-provoking events. (TV: Can You Hear Me?)

Going to Lake Geneva in 1816 Switzerland, Team TARDIS were greeted at Villa Diodati by Lord Byron, Mary Shelley, Claire Clairmont, and John Polidori, but not Percy Shelley. As strange happenings persisted in the house, the occupants soon found themselves trapped in various areas of the house, until the Doctor worked out that they were being deceived by a perception filter. During this time, the occupants saw the arrival of Ashad - the "Lone Cyberman" - who was in search of the Cyberium, an AI which contained all the knowledge of all Cybermen. After finding Percy Shelley hiding in the cellar, the Doctor figured out that he was the Guardian Ashad sought, as he had found the Cyberium. The Doctor eventually took the Cyberium from Percy and gave it to Ashad, who then vanished. Team TARDIS then left to find and stop him from restabilising the Cyber-Empire in the far future, using coordinates Shelley had deciphered from the Cyberium. (TV: The Haunting of Villa Diodati)

The truth of the Timeless Child
After constructing various countermeasures to combat the Cybermen, Team TARDIS travelled to a refugee planet in the far future in the aftermath of the great Cyber-Wars, finding only a couple of human survivors left, but they were unable to protect them, so the Doctor told everyone to flee to the rescue ships while she caused a diversion. Stealing a Cyberfighter after briefly disabling Ashad, the Doctor, Ryan and Ethan hoped to meet the others at the Boundary. (TV: Ascension of the Cybermen) While experiencing visions of an Irish Gardaí, (TV: The Timeless Children) the group met Ko Sharmus, who led them to the Boundary, which opened to reveal a portal to Gallifrey, from which appeared. (TV: Ascension of the Cybermen)

Forced to accompany him to Gallifrey to prevent him killing her friends, the Doctor was placed in the Matrix by the Master, where she learnt that she was the Timeless Child, an entity who had the ability to regenerate indefinitely and whom the early Time Lords had experimented on and studied to gain the ability themselves. The Doctor managed to escape from the Matrix by overloading it with her memories, and was reunited with her friends, Ko Sharmus and the refugees. Together, they destroyed the Cybercarrier that had landed on Gallifrey and retreated to a vacant TARDIS, though the death particle remained inside Ashad after he was killed by the Master. The Doctor sent the humans back to the 21st century in the spare TARDIS while she confronted the Master, who had created a race of CyberMasters from the bodies of the Time Lords, and despite threatening to use the death particle on Gallifrey, Ko Sharmus did the task for her. The Doctor ran and stole another TARDIS before Ko Sharmus activated the particle, seemingly destroying the Master and the CyberMasters. (TV: The Timeless Children)

Imprisoned in the Maximum security facility
Returning to her own TARDIS, the Doctor voiced her intention to return to Sheffield to pick up her friends, but, while she was collecting her thoughts, a "Judoon Cold Case Unit" appeared and teleported her to a Maximum security facility in space, (TV: The Timeless Children) where she was charged with evading the Judoon, and seven-thousand other offences, and sentenced to life imprisonment. (TV: Revolution of the Daleks)

Reunions and farewells
After "a tough few decades" in prison, the Doctor was rescued by Jack Harkness and they escaped back to the TARDIS using Jack's vortex manipulator, with the Doctor trying to return to Team TARDIS shortly after they returned to Sheffield, only to arrive ten months later instead. They informed her of Jack Roberson being spotted with a Dalek, and the Doctor went to confront him with Graham and Ryan. When Robertson denied knowledge of building Daleks, he insisted that he was only making security drones run by artificial intelligence, so the Doctor brought him to the factory, which she learnt was a Dalek clone farm being run by a clone of the Reconnaissance Dalek. The new mutants were teleported into the new casings, beginning a takeover of England.

Out of options, the Doctor discreetly lured in the Death Squad Daleks to deal with them, only for Robertson to join forces with them after they had destroyed all the "impure" clones. The Doctor lured the Daleks into the spare TARDIS, which she programmed to fold in on itself and go into the Void, destroying them. Afterwards, Jack left to catch up with Gwen Cooper, and Ryan decided he wanted to stay in Sheffield, with Graham also deciding to remain with him, leaving only Yaz to travel with the Doctor. Though saddened by their departures, the Doctor was happy for them and gifted them their own psychic papers. (TV: Revolution of the Daleks)

Lone travels with Yaz
Fearing she may one day become trapped somewhere and need someone else to save the Earth in her absence, the Doctor compiled a book about her life and adventures to help someone protect the Earth without her. (PROSE: Meet the Fam) In her book, she included fact files on her latest adventures, (PROSE: Fact File) reviews of recent destinations she has visited, (PROSE: TARDIS Trip Reviewer) a tour of her TARDIS control room, (PROSE: TARDIS Tour) her own write up on legends of the Timeless Child, (PROSE: The Secret of the Timeless Child) and, after meeting up with River Song, an extract from the The Dark Times Times newspaper article about the Dark Times, written by River. (PROSE: The Guide to the Dark Times)

The Doctor made sure Yaz had the "experience of a lifetime" during their travels, having fun and seeing "amazing places" together. (TV: The Halloween Apocalypse) After an argument with a Silurian, a Judoon and a Hath, the Doctor and Yaz got trapped in a joke book, and had to work out what the oldest joke in the universe was to escape. (PROSE: Knock! Knock! Who's There?)

The duo became embroiled in a crisis where the Paradox Cloud spread across time and space. They visited London in the 2020s, Satellite Five in 199909, Regnidorch II, Manhattan 1932 and New New York Hospital. They discovered the cause was the Master's TARDIS being piloted by Kara as she tried to find a cure for her terminally ill daughter Kaibra. They were able to put a stop to it but failed to locate the Master. (GAME: Hidden Mysteries)

The Doctor took Yaz to 1605 only to discover history had been altered so the Gunpowder Plot was successful. Travelling to the night of the explosion, they witnessed Guy Fawkes being arrested and Berthold Schwarz take his place to cause the explosion. They failed to stop Schwarz lighting the gunpowder so fled and travelled back in time to meet his younger self. They discovered he inadvertently summoned an alien knight in an alchemy ritual and stole its gun, killing it. Yaz tried to interfere but was shot in the shoulder by Schwarz, so the Doctor got her back to the TARDIS and dealt with the wound. She explained to Yaz that the alien knight had used its dying breath to curse Schwarz to be immortal until being shot by the last gun on Earth. They travelled forward in time to find Schwarz in the ruins of Earth and he agreed to help them put history right. The Doctor took him back to the Gunpowder Plot where the older Schwarz convinced his younger self not to detonate the gunpowder, breaking the curse. (PROSE: Black Powder)

Whilst visiting the hanging gardens with Yaz, the Doctor went off to get them Kronkburgers, (WC: A Message from Yaz) but got distracted. While outmanoeuvring a Balderian warfleet in the TARDIS, the Doctor discovered that Yaz had sent her a voice message and replied to it with her own voice message, apologising for her absence and promising to return to Yaz soon. (WC: A Message from the Doctor)

The Doctor spent several months as a science teacher pushing a younger version of Ace into loving chemistry, as well as saving her from a threat. She subsequently erased her memory of their meeting. (PROSE: Chemistry)

After the TARDIS arrived in a forest, the Doctor stayed to fix the TARDIS console's biscuit dispenser whilst Yaz went to explore. The Doctor eventually followed, being disturbed to find women trapped within the nearby trees, and encountered a woman who had been saved from a ceremony by Yaz. Discovering Yaz had been used in her place and was now trapped within in a tree, the Doctor tried to persuade the locals that the practice was wrong and discovered the bard had been leading the ceremonies and telling them the victims were happy. Turning them against him, the Doctor discovered he had been exploiting forgotten technology from an Earth colony and used it to free Yaz and the previous victims of the ceremony. (COMIC: The Forest Bride)

Beginning of the crisis
The Doctor identified a surviving Division agent, Karvanista, and tracked him down, not telling Yaz her true reasons for wanting to find him. Karvanista trapped them and left them dangling over a sea of acid, telling them Earth's "final hours" were approaching before abandoning them. The pair managed to use his levitating trap to reach the TARDIS and set off in pursuit to Earth. As they were en route, Swarm made telepathic contact with the Doctor showing her his escape from Divison custody.

Tracing Karvanista to Liverpool, the Doctor and Yaz discovered he had abducted a human, Dan Lewis, and nearly fell victim to a trap he'd left behind which shrank Dan's entire house. Returning to the TARDIS, they briefly encountered Claire Brown, who claimed she'd met the Doctor before in her future, and then set off to Karvanista's ship. There the Doctor confronted Karvanista, disabling his ship and weapon, who refused to tell her anything about the Division and explained he'd only taken Dan as his allocated human to save from the Flux, with the rest of his species also en route to Earth to rescue all of humanity. Confused that she didn't know about the Flux, the Doctor repaired Karvanista's ship so he could show her more, however upon seeing Yaz had freed Dan and regaining his weapon he attacked them, forcing them to return to the TARDIS.

The Doctor tried to take the TARDIS to look at the Flux, but found the ship malfunctioning. She eventually forced it to land on the edge of Earth's solar system and witnessed the Flux approach. After she had another vision from Swarm, in which he revealed they'd fought many times before in lives she couldn't remember, the Flux suddenly turned to attack them. Unable to dematerialise, she piloted the TARDIS towards Earth and warned Karvanista that the Flux had arrived early, guiding his people's fleet to form a shell to protect Earth. With the Flux closing in on the TARDIS, the Doctor tried a final option of breaking the console to unleash vortex energy however it appeared to have no effect on the Flux. (TV: The Halloween Apocalypse)

Combatting the Sontarans
Falling through time due to the collision of vortex energy and the Flux, Doctor suddenly found herself, Dan and Yaz at a battlefield in the Crimean War, along with the TARDIS, and encountered Mary Seacole. They discovered Sontarans had invaded the conflict, supplanting Russian forces, however were separated when Dan and Yaz continued falling through time. Promising to find them, the Doctor went to the TARDIS only to find the doors missing so returned to Mary Seacole's British Hotel.

She was appalled to discover British forces were planning to face the Sontarans in battle, so arranged the release of a Sontaran prisoner to organise a parlay with their commander. The parlay failed due to British commander denying the Doctor's authority and having her taken away, resulting in the British forces being massacred. With the commander now willing to listen, the Doctor devised a plan to sabotage the Sontarans' supplies based on Mary's observations, also using their ship to communicate with Dan who was infiltrating an Imperial Sontaran Time Carrier in 2021 Liverpool. The plan worked, forcing the Sontarans to withdraw from the Crimean War, however to her horror as the ships were taking off the British commander used gunpowder to destroy them. The TARDIS returned to her and she managed to reach Dan in 2021, who had dealt with the Sontarans in Liverpool with the aid of Karvanista. (TV: War of the Sontarans)

Repairing the Temple of Atropos
Entrusting Earth's protection to Karvanista, she and Dan set off to find Yaz. The TARDIS was diverted to the Temple of Atropos on the planet Time, where they were greeted by Azure. She took them to the broken Mouri, where Swarm revealed their role in keeping time in check and that he'd subsituted Yaz and Inston-Vee Vinder for two of them. To the Doctor's horror, he prepared to expose them to the full force of time, wondering how long they'd last. (TV: War of the Sontarans) The Doctor pre-empted him by leaping onto the place of a broken Mouri herself, pulling Dan onto the other, and taking the flow of time upon herself to protect her friends. Hiding her friends within their time streams, she attempted to devise a solution with the surviving Mouri but found herself pulled into her own time stream, experiencing her younger self's original capture of Swarm and Azure at the Siege of Atropos.

Inspired by that event, the Doctor asked the Mouri to hide four new Mouri within the Passenger currently in the Temple so they could retake their positions and restore time to normal. They complied and prepared to send her back, despite her begging them to let her see more from her forgotten past. She suddenly found herself with a mysterious woman who explained the Flux and the two Ravagers had been released deliberately to destroy the universe, because of the Doctor, and advised her to stop trying to fight it. Back in the Temple Swarm congratulated the Doctor, but revealed that time had been broken long enough to release particles of the Time Force. He and Azure left triumphant so the Doctor and her friends returned to the TARDIS. (TV: Once, Upon Time)

Facing the Division
After dropping Vinder off on his ruined home planet, with a device to contact her if he needed to, (TV: Once, Upon Time) the Doctor sent out a distress call warning those who received it about the impeding arrival of the Flux along with the other species rallied to its cause. (TV: The Flux is Coming...) A little later, she recorded a message for Yaz in case they became separated, telling her the forces displaced by the Flux would likely converge on Earth so she should find warnings of a great battle to come. (TV: Survivors of the Flux) Then, a Weeping Angel appeared in the control room via Yaz's phone, seizing control of the TARDIS. (TV: Once, Upon Time)

Evicting the Angel from the TARDIS, the Doctor realised they had arrived at its intended destination which turned out to be Medderton in 1967. Whilst Yaz and Dan helped the locals search for a missing child, the Doctor followed mysterious readings on her sonic screwdriver to Eustacius Jericho's house, where she found Claire Brown. As Weeping Angels laid siege to the house, Claire revealed that an Angel was present in her mind. Making telepathic contact with Claire whilst Jericho held back the Angels, the Doctor spoke to the Angel which revealed it was on the run from the Division and had brought her here for her help to evade the Angels sent to retrieve it. Jericho awoke them as Angels closed in and they fled through a secret tunnel from his basement. The Doctor was shocked that the Angels stopped moving and emerged from the thnnel to find herself surrounded. Speaking through Claire, the rogue Angel revealed it had offered the Doctor to the Angels in its place and that she was recalled to the Division. The Doctor was transformed into a Weeping Angel herself and transported away. (TV: Village of the Angels)

The Angels transported the Doctor to Division Control outside the universe where she was reverted to normal by an Ood. She was taken before the leader of the Division, who revealed herself to be a new incarnation of Tecteun. Tecteun revealed the Division was destroying the universe and moving on to the next one, and tempted the Doctor to join them with a Chameleon Arch containing her erased memories. The Doctor refused and announced her intent to destroy the Divison, but was interrupted by the arrival of Swarm and Azure. The pair killed Tecteun and cornered the Doctor, promising to end her suffering. (TV: Survivors of the Flux) The Doctor attempted to escape back into the universe, but Swarm made contact with her at the precise moment she did. This caused her to be split into three aspects; one remained with Swarm and Azure who taunted her with her erased memories as they prepared the next Flux event; the second appeared in the Williamson Tunnels and was reunited with Yaz, Dan, Jericho and Kate Stewart who had her TARDIS; the third appeared onboard a Lupari ship above Earth with Karvanista and Bel. (TV: The Vanquishers)

Saving the universe
The Doctors near Earth learnt that the Sontarans had invaded again and both sought to investigate. The Doctor with her companions followed Kate Stewart's suggestion to plant agents in the Sontarans' experiments on human psychics, using her TARDIS to recruit Claire from 1967 at Jericho's request. The Doctor with Karvanista and Bel deliberately got them captured by the Sontarans to get information. Whilst being held with Karvanista, she asked him about their past and he confirmed he'd once been her companion. The imprisoned Doctor was interrogated by the Grand Serpent until the Doctor with her companions rescued her and Karvanista. Together the two Doctors discovered the Sontarans' plan to lure Daleks and Cybermen fleets to the Flux event, which they were learning the starting point of via the psychics, in hopes their combined matter would resolve the Flux. They also used the TARDIS to rescue Vinder and Diane from Swarm and Azure's Passenger. The two Doctors sabotaged the Sontarans' plan by helping Karvanista regain control of the Lupari fleet, after the Sontarans had stolen them, changing their formation so the Sontaran fleet perished with the Daleks and Cybermen, however this proved insufficent to stop the Flux. Following a suggestion by Diane, the Doctors summoned the Passenger whose endless matter proved sufficient.

The third Doctor was taken to the Temple of Atropos by Swarm and Azure, who planned to offer her to Time upon the Temple's destruction by the Flux. An embodiment of Time appeared before them and dismissed the Ravagers after revealing their Flux had failed. To her surprise Time left the Doctor alone, instead bringing her three aspects back together and giving her hints of her looming fate. The Doctor was then returned to the TARDIS, having recovered the Chameleon Arch from Swarm's remains. She subsequently left Bel and Vinder with Karvanista, returned Claire home and then invited Dan to continue travelling with her and Yaz. As Yaz showed Dan around, the Doctor placed the Chameleon Arch inside the console and asked the TARDIS to hide it from her, unless she really asked for it. (TV: The Vanquishers)

Final adventures
To unwind, the Doctor, Yaz and Dan went to see a pantomime of Cinderella, which took a turn for the adventurous after the Doctor tried something during the interval to make the show more exciting, only to accidentally summon real versions of various pantomime characters to the theater (having failed to understand the true nature of the "way to summon the magic of panto" that she'd read about on Spacebook). Though Yaz had to fight off the Crocodile from Peter Pan while Dan dueled Captain Hook, the Doctor was able to put things to right using one of the three wishes from a magic lamp, and things returned to normal, allowing the time travellers to witness the second half of the real show. (COMIC: It's Behind You!)

A week after saving the universe, the Doctor set about engaging the TARDIS's reset system for the first time ever, in order to remove the debris leftover from the Flux. She intended to have herself and her companions wait the process our on an alien beach, where she'd promised Yaz that she'd finally tell her all about what she'd been going through. However, they found themselves in ELF Storage, in Manchester, instead. She, Yaz and Dan encountered a Executioner Dalek who exterminated them, however they were resurrected when the TARDIS created a time loop. After numerous fatal attempts to evade the Daleks with two bystanders, Sarah and Nick, the Doctor devised a successful plan to destroy the Executioner Daleks using explosives stored in the facility, ending the loop entirely by fleeing the building. Afterwards she and her companions departed in the restored TARDIS, deciding on a whim to go look for the lost treasure of the Flor de la Mar. (TV: Eve of the Daleks)

The trio dressed up in period-appropriate clothing only to end up four hundred years out of date from their intended target, finding themselves in 1807 China where they thwarted a pirate Sea Devil's plan to use the Keystone to flood the entire Earth. Before Sin Ji-Hun laid down his life instead, the Doctor prepared to fulfill Time's prophecy by sacrificing herself to destroy the Sea Devil base, and just before she did so, she confessed to Yaz that if she were to allow herself to enter a relationship again, it would be with Yaz; however, after they made it out alive, she had a tender conversation with Yaz on a nearby beach where she apologetically told her that she could not bring herself to pursue such a relationship, even if the immediate threat had passed, because she knew that "sooner or later, it [would] hurt". (TV: Legend of the Sea Devils)

The trio investigated a series of disappearances in a town in 2022. Suspecting ghost tours at nearby Hydra Hall may be connected, the Doctor and Dan visited the owner, Vera Parker, whilst Yaz went to the hall. After Yaz reported seeing Roman legionaries at the hall, they hurried there and found her missing, leaving only her broken phone. The Doctor and Dan then suddenly found themselves transported back in time to earlier in the hall's history in 1942. Finding a link to an alien market in a pocket dimension where Yaz had been sold as a trinket, the Doctor located her but discovered she was already leading her fellow captives against them. The Doctor helped them reach a portal back to 2022, however was cornered by the alien sellers and closed the portal to stop them following Yaz. Finding the centre of market's pocket dimension, she created a time centrifuge to reopen all the portals and send the sellers back where they came from and then found a portal back to Dan and Yaz. (COMIC: Hydra's Gate)

Visiting the edge of reality with her friends to see if there was any life there, the Doctor became infected with a psychic virus that began steadily erasing people who'd known her, turning them into ghosts. (AUDIO: Salvation) The Doctor broadcast a message to Earth warning that something was coming and people she had known were being "redacted from reality". (AUDIO: Introducing Doctor Who: Redacted) She sent a letter to Abby McPhail saying she'd be in touch but couldn't do so directly as she might be contagious. (AUDIO: SOS) She later contacted the Black Archive, talking to Cleo Proctor. She tried to tell Cleo to find someone, but interference meant Cleo couldn't understand the message. (AUDIO: Recruits) The Doctor contacted Cleo specifically again via a radio, warning her not to touch the ghosts. (AUDIO: Requiem, Ghosts) The Doctor finally landed in the Powell Estate to find everyone had vanished bar Cleo. The two talked over the situation, with the Doctor revealing what had happened to Cleo's father, and deduced a solution to make the ghosts remember by broadcasting Cleo's podcast about the Doctor, restoring nearby ghosts to normal people. The Doctor had Cleo and her restored friends record an episode in the TARDIS which she broadcast around the world and on other planets to cure all the ghosts. Afterwards she set off to find her friends and deal with the threats that had capitalised on the situation. (AUDIO: Salvation)

The TARDIS team relaxed together on a beach. However, their peace was disrupted when Dan began to see accidents moments before they happened. The Doctor realised he had accidentally picked up her pair of Preventacles, banned glasses capable of seeing slightly into the future. (COMIC: Fear of the Future)

After finding a brochure in the TARDIS straight afterwards, the Doctor, Yaz and Dan investigated the Gardens of Everlasting Summer. There, the Doctor uncovered how the gardens' custodian, Jinpar, had been artificially rewinding time to keep the long-lived residents living in a perpetual state of summer. She convinced him to stop after Yaz was temporarily aged due to Jinpar's resulting time storm. (COMIC: The Everlasting Summer)

When a temporal crisis made itself known, the TARDIS made an emergency landing in the Third Doctor's UNIT HQ laboratory, with UNIT HQ having turned into a Waypoint teeming with vortex energy by its experience passing through a singularity into the anti-matter universe. The temporal disturbances were also having an effect on the Doctor herself, who didn't recognise the lab as anywhere she'd been before, even after Yaz found "John Smith"'s badge and frilly shirts. With K9 Mark IV's help, the two were able to charge up the TARDIS with vortex energy and make a quick hop to another location, where they met Sil, who sold them technology to help the TARDIS recharge faster using the unrefined vortex energy. After the Doctor briefly visited Atlantis to help defuse a situation with Sea Devils, they returned to the UNIT lab where the Doctor finally remembered the place and realised she was losing some of her symbiotic nuclei, causing her memory troubles. (GAME: Lost in Time)

Final battle with the Master
Answering a distress call from a Toraji Transport Network bullet train being hijacked, the Doctor found the CyberMasters kidnapping a Qurunx that she was unable to save from them, with Dan deciding the leave the TARDIS due to a near-death experience in the hijacking causing him to reevaluate his life. After returning Dan to Liverpool, a Dalek traitor contacted the Doctor with information that could help destroy the Daleks before an imminent incursion of Earth, just as the TARDIS tracked down the Qurunx to a cyber-conversion planet in 1916, where the Doctor and Yaz found the the Master's TARDIS keeping the Qurunx imprisoned to power the planet and were then chased off by the CyberMasters, with the Cyber-Leader taunting her on the Master's return. The Doctor was then summoned to UNIT by Kate, where she reunited with Tegan Jovanka and Ace, and told that the Master had defaced paintings and lured seismologists to Naples to kill them. Realising that Time's warnings were coming true, the Doctor secretly planted the Holo-Doctor onto Tegan, Ace and Yaz and then assisted UNIT in detaining the Master. She and Yaz went to meet the Dalek traitor in the Daleks' volcano base, only for it to be a trap set by the Dalek Commander to destroy the traitor and capture the Doctor to take her to the Winter Palace in 1916 where the Master, disguised as Rasputin, was waiting for her.

Using technology he had stolen from Gallifrey in conjunction with the power the Qurunx was feeding the metal planet, the Master imposed the Thirteenth Doctor's forced regeneration and hijacked the process to become her next incarnation. Crying out to Yaz as she regenerated, the Doctor passed on to the Edge of Existence within her mind where the Guardians of the Edge appeared to stop her "moving any further through". The Holo-Doctor worked with her companions to undo the forced regeneration, and Yaz and Vinder eventually returned the Master to the chamber to force him to degenerate back into the Thirteenth Doctor by harvesting the regeneration energy of the CyberMasters, while the Master was forced back into his old body.

Realising she needed "all hands on deck", the Doctor retrieved Ace and Graham from the Daleks' volcano base after they destroyed the Daleks, and Kate and Tegan from the UNIT HQ after they blew it up to destroy the Cybermen. After giving them and Yaz instructions on how to use the TARDIS to take the cyber-conversion planet from 1916 to 2022, the Doctor sent Vinder on his way by fixing his ship before she commandeered the Master's TARDIS to empower her own TARDIS, giving it the energy needed to freeze the erupting volcanoes into steel. She then released the Qurunx, telling it to destroy the cyber-conversion planet. However, the Master, his body failing him due to being too strained, then arrived and redirected the Qurunx so that the Doctor was struck by it's energy beam. As the Master was buried by rubble, Yaz carried the Doctor to the safety of the TARDIS, where she lost consciousness. (TV: The Power of the Doctor)

Death
Asleep for "a while", the Doctor awoke after Yaz had dropped everyone off at Croydon, but quickly realised she was about to regenerate. Though dismayed, the Doctor elected to treat Yaz to ice cream atop the TARDIS roof while drifting in Earth's orbit to comfort her, telling Yaz how she "loved being with [her]" and that she felt she "need[ed] to do [the] next bit alone", and dropped Yaz off by Dan and Graham on their way to a Companion Support Group meeting. Wanting to see "one last sunrise", the Doctor went to a cliff to take in the "blossomiest blossom". There she regenerated into her next incarnation, telling them "tag, you're it". (TV: The Power of the Doctor)

Undated events

 * At some point before 5 March 2005, the Thirteenth Doctor was photographed "running away from a giant frog in front of Buckingham Palace". (PROSE: Rose)
 * The Thirteenth Doctor visited the Regalis Sector and encountered the Sontaran Empire. (PROSE: A Soldier's Education)
 * The Thirteenth Doctor had an altercation with while he was in his "body jumping" incarnation. (AUDIO: I Am The Master)
 * The Thirteenth Doctor outwitted carnivorous chessmen on Proxima Ceti, defused a temporal anomaly bomb on a derelict space station and escaped from two-hundred evil cyborg clones of Harry Houdini in a subway in New York City in 1904. (PROSE: The Secret in Vault 13)
 * The Thirteenth Doctor visited the X-Particle Mines and helped the miners get in contact with particle miners from another dimension. She left a card for the Ninth Doctor, who arrived soon after. (PROSE: A Day to Yourselves)
 * The Thirteenth Doctor visited Leadworth in February 2020. As she was stepping inside the TARDIS, she encountered a local who she advised to stock up on hand wash. (PROSE: Alabama’s Blue Box)
 * River Song briefly made contact with the Thirteenth Doctor's mind when she touched the Eye of Horus. The Doctor helped to snap her out of the device's temptations. (PROSE: The Ruby's Curse)

Alternate timelines
In a potential future, the Doctor found herself trapped inside the Catastrophia. Due to the Catastrophia's warped temporal laws, the Doctor's timeline from here was split into two outcomes. In one timeline, the Doctor never escaped, and eventually lost her mind, becoming the Herald. In another, the Doctor took shelter inside the logic cube and became the Sanity. (COMIC: Herald of Madness, Mistress of Chaos)

In an aborted timeline, claimed he had killed the Doctor by throwing her into the heart of a star, after she escaped from being shackled in its orbit. (AUDIO: Masterful)

Other references
After the 2021 Dalek civil war, (TV: Revolution of the Daleks) Dan Lewis was read a horoscope by his friend which foretold many things that all came true, such as the letter D being important and thirteen being his lucky number. (TV: Welcome to the TARDIS...)

Personality
Playful to the end, (TV: The Power of the Doctor) the Thirteenth Doctor was a kid at heart, (TV: Legend of the Sea Devils) looking for even the most mundane way to have fun in the universe (TV: The Woman Who Fell to Earth, Kerblam!) having "never been a fan of growing up". (TV: Fugitive of the Judoon) Though she enjoyed having many friends, (TV: The Power of the Doctor) and disliked being alone, (TV: Arachnids in the UK, Can You Hear Me?) the Doctor was wary about getting attached due to knowing the pain that came with endings. (TV: Legend of the Sea Devils)

Influenced by the parting words of the Twelfth Doctor, (TV: Twice Upon a Time) the Thirteenth Doctor was more invested in the personal welfare of others, (TV: Resolution, Revolution of the Daleks) taking the time to remember their names upon meeting them as a show of friendship, (TV: The Woman Who Fell to Earth, Can You Hear Me?) and encourage them to overcome their challenges. (TV: The Ghost Monument) However, being the "private type", (TV: The Woman Who Fell to Earth) she was evasive with her friends when questioned about her past and motives. (TV: Spyfall, Fugitive of the Judoon, The Halloween Apocalypse, Once, Upon Time, Eve of the Daleks) especially following the death of Grace O'Brien, whom she had been more open with. (TV: The Woman Who Fell to Earth) Indeed, when her friends weren't around, or the situation became too dire, the Doctor could become cold and intimidating. (TV: Rosa, Demons of the Punjab, Resolution, The Haunting of Villa Diodati, War of the Sontarans) She was also displeased to be reminded of being an outcast, (TV: The Ghost Monument) and emphasised with Nikola Tesla for feeling "out of place" among other people. (TV: Nikola Tesla's Night of Terror)

Feeling "a duty to others [that] might be in trouble", (TV: The Ghost Monument) the Doctor would be drawn to those that appeared in distress to offer a helping hand, (TV: Arachnids in the UK) making it a priority to save everyone she could that was in danger, including people she had either only just met or never met at all, even if it was detrimental to her stopping larger issues, (TV: The Woman Who Fell to Earth, The Witchfinders, It Takes You Away, Resolution, Orphan 55, Fugitive of the Judoon, Can You Hear Me?, War of the Sontarans, Once, Upon Time, The Vanquishers, Eve of the Daleks) seeing everyone in the universe as her family. (WC: Message from the Doctor) She frequently put herself between her friends and danger, (TV: The Woman Who Fell to Earth, The Ghost Monument, Arachnids in the UK, Kerblam!, Nikola Tesla's Night of Terror) and would do her best to ensure that she was alone when taking risks to prevent harm befalling a bystander or to keep track of those under her protection. (TV: Resolution, Orphan 55, Village of the Angels, Eve of the Daleks)

Knowing that her inherent kindness was a detriment, (TV: Demons of the Punjab) the Doctor felt discomfort when put in a situation where she could only be unhappy, (TV: Rosa, Demons of the Punjab, The Haunting of Villa Diodati, Revolution of the Daleks, The Vanquishers) and tried to hide her negative emotions by shutting down when faced with hard questions or serious conversations, (TV: Fugitive of the Judoon, The Haunting of Villa Diodati, The Timeless Children, Once, Upon Time, Legend of the Sea Devils) making her come across as emotionally distant. (TV: The Woman Who Fell to Earth, The Battle of Ranskoor Av Kolos, Can You Hear Me?) However, she tried to avoid focusing on negatives to not "kill the vibe", (TV: The Ghost Monument, Rosa) and sought to keep an open mind that was unclouded by sheer assumptions, (TV: It Takes You Away) even being willing to rescind her disbelief in ghosts when Graham told her about his supernatural encounter, concluding that ghosts didn't exist "unless they [did]". (TV: The Haunting of Villa Diodati)

Fast to take the helm in a moment of crisis, (TV: The Woman Who Fell to Earth, The Tsuranga Conundrum, Orphan 55, Fugitive of the Judoon, War of the Sontarans) she disliked being told what to do, (TV: The Tsuranga Conundrum) and insisting on being in charge when others' leadership resulted in counterproductive results, (TV: War of the Sontarans, Eve of the Daleks) believing that she had "all the authorisation [she could] ever need", (TV: Arachnids in the UK) as she saw her authority to be "mountainous". (TV: The Haunting of Villa Diodati) Even while trying to act incognito, the Doctor had no patience for others' claims of authority, especially when the authority was misused and unearned by the authoritative figure. (TV: Kerblam!, Orphan 55, War of the Sontarans) She preferred to "get on with the job", (TV: The Witchfinders) and would become dismissive of those around her when focusing on the task at hand. (TV: Praxeus, The Haunting of Villa Diodati, Ascension of the Cybermen, Revolution of the Daleks, Eve of the Daleks)

She would keep her discoveries hidden from others with the mind-set of protecting them from a harmful realisation, (TV: It Takes You Away, Orphan 55) and was not above being cryptic, handing an annotated map of 14th century Venice without explaining it, and leaving Missy to discover for herself what the annotations meant, while also not divulging her true identity to Missy. (PROSE: The Liar, the Glitch and the War Zone) However, she would be upfront with her feelings when letting people know when she was afraid or no longer feeling a certain way, (TV: Demons of the Punjab, The Witchfinders, It Takes You Away, Resolution, Once, Upon Time, The Vanquishers) unless it was a subject she was still adjusting too. (TV: Revolution of the Daleks)

Fearful of the destruction that threatened species' ability to build and live, and seeing that "life must win" to justify itself, (TV: The Vanquishers) the Thirteenth Doctor would view individuals as the source of the problems with the established systems, rather than point fault at the systems themselves, (TV: Kerblam!) sympathising with how scary new things could be. (TV: The Woman Who Fell to Earth, Revolution of the Daleks)

Striving to have the moral high ground, (TV: Fugitive of the Judoon, Revolution of the Daleks) the Doctor was unsympathetic to those that wanted murderous revenge on past tormentors, (TV: The Battle of Ranskoor Av Kolos, War of the Sontarans) and not take kindly to being threatened. (TV: Rosa) She was also more passive than her predecessors, being more willing to leave a situation to its historical fate if it couldn't be stopped, (TV: Rosa, Demons of the Punjab, Spyfall) and would allow others to step in to quell a situation in her place with little resistance. (TV: Rosa, Orphan 55, The Timeless Children, Legend of the Sea Devils)

A self-proclaimed "nutter", (TV: It Takes You Away) though one that was never "ridiculous", (TV: Village of the Angels) the Doctor had a ruthless side to her, (TV: Arachnids in the UK, Spyfall, Nikola Tesla's Night of Terror, The Haunting of Villa Diodati, Revolution of the Daleks, Village of the Angels) and could quickly turn short tempered and snappish, with not even her friends being sparred from her outbursts. (TV: The Haunting of Villa Diodati, Ascension of the Cybermen, Once, Upon Time) When her friends tried to talk back to her, she would defensively try to change the subject by reminding them of the nice places she took them too. (TV: The Tsuranga Conundrum, The Halloween Apocalypse)

She also had a bit of an ego, boasting about her intelligence, (TV: The Ghost Monument, The Battle of Ranskoor Av Kolos) not being afraid to brag about her talents, (TV: The Woman Who Fell to Earth, War of the Sontarans, Survivors of the Flux, The Power of the Doctor) wanting people to be impressed by her, (TV: The Tsuranga Conundrum, Can You Hear Me?, Legend of the Sea Devils) and becoming gleeful when the Reconnaissance Dalek recognised her as the Doctor. (TV: Resolution) She was more concerned about being embarrassed by being wrong instead of more fatal consequences, (TV: The Tsuranga Conundrum) and could get self-defensive over how others described her, being offended when she was accused of having a "small mind", (TV: The Woman Who Fell to Earth) taking umbrage with being called "little". (TV: Fugitive of the Judoon) and feeling offended when she misunderstood why Bel was calling her "unstable". (TV: The Vanquishers)

The Thirteenth Doctor had a love for talking, (TV: The Witchfinders) frequently rambling to distract herself or others from her worries, or to inspire hope in herself, (TV: Demons of the Punjab, Spyfall, The Timeless Children, Revolution of the Daleks) and to distract her foes so she could have time to think. (TV: Legend of the Sea Devils) She once admitted she could talk to herself without fear of isolation, believing that another person in a conversation would just "get in the way". (TV: Orphan 55) However, when she starred down an adversary, the Doctor would appear cease rambling to become a confident and direct speaker, often acting in a passive aggressive manner to antagonise her opponents into exposing their shortcomings and take control of their interaction. (TV: The Woman Who Fell to Earth, Rosa, The Witchfinders, Nikola Tesla's Night of Terror, War of the Sontarans, The Vanquishers, Legend of the Sea Devils)

Describing herself as "socially awkward", (TV: Arachnids in the UK, Can You Hear Me?) the Doctor was capable of inadvertently coming off as rude with her blunt word choices, (TV: Arachnids in the UK, Resolution, Spyfall, Praxeus, Revolution of the Daleks) openly pointing out the ineffectiveness of others' aid, (TV: The Woman Who Fell to Earth, Spyfall) being clear with her feelings towards someone for their past actions, (TV: Resolution) voicing her frustrations when people in danger were unprepared for defensive combat, (TV: Ascension of the Cybermen) and calling Nikola Tesla a "big fat liar" after he tried to deceive her. (TV: Nikola Tesla's Night of Terror) When Graham opened up to her about his fears of his cancer returning, the Doctor openly stated her uncertainty on how to respond, instead electing to narrate her movements and admit she would later think of something she should have said to him, which did make Graham chuckle. (TV: Can You Hear Me?) Like previous incarnations, the Thirteenth Doctor enjoyed it when people underestimated her, deliberately using her awkwardness to make herself seem "smaller", but found it disappointing when people continued to dismiss her after she threw off the persona. (PROSE: The Shadow Passes)

She retained the absent-mindedness of her previous incarnation, tending to forget how many times she did something, (TV: Rosa) forgetting whether she was awarding points or gold stars to her companions, (TV: Demons of the Punjab) and only remembering she was holding an item of importance after asking for its whereabouts in a state of a panic. (TV: Spyfall) She could forget when someone was still next to her, (TV: The Ghost Monument, Fugitive of the Judoon) and fail to notice when her companions were absence, even when they had been missing for some time, (TV: Fugitive of the Judoon, Can You Hear Me?) and not check if her instructions were understood before sending them off on an assignment, (TV: The Halloween Apocalypse) with a self-admitted tendency to confuse "meaning to say something" with "actually saying it". (TV: Praxeus)

She also retained her predecessor's veneration of the dead, (TV: Demons of the Punjab) holding a respect for all living beings, even if they caused harm due to their nature, (TV: Arachnids in the UK) and sought to offer even the deadliest of her foes the chance to retreat, (TV: Resolution) but would offer no second chances to those that truly irked her. (TV: Nikola Tesla's Night of Terror)

Upon seeing Gallifrey in ruin, the Doctor reacted with devastation. After discovering the Spy Master was responsible for the act in retaliation for "the lie of the Timeless Child", the Doctor was left in a foul mood, (TV: Spyfall) that lasted for some time. (TV: Orphan 55, Fugitive of the Judoon) Even after some time had passed, the Doctor was still sore on the subject of dead planets. (TV: Nikola Tesla's Night of Terror) She would occasionally revisit Gallifrey. (TV: Fugitive of the Judoon) After the Master revealed that she was the Timeless Child of legend before the Division had redacted the memories of her earlier lives, the Doctor had a brief identity crisis, until a conversation with the Fugitive Doctor in the Matrix convinced her that, rather than being reduced to less, she "contain[ed] multitudes more than she ever thought". (TV: The Timeless Children) However, even after having "decades" in prison to dwell on her discovery, she admitted to Ryan that she was continuing to struggle with who she really was. (TV: Revolution of the Daleks) The Doctor then became desperate to seek answers on her forgotten past, (TV: The Halloween Apocalypse, Once, Upon Time) but, once she held all the answers in her hand, she elected to leave them for another day when she reflected on what she had already learnt. (TV: The Vanquishers)

Seeing morality as a strength, (TV: Survivors of the Flux) the Thirteenth Doctor stated that love was central to her "faith", believing it to be the better source of belief. (TV: Demons of the Punjab, The Witchfinders) She was also a strong believer in hope, (TV: The Tsuranga Conundrum, The Battle of Ranskoor Av Kolos) and thought that the meaning of life was to continuously try to achieve goals with friends made along the way. (TV: Eve of the Daleks) She voiced the opinions that "where there [was] risk, there [was] hope" (TV: Spyfall) and that there was "always a way out" of a crisis. (TV: Eve of the Daleks)

Seeing herself as an "expert" on running towards and away from danger, the Thirteenth Doctor believed that running was sometimes the bravest option, as an act of defiance on giving up and a proof of agency against letting the "monsters" decide one's fate, (COMIC: Hidden Human History) though she didn't think being "a little bit scared [was] a bad thing." (TV: The Witchfinders) She used jokes to defuse tension, (TV: The Tsuranga Conundrum) believing that the "bad ones" were the best to use. (WC: Message from the Doctor)

Like her early incarnations, the Thirteenth Doctor was not openly interested in romance, (TV: Eve of the Daleks) but retained a respect for it, (TV: Demons of the Punjab) even describing herself as a "romantic", (TV: Praxeus) though she disliked being flirted with. (TV: The Haunting of Villa Diodati) She purposely distanced herself away from the idea of being romantic to spare herself the pain that came with outliving her lover, preferring to "live in the present" and enjoy the relationships she had. (TV: Legend of the Sea Devils) She also stood against prejudices, but masked her disgust with gentle comments of acceptance. (TV: Rosa)

She once noted that when working on something, she liked to lay out all she needed on a table in front of her, allowing her to have a complete view of the task at hand. (PROSE: TARDIS Tour) She believed that "true knowledge [had] to be earned", (TV: The Witchfinders) and that hate would only spread if left unopposed. (TV: Revolution of the Daleks)

The Doctor enjoyed tea (TV: Arachnids in the UK) and biscuits, (TV: Demons of the Punjab) with custard creams being a particular favourite, (TV: The Ghost Monument) and Yorkshire Tea being her preference. (PROSE: The Good Doctor) She liked to have cereal and croissants for breakfast, (TV: Arachnids in the UK) and enjoyed fried egg sandwiches. (TV: The Woman Who Fell to Earth) However, she disliked bourbon biscuits, (PROSE: Chasing the Dawn) and olives. (PROSE: The Good Doctor)

She retained her eleventh incarnation's fondness for fezzes, (TV: Kerblam!) enjoyed wearing plumed headgear, (TV: The Haunting of Villa Diodati) and admired Ryan for how well he looked in a beanie hat. (TV: ''Revolution of the Daleks')

She also liked holograms, "big locked doors", (TV: The Ghost Monument) the musical Hamilton, (TV: The Tsuranga Conundrum) the Kerb!am Man, (TV: Kerblam!) apple bobbing, (TV: The Witchfinders) Wellington boots, (TV: The Battle of Ranskoor Av Kolos) heavy metal music, (NOTVALID: The Runaway) "pretty" landscapes, (COMIC: Hidden Human History) and laminators. (TV: Spyfall)

Admiring machines that fulfilled a great purpose, (TV: The Tsuranga Conundrum, Can You Hear Me?) the Doctor would scold those who used the power to create in their efforts for destruction. (TV: The Battle of Ranskoor Av Kolos) She also held a great admiration for those who crafted things for themselves and made their own inventions, praising both Ada Lovelace and Nikola Tesla for their ingenuity and forward thinking, seeing the lack of recognition each received as trivial in comparison to their accomplishments. (TV: Spyfall, Nikola Tesla's Night of Terror) She also admired Amelia Earhart for taking the world on and pushing it forward. (PROSE: Chasing the Dawn) In contrast, she admonished those who only took power and recognition through ownership alone, claiming that people who never created things themselves were destined to be forgotten by history. (TV: Nikola Tesla's Night of Terror)

While she once claimed to "love a conspiracy", (TV: Arachnids in the UK) she disliked ones that resulted in information being purposely withheld from her, (TV: Kerblam!) and she especially hated "not understanding" something. (TV: The Halloween Apocalypse) She disliked dealing with people who tried to deny the extraordinary and unexplainable, even after they had witnessed it, (TV: The Woman Who Fell to Earth) and, while she gave quick hugs for greetings and farewells, (TV: Arachnids in the UK, Revolution of the Daleks, The Vanquishers) did not usually enjoy physical contact with others. (TV: Orphan 55, The Timeless Children) She also disliked having empty pockets, (TV: The Woman Who Fell to Earth) bullies, and people in danger. (TV: Kerblam!)

The Thirteenth Doctor claimed that she enjoyed making "trip[s] into the past" for research purposes, but knew to be cautious when making such trips, even writing a note that chastises Missy for her lack of caution in meddling with time. (PROSE: The Liar, the Glitch and the War Zone) However, she was annoyed about how rarely history lined up with historical documentation. (TV: Legend of the Sea Devils) She took her devotion to the preservation of history so seriously that she described herself and her companions as its "guardians", (TV: Rosa) even excluding historical figures from her missions when she could, (TV: The Vanquishers) though would still acknowledge that time "[was]n't always fixed". (TV: Village of the Angels)

While she was careful not to tamper with established history, (TV: The Haunting of Villa Diodati) the Doctor found herself willing take her companions to visit their own family history, with some persuasion, though warned her friends to "tread softly" on their own history. (TV: Demons of the Punjab) At times, the Doctor's sense of justice got the better of her, making her intervene in past events if she believed them to be minuscule enough to not impact history in too great a detail. (TV: The Witchfinders) She would still show signs of distress if preserving history meant letting injustices stand and go unpunished. (TV: Rosa, Demons of the Punjab) After Graham and Ryan left, the Doctor briefly contemplated travelling back in time to get more time with them, but did not act on the idea. (TV: Revolution of the Daleks)

The Thirteenth Doctor disliked weaponry, (TV: Kerblam!) opting instead to use her intellect and environment to her advantage, (TV: The Ghost Monument, Arachnids in the UK) even voicing her disapproval when someone resorted to using a weapon, (TV: The Ghost Monument, Spyfall) though she admitted this was a "flexible creed", as anything that could be rebuilt was "fair game" to be destroyed. (TV: The Battle of Ranskoor Av Kolos) Specifically, the Doctor believed guns "made things worse" by agitated attackers, (TV: The Ghost Monument) and that only "idiots" carried knives. (TV: The Woman Who Fell to Earth) After Leon Perkins threatened her with a gun, the Doctor favoured serving him tea over imprisoning him, hoping to come to a common understanding with him. (COMIC: A New Beginning)

Furthermore, the Thirteenth Doctor was passionately against killing, always trying her best to subdue her opponents in a non-lethal fashion, (TV: Arachnids in the UK, The Witchfinders, The Battle of Ranskoor Av Kolos) and would be particularly outraged if an enemy was killed after they had already been defeated. (TV: The Woman Who Fell to Earth, War of the Sontarans, Legend of the Sea Devils) She was deeply disturbed when she was forced to indirectly be responsible for the loss of life, (TV: Kerblam!) seeking confirmation from her friends that she had given every opportunity for a better outcome when she resorted to killing her foes. (TV: Resolution) While she was prepared to unleash the death particle on Gallifrey to stop the Spy Master and the CyberMasters, she was ultimately unable to detonate the device. (TV: The Timeless Children) However, when facing opponents that posed a great threat to innocent lives and history, the Doctor was more willing to lead them to their deaths. (TV: Resolution, Revolution of the Daleks, War of the Sontarans, The Vanquishers)

When her patience and rage reached their zenith, the Doctor would resort to psychically attacking the one she was enraged with. (TV: The Timeless Children)

She implored those around her to ask questions about a situation, and showed no irritation on how off topic the questions got, (TV: The Woman Who Fell to Earth) even showing gleeful excitement when the right questions were asked, (TV: Rosa) but would clarify when "the wrong question" to a situation was being posed. (TV: Arachnids in the UK) However, she showed displeasure in handling multiple questions simultaneously, (TV: The Woman Who Fell to Earth) and would refuse to answer questions asked of her if the person did not answer any questions she asked first. (TV: The Battle of Ranskoor Av Kolos) She also excused her solo trips to the destroyed Gallifrey by claiming that Team TARDIS "ask[ed] too many questions" about her private affairs. (TV: Fugitive of the Judoon)

Thriving on the gleeful excitement of unpredictability, (TV: The Halloween Apocalypse, Eve of the Daleks) the Thirteenth Doctor would run into a situation without a strategy in mind, hoping to come up with a plan in the heat of the moment, (TV: The Woman Who Fell to Earth, Resolution, Orphan 55, Once, Upon Time, Legend of the Sea Devils) claiming to be "good in a tight spot" (TV: The Ghost Monument) and to enjoy throwing a "curveball" into the situation, (TV: Fugitive of the Judoon) but would take precautions when she knew how dangerous a situation was, (TV: The Battle of Ranskoor Av Kolos, Resolution, Ascension of the Cybermen, The Power of the Doctor) even using her seemingly unfocused planning to hide a contingency she had prepared in advance. (TV: The Halloween Apocalypse, The Vanquishers) She was confident she could take on any threat, even within a limited time span. (TV: Village of the Angels, Survivors of the Flux)

She had the wisdom to read a situation and know when local authorises would not believe what she could tell them, (TV: The Woman Who Fell to Earth) and to realise when someone was feeling hurt from favouritism. (COMIC: A Little Help from My Friends)

She retained the guilt demonstrated in her prior incarnations over the events of the Last Great Time War. Visiting Cass Fermazzi prior to her death, the Doctor expressed her regret over Cass' fate and noted that saving her was impossible as "[she] was too wrapped up in [the Doctor's] timeline". (PROSE: The Day of the Doctor) Like her immediate predecessor, she believed that "no one ever [won] at war", (PROSE: The Good Doctor) and also thought that "soldiers [paid] the price for their commanders' mistakes." (TV: War of the Sontarans)

While she believed in a trial and error format to solving problems, (TV: Eve of the Daleks) the Doctor rarely learnt from her experiences, such as needing to reassure herself of her identity as "the Doctor" (TV: Revolution of the Daleks) after already being reassured of it by the Fugitive Doctor, (TV: The Timeless Children) and continuing to withhold information from Yaz (TV: Eve of the Daleks) after promising to be more forthcoming with her. (TV: The Vanquishers)

Affectionately calling her previous incarnations her "fam", the Thirteenth Doctor especially enjoyed the company of the Seventh Doctor, singling him out as being "on [her] team" during a Multi-Doctor Event. She also teasingly invited herself to the "wedding" of her bickering second and third incarnations. (WC: Doctors Assemble!)

The Doctor considered Graham O'Brien, Yaz Khan and Ryan Sinclair to be her "best friends". (TV: The Ghost Monument, Resolution) She was encouraging with them, especially when they made a connection or deduction, showed prowess, acted well in a crisis, or came up with a good plan of action. (TV: The Ghost Monument, Arachnids in the UK, The Tsuranga Conundrum, Demons of the Punjab, Resolution, Praxeus) Nevertheless, when one of her friends had a "bad idea", she did not shy away from saying so, (COMIC: A New Beginning) being stern with Graham when he expressed his intent to kill Tzim-Sha to avenge Grace, warning him he would not be invited back into the TARDIS if he carried it through, and expressed her pride in him when he chose not to murder Tzim-Sha. (TV: The Battle of Ranskoor Av Kolos) She would also get agitated with them when she was in a poor mood, (TV: Orphan 55, Ascension of the Cybermen, Once, Upon Time) and was slightly miffed when Ryan suggested that being away from the TARDIS had been good for him. (TV: Revolution of the Daleks)

Wanting to keep them safe above all else, (TV: Once, Upon Time) she always gave her friends the chance to walk away or stay behind when faced with danger, (TV: Rosa, Resolution, The Haunting of Villa Diodati) or would order them to retreat if the dangers proved too severe, (TV: Ascension of the Cybermen) and preferred to face an enemy alone. (TV: Rosa, Demons of the Punjab, The Battle of Ranskoor Av Kolos, Resolution, The Haunting of Villa Diodati)

She felt that Yaz was "one of the greatest people [she'd] ever known", and even admitted that she would date her, were it not for her inability to "fix [her]self to anything", instead opting to just enjoy the relationship they had while it lasted. (TV: Legend of the Sea Devils)

She had a much friendlier approach to Santa Claus than her immediate predecessor, even allowing him to borrow her TARDIS for an emergency, (WC: 'Twas the Night Before Christmas) in spite of her dislike of being separated from her ship. (TV: The Tsuranga Conundrum)

According to Graham O'Brien, when reflecting on her attitude after seeing a ravaged Gallifrey, "one minute [she was] all smiles, [and the] next minute [her] mind [was] somewhere else", but he still believed that the Thirteenth Doctor was "the best person [he knew]". (TV: Fugitive of the Judoon)

When the Doctor was warned about her impending regeneration, she reacted with shock and worry, (TV: The Vanquishers) and reacted with immense fear when the Dalek Executioners were about to kill her. (TV: Eve of the Daleks) Though she wished she could "go on forever", (TV: Legend of the Sea Devils) and raged that she "want[ed] more time" when her regeneration was triggered by the Spy Master redirecting a Qurunx energy beam, the Doctor was quick to compose herself to comfort Yaz, whom she treated to ice cream as a parting gift, telling her of her love for her companions and how she "loved being [herself]". Ultimately, the Doctor chose to regenerate alone, enjoying a sunrise on top a cliff, telling her next incarnation they were "tag[ged]", though she was saddened not to "know what happen[ed] next". (TV: The Power of the Doctor)

Habits and quirks
The Thirteenth Doctor had some trouble adjusting to perceptions around her new gender, taking some time to get used to people calling her "Ma'am" and "Madam". (TV: The Woman Who Fell to Earth, Rosa) While she would become frustrated when facing judgement because of her new form, (TV: The Witchfinders, Spyfall, War of the Sontarans) she saw advantages in "[looking] like a girl" in interactions with others, (PROSE: Chasing the Dawn) and openly enjoyed getting opportunities she never had when she was a man. (TV: Demons of the Punjab) The Doctor would occasionally slip up when referring to herself, forgetting to account for the change in her gender identity, (TV: The Ghost Monument, Spyfall) as she did not consider herself to be a man or a woman "in the way that [humans] understand" such things. (PROSE: The Good Doctor)

Like her ninth incarnation, the Thirteenth Doctor spoke with a Northern accent, (TV: Twice Upon a Time) and also used "Oi" to get someone's attention, (TV: The Woman Who Fell to Earth, Rosa, The Battle of Ranskoor Av Kolos, Orphan 55, The Vanquishers, Legend of the Sea Devils) when beginning a counter-argument, (TV: The Tsuranga Conundrum, Demons of the Punjab, Kerblam!) or when she felt insulted. (TV: Can You Hear Me?, The Vanquishers)

After struggling to find the right term of affection to refer to her companions as, (TV: The Woman Who Fell to Earth, The Witchfinders, Resolution) the Doctor eventually settled on calling them her "fam", (TV: Spyfall, Ascension of the Cybermen, The Timeless Children, Revolution of the Daleks) after twice testing the waters with it, (TV: Arachnids in the UK, The Battle of Ranskoor Av Kolos) and would call a larger ensemble of her friends the "extended fam". (TV: Resolution, The Power of the Doctor) She even addressed all her previous incarnations as her "fam" when bidding them farewell. (WC: Doctors Assemble!)

When she came to a realisation, the Doctor would utter, "oh", as the information dawned on her, (TV: The Ghost Monument, Rosa, Arachnids in the UK, The Tsuranga Conundrum, Kerblam!, It Takes You Away, The Battle of Ranskoor Av Kolos, Resolution, Spyfall, Praxeus, Can You Hear Me?, The Timeless Children, The Vanquishers, Legend of the Sea Devils) and tended to give a yelp when surprised. (TV: The Ghost Monument, The Tsuranga Conundrum, Kerblam!, Resolution, Spyfall,Can You Hear Me?, Ascension of the Cybermen, The Timeless Children, The Halloween Apocalypse, Village of the Angels)

Similar to her tenth incarnation, the Thirteenth Doctor would consider good things and ideas to be "brilliant", (TV: Twice Upon a Time, Rosa, Kerblam!) but would also use the word in a sarcastic sense, (TV: The Ghost Monument, It Takes You Away, Village of the Angels) and to describe how someone performed in a crisis, (TV: The Tsuranga Conundrum, Orphan 55) or when describing a person in general. (TV: Rosa, The Witchfinders, It Takes You Away, Spyfall, Praxeus, Eve of the Daleks) Also like the Tenth Doctor, she was quick to apologise for her own actions and words, as well as when she felt responsible for others' circumstances. (TV: The Woman Who Fell to Earth, The Ghost Monument, Rosa, The Tsuranga Conundrum, Demons of the Punjab, The Witchfinders, Orphan 55, Ascension of the Cybermen, Revolution of the Daleks, The Halloween Apocalypse, War of the Sontarans, Once, Upon Time, The Vanquishers, Eve of the Daleks)

She also made a habit of saying, "Right", to start her sentences, (TV: The Woman Who Fell to Earth, The Ghost Monument, Rosa, Arachnids in the UK, Kerblam!, The Witchfinders, It Takes You Away, Nikola Tesla's Night of Terror, Fugitive of the Judoon, Praxeus, Revolution of the Daleks, The Halloween Apocalypse, The Vanquishers, Eve of the Daleks) and would say things were going to be "fine" to reassure people, or when describing an ongoing situation, usually when all evidence pointed to the contrary. (TV: The Woman Who Fell to Earth, The Ghost Monument, Spyfall, Orphan 55, The Halloween Apocalypse, The Vanquishers)

When pressing someone to perform an action in a hurry, she would say she would say "chop-chop", (TV: The Woman Who Fell to Earth, Kerblam!, The Power of the Doctor) "get a shift on", (TV: The Ghost Monument, The Tsuranga Conundrum) or "quick smart". (TV: Village of the Angels, Survivors of the Flux, The Vanquishers)

When speaking in absolutes, she tended to describe a development, or even a person, with "total", (TV: The Woman Who Fell to Earth, The Ghost Monument, Spyfall, Nikola Tesla's Night of Terror, Fugitive of the Judoon) "proper", (TV: The Ghost Monument, War of the Sontarans, Village of the Angels, The Power of the Doctor) or "totally". (TV: Kerblam!, It Takes You Away) She would also vocalise her usage of incorrect spelling, such as with "skillz". (TV: Resolution)

She was known for giving speeches that had an educational quality to them, (TV: Rosa, The Battle of Ranskoor Av Kolos, Orphan 55, Nikola Tesla's Night of Terror) and for referring to others by a title, codename, rank or even by their full name. (TV: Rosa, Arachnids in the UK, Resolution, Spyfall, War of the Sontarans, The Vanquishers) She was also prone to backtracking to contradict her statements, (TV: The Woman Who Fell to Earth, The Ghost Monument, Arachnids in the UK, Kerblam!, Orphan 55, Can You Hear Me?, Revolution of the Daleks, War of the Sontarans, The Vanquishers) often saying, "probably", after her statements to show her uncertainty.

The Thirteenth Doctor would regularly lean her face forward, with her eyebrows lowered and her upper lip stretched upwards, with it being rare for her to go a full adventure without once scrunching her face up. (TV: Kerblam!, The Battle of Ranskoor Av Kolos, Fugitive of the Judoon, The Flux is Coming..., Once, Upon Time) She also frequently rested her hands on her hips, an impulse that was inherited by the Spy Master when he hijacked her body, and also replicated by the Holo-Doctor when it took on her appearance. (TV: The Power of the Doctor)

When pleased, the Doctor would beam a wide smile, (TV: Twice Upon a Time, The Woman Who Fell to Earth, The Ghost Monument, Arachnids in the UK, Demons of the Punjab,The Witchfinders, Kerblam!, Resolution, Orphan 55, Nikola Tesla's Night of Terror, The Haunting of Villa Diodati, The Timeless Children, Revolution of the Daleks, The Halloween Apocalypse, Legend of the Sea Devils, The Power of the Doctor) but her smiles were mostly a front to keep others' from realising the hurt she felt, and she would drop them once she was alone. (TV: The Vanquishers)

When taking enjoyment in her adversaries' shortcomings, she would wear a mocking grin, (TV: Resolution, Spyfall, Can You Hear Me?, The Haunting of Villa Diodati, War of the Sontarans, The Vanquishers, Legend of the Sea Devils) and would sometimes flick a half-smile. (TV: The Woman Who Fell to Earth, Arachnids in the UK, The Tsuranga Conundrum, Demons of the Punjab, The Battle of Ranskoor Av Kolos, Resolution, The Haunting of Villa Diodati, Revolution of the Daleks, Eve of the Daleks, The Power of the Doctor)

She often stood with her hands behind her back, (TV: The Tsuranga Conundrum, Kerblam!, The Witchfinders, Nikola Tesla's Night of Terror, The Haunting of Villa Diodati, The Halloween Apocalypse, War of the Sontarans, Legend of the Sea Devils) or held together in front of her, (TV: Demons of the Punjab, Resolution, Praxeus, Revolution of the Daleks, War of the Sontarans, The Vanquishers) and would sometimes flick back her coat and rest her hands in her pockets. (TV: Arachnids in the UK, Demons of the Punjab, It Takes You Away, Spyfall)

When giving a speech, proclaiming instructions, or vocally analysing her situation, the Doctor would move her hands upwards, with her hands facing her head and her fingers slightly curled. (TV: The Woman Who Fell to Earth, The Ghost Monument, The Tsuranga Conundrum, Kerblam!, It Takes You Away, Resolution, Spyfall, Nikola Tesla's Night of Terror, Fugitive of the Judoon, Praxeus, The Haunting of Villa Diodati, The Halloween Apocalypse, War of the Sontarans, Once, Upon Time, Survivors of the Flux, The Vanquishers, Eve of the Daleks)

She would flourish her sonic screwdriver with a large overhead arc when drawing it out for use. (TV: The Woman Who Fell to Earth, The Ghost Monument, Arachnids in the UK, The Tsuranga Conundrum, Kerblam!, Spyfall, Orphan 55, The Haunting of Villa Diodati, The Timeless Children, The Halloween Apocalypse, War of the Sontarans, The Vanquishers, Eve of the Daleks)

After witnessing or learning of something that unnerved her, the Doctor would stare into the distance while remaining silent and unresponsive to her surroundings. (TV: Demons of the Punjab, Spyfall, Fugitive of the Judoon, Praxeus, The Timeless Children, Revolution of the Daleks,Once, Upon Time, Survivors of the Flux, The Power of the Doctor) When under stress, she would place her palms on her temples and lean her head backwards. (TV: Resolution, Fugitive of the Judoon, The Timeless Children, War of the Sontarans)

The Thirteenth Doctor used a point system to grade her companions to mark how well they performed. She alternated between giving out points (TV: The Tsuranga Conundrum, It Takes You Away, The Power of the Doctor) and gold stars, (TV: Demons of the Punjab, Praxeus, Revolution of the Daleks, War of the Sontarans) as she could not remember which she had initially decided upon. (TV: Demons of the Punjab)

She had a tendency to make immediate assumptions, sometimes only to discover that her judgement was misplaced, though she would own up to her mistakes once they were pointed out to her, (TV: The Woman Who Fell to Earth, Demons of the Punjab, Kerblam!, Can You Hear Me?, The Halloween Apocalypse) and often boasted about meeting historical figures, usually with an accompanying tale that shed new light on the character of said figure, (TV: The Ghost Monument, Rosa, Arachnids in the UK, Demons of the Punjab, Kerblam!, The Witchfinders) to the point that Yaz affectionately called her a "tragic name-dropper". (COMIC: The White Dragon)

When telling someone to join her in her objectives, she would order them to follow her by saying they were "with [her]". She often flicked her hair away from her face. She would orientate her mind back on track by reminding herself to deal with "first things fitst".

Skills
The Thirteenth Doctor demonstrated astute detective skills, being able to deduce a person's thought pattern through eye contact, (TV: The Woman Who Fell to Earth, The Battle of Ranskoor Av Kolos) tell when she was talking to a bad liar, (TV: Rosa, The Tsuranga Conundrum) unearth a truth by studying someone's facial reaction, (TV: Orphan 55) and, occasionally, tell when someone was attempting to deceive her. (TV: Nikola Tesla's Night of Terror) Likewise, she was an effective liar herself, able to trick an entire fleet of Daleks that she was piloting her TARDIS for them to ambush her, only to reveal after she had trapped them that it was set to take them to the Void to destroy them. (TV: Revolution of the Daleks)

With the aid of Venusian aikido, the Doctor could use her pinkie finger to paralyse someone without harming them by pressing on their throat, (TV: The Ghost Monument, Kerblam!, War of the Sontarans) and could throw someone over her shoulder with little difficulty. (COMIC: The Warmonger) She was also swift and nimble enough to either glide across a surface or perform a perfect front flip. (TV: Resolution, Legend of the Sea Devils)

She was also proficient with a slingshot, (TV: War of the Sontarans) and proved to be a very capable swordfighter. (TV: Legend of the Sea Devils)

By placing her hand on someone's temples, the Doctor could erase their memories, (TV: Spyfall) search through their memories to find information, (TV: Orphan 55, The Haunting of Villa Diodati) or project herself into their mind. (TV: Village of the Angels) In extreme cases, she was capable of telepathically inducing a state of death into someone by showing them how they were destined to die and making their bodies believe the illusion. (TV: The Haunting of Villa Diodati)

When another Time Lord was close enough, the Doctor could engage them in telepathic contact from some distance away, (TV: Spyfall, The Timeless Children, The Vanquishers) or by placing her hand on their temples. (TV: Fugitive of the Judoon)

Having a specialty for "high-speed inventing", the Thirteenth Doctor was a skilled inventor, (TV: Nikola Tesla's Night of Terror) able to craft new contraptions from ordinary raw materials, (TV: The Woman Who Fell to Earth, Demons of the Punjab) or, at any given moment, to alter and adapt technology already at her disposal to meet various needs. (TV: The Woman Who Fell to Earth, Demons of the Punjab, The Battle of Ranskoor Av Kolos, Orphan 55, Nikola Tesla's Night of Terror, Village of the Angels, Eve of the Daleks, Legend of the Sea Devils) She was also a capable mechanic, able to perform maintenance on her TARDIS externally, (TV: Spyfall) quickly repair Vinder's spaceship from wormhole damage, (TV: The Power of the Doctor) and efficiently "hot-[wire]" warp drives and gravity bars. (TV: Ascension of the Cybermen, The Halloween Apocalypse)

Though she favoured elegance in technology, (TV: Nikola Tesla's Night of Terror) the Doctor had little trouble working with more unorganised complexity, even when, to her frustration, some layers "[made] no sense". She was able to quickly reformat Ryan's mobile phone into a tracker to find the gathering coil, (TV: The Woman Who Fell to Earth) and reactivate Twirly to be plugged into the Kerb!am System. (TV: Kerblam!)

She was also equally adept at scientific analysis, able to determine a substance's component ingredients, and even calculate proportions, using only a microscope. (TV: Praxeus) When her sonic screwdriver offered no help, the Doctor was known to go "analogue". (TV: Demons of the Punjab)

She could perform accurate post-mortems when finding a dead body. (TV: The Woman Who Fell to Earth)

She was able to determine the properties of an object by taste, (TV: The Haunting of Villa Diodati, The Halloween Apocalypse) analyse her environment from the taste of the ground, (TV: It Takes You Away) and could determine her location in time and space by observing the smells of her surroundings, (TV: Spyfall, The Halloween Apocalypse) and deduce the age of something from a whiff. (TV: Village of the Angels) She also claimed to be able to smell the effects of time travel on those who had been through the Time Vortex, though noted that this was an oversimplification. (COMIC: A New Beginning)

When in control of her TARDIS, the Doctor was able to pilot the ship around Jake Willis and save him before Suki Cheng's ship exploded with him still onboard. (TV: Praxeus) She was also a competent driver of motor vehicles, able to drive both cars and motorbikes in high-stress situations. (TV: Spyfall)

Without the aid of a translation circuit, the Doctor could read the language of the Creators of Death, (TV: The Ghost Monument) and also showcased the ability to speak English without its aid. (TV: The Woman Who Fell to Earth) She could also decode steganography images. (TV: Spyfall)

Like her predecessors, the Thirteenth Doctor was a skilled escape artist, crediting it to the teachings of Harry Houdini. (TV: The Witchfinders) She could quickly calculate the length of time it would take her to do something, and act with quick succession, (COMIC: The Warmonger) and recite the entirety of Harry Potter and the Philosopher's Stone from memory. (TV: Revolution of the Daleks)

Appearance
The Thirteenth Doctor resembled a woman in her mid-thirties, with hazel-coloured eyes surrounded by crow's feet wrinkles. She had jaw-length blonde hair with dark roots parted to her right and curled around her ears, (TV: Twice Upon a Time) though her hair became straightened by the end of her imprisonment in the Judoon prison. (TV: Revolution of the Daleks) To her annoyance, she was shorter than her previous incarnation. (TV: The Woman Who Fell to Earth)

In preparation for Umbreen's wedding to Prem, the Doctor had henna tattoos temporarily applied to her arms by Hasna. She also had a flower tucked behind her left ear during the ceremony. (TV: Demons of the Punjab)

Immediately after regenerating, the Thirteenth Doctor viewed her reflection and deemed her new face to be "brilliant", (TV: Twice Upon a Time) though she was oblivious to the fact that she had changed from male to female until informed by Yaz Khan. (TV: The Woman Who Fell to Earth) When she was saw herself in the flesh, the Doctor thought herself as being "cute". (TV: The Vanquishers)

Patricia thought that the Thirteenth Doctor's face conveyed a constant, unashamed amazement, (PROSE: The Rhino of Twenty-Three Strand Street) with Lee Clayton also recognising the intelligence conveyed in her eyes. (TV: Fugitive of the Judoon)

Lucy Wilson described her as a "beautiful woman", (PROSE: Avatars of the Intelligence) with James I commenting on her "alluring form", (TV: The Witchfinders) the Sixth Corsair also voiced her approval upon meeting the Doctor, (COMIC: Old Friends) and Ace was impressed with the feminine version while Tegan was shocked. (TV: The Power of the Doctor)

Main attires


After going clothes shopping at a charity shop, (TV: The Woman Who Fell to Earth) the Thirteenth Doctor took to wearing a hooded, periwinkle trenchcoat with midnight blue interim, apart from the sleeves, which had lavender insides, and a rainbow pattern along the edges. (TV: The Woman Who Fell to Earth-The Power of the Doctor) She was very fond of her coat, (TV: The Battle of Ranskoor Av Kolos) and would try to avoid damaging it, (TV: The Witchfinders) though she had to rip part of it to help history go undisturbed from Krasko's meddling, but had the tear repaired by seamstress Rosa Parks. (TV: Rosa)

Under her coat, the Doctor wore a variety of similarly designed t-shirts with rainbow stripes running across their chest, such as a low collar midnight blue shirt, (TV: The Woman Who Fell to Earth) a rose pink low collar shirt, (TV: Rosa) a magenta crew collar shirt, (TV: The Tsuranga Conundrum) a Prussian blue crew collar t-shirt with a smeared rainbow pattern, (TV: Kerblam!) a royal blue crew collar shirt, (TV: Resolution) a burgundy crew collar shirt, (TV: Revolution of the Daleks) and a rust orange crew collar shirt. (TV: Eve of the Daleks) Under her shirt, she wore a white, long-sleeved undershirt. (TV: The Woman Who Fell to Earth, Rosa) On occasion, she would disperse with the t-shirt entirely and instead wear a navy blue jumper, (TV: Spyfall) a cobalt blue jumper, (TV: Orphan 55) or a sapphire blue, buttoned-up, sleeveless waistcoat with lapels and a clock pattern. (TV: The Haunting of Villa Diodati)

She wore a pair of high-waisted teal blue capri trousers, (COMIC: The Many Lives of Doctor Who) kept up by braces, (TV: The Woman Who Fell to Earth) coloured in either mustard yellow (PROSE: Rose) or dark midnight blue. (TV: The Halloween Apocalypse) For footwear, she wore blue, striped socks with brown, lace-up boots. (COMIC: The Many Lives of Doctor Who)

She also wore golden-ringed ear cuffs at the top and at the lobe of her left ear. The top cuff was a series of eight joint stars, and the bottom cuff was in the shape of two hands holding each other. (TV: The Woman Who Fell to Earth)

When performing maintenance on her TARDIS, or building a new device, the Doctor would wear a pair of protective goggles, (TV: The Woman Who Fell to Earth, Spyfall, Nikola Tesla's Night of Terror, Eve of the Daleks, The Power of the Doctor) and, similar to her fourth incarnation, she occasionally wore a scarf around her neck, with either a full rainbow pattern or a navy blue scarf with a rainbow pastern on the ends. (TV: Resolution, The Haunting of Villa Diodati)

She once wore a navy blue bum bag around her waist to carry her sonic screwdriver and psychic paper, (TV: Arachnids in the UK) and also owned a handbag at some point. (PROSE: Contents)

Other clothes
The Thirteenth Doctor had a liking for headgear, and would wear a hat of some kind at the first opportunity. (TV: Kerblam!, The Witchfinders, The Haunting of Villa Diodati)

During her brief employment as a packer at Kerb!am, the Doctor wore the standard purple hi-vis vest for packers over her jacket. (TV: Kerblam!) When gatecrashing Daniel Barton's casino themed party, the Doctor wore a white shirt with a black bow tie with golden dots, black capri trousers, black braces, black boots and socks, and a long black moleskin overcoat. (TV: Spyfall) While searching for the Flor de la Mar, the Doctor discarded her coat and shirts in favour of an azure and crimson brocade blouse with frog buttons. (TV: Legend of the Sea Devils)

While masquerading as the "Masked Assassin", the Doctor hid her face behind a mask with a question mark on it and wore stilettos, with a cloak that spelled the number "13". (PROSE: The Death List)

Behind the scenes
An Avatar bundle of the Thirteenth Doctor was released from 12 March 2020 to 26 March 2020 for players of the game platform Roblox to use.

The first female Doctor
The Thirteenth Doctor was the first main incarnation of the Doctor in the programme's history to be played by a woman, though the idea of a woman Doctor had been explored as early as 1980, when Tom Baker exited the role of the Fourth Doctor, and told the press, "I certainly wish my successor luck, whoever he—or she—might be." When Peter Davison decided to retire from the role of the Fifth Doctor, John Nathan-Turner told the Daily Star that "the hunt for a new Doctor starts today and it's quite feasible it will be a woman".

Second Doctor actor Patrick Troughton was quoted in 1983 as approving of the idea of a woman playing the Doctor. In 1986, series creator Sydney Newman suggested that "at a later stage Doctor Who should be metamorphosed into a woman", offering Joanna Lumley as the potential candidate for the Seventh Doctor, with and Dawn French also being mentioned. Lumley would ultimately portray a Thirteenth Doctor in the 1999 Comic Relief special The Curse of Fatal Death.

The 1999 BBC Eighth Doctor Adventures novel Interference: The Hour of the Geek was the first time it was commented on Time Lords switching genders during a regeneration, with I.M. Foreman twice stating to have had a female tenth incarnation. The 2002 Big Finish audio Seasons of Fear had the Eighth Doctor allude to the possibility of regenerating into a woman while in discussion with Sebastian Grayle, telling Grayle he was "not a glamorous woman at the moment".

The 2003 Big Finish Doctor Who Unbound story Exile starred another female Doctor, played by Arabella Weir. In the context of the story, which was set in another universe, it was established that suicide was necessary for a "sex-change regeneration", which was also considered a crime by the Time Lords. This suggestion garnered much criticism, and was not picked up by any following story.

While discussing casting for the 2005 continuation, Jane Tranter wanted the Ninth Doctor to be the first female incarnation, played by. A cut line in The Unquiet Dead would have had Sneed remark to the Ninth Doctor, "I thought you'd be a woman", to which the Doctor would respond, "No, not yet."

When David Tennant first announced his intention to leave the role of the Tenth Doctor in 2007, the UK Resource Centre for Women in Science, Engineering and Technology wanted the Eleventh Doctor to be female. When the Eleventh Doctor, played by Matt Smith, made his first appearance in 2010's The End of Time, he briefly thought he had regenerated into a woman after examining his long hair, but quickly realised his mistake on finding his Adam's apple.

2011's The Doctor's Wife was the first television story to make direct reference to a Time Lord changing gender through regeneration, with the Doctor talking about the Corsair. 2014 saw Steven Moffat introduce audiences to, who was revealed to be the first female incarnation of the Master in Dark Water, marking the first time an already established character had changed genders after regenerating. However, it was not until 2015 that audiences directly experienced such a regeneration, first in the Big Finish audio story The Black Hole with Pavo, and then in television story Hell Bent when the General regenerated.

In 2019, two years after the announcement of Whittaker's casting, Christopher Eccleston, speaking at Rose City Comic Con, said that the Ninth Doctor should have been female, and even claimed that Rose Tyler-actress Billie Piper should have been the Doctor instead of him, stating that "It's ridiculous we weren't thinking of a female Doctor at that time. In 2004, in me they picked yet another white skinny male to be the Doctor".

In 2020's Fugitive of the Judoon, Jo Martin was introduced as an unknown incarnation, with The Timeless Children establishing that the Doctor had, in fact, lived through multiple incarnations before the First Doctor. Of these forgotten incarnations, of which Martin's is suggested to have been one, at least four were female, including the earliest known incarnation, cementing that the Thirteenth Doctor had not, in fact, been the first female Doctor chronologically.

Appearances prior to her first full television story
The Thirteenth Doctor is unique amongst her previous incarnations by having appeared multiple times in expanded media before her television debut in The Woman Who Fell to Earth, a fact that is acknowledged in the reference book Sheffield Steel: Essays on the Thirteenth Doctor by Sam Maleski.


 * Postcards from the Thirteenth Doctor to Doctor Who spin-off characters were discussed and depicted in the Lethbridge-Stewart short story When Times Change... (printed with The Two Brigadiers), the Iris Wildthyme short story A Lady Doctor?, and the City of the Saved short story Postscript from Stranger Tales of the City.
 * The Doctor was featured in the narrative poem The Death List from the Now We Are Six Hundred collection, with an illustration by Russell T Davies. Her gender was not explicitly specified in the poem, but Davies chose to illustrate her as female, though the Thirteenth Doctor's actor had not been announced yet. The numbers "1" and "3" were also hidden in the swirl of her cloak.
 * She made an extended speaking cameo in The Liar, the Glitch and the War Zone, though her identity was only revealed at the end of the story
 * She made a surprise appearance in Chapter 13 of The Day of the Doctor, and a reference to her in a photograph was made in Rose.
 * Her costume made its debut in the illustration And Introducing....