Twelfth Doctor

Emerging from his previous incarnation's explosive regeneration on Trenzalore, the Twelfth Doctor was the first incarnation of the Doctor's second regeneration cycle, bestowed upon him by the Time Lords at Clara Oswald's urging.

Assured of the survival of Gallifrey, the Doctor was no longer chained down by guilt, becoming a less amiable character with a withdrawn attitude who habitually questioned his own goodness. Although he was no stranger to kindness and humour, the Twelfth Doctor often dispensed with niceties in a tense situation, becoming cold and calculative in critical moments that required sound judgment and the occasional application of sharp practice.

However, because of his detachment from emotions, he could come off as unpleasant, fearsome, and ruthless. He became harder to trust, and acknowledged his shift toward negative personality traits, feeling incensed and fearful at what he was changing into. However, after resolving his morality crisis, he started to show his lighter side more clearly and started to show the more positive traits of his character, until Clara's death caused him to return to his more cynical nature. After having his memory of her removed, however, the Doctor's jovial side mixed into his cynical nature to form a stable personality.

Due to her being initially upset at him changing, the Doctor found more strain in his relationship with Clara, especially when she was dating Danny Pink, a former soldier turned Maths teacher, whom the Doctor shared a mutual dislike of each other. However, he later found respect for Danny after he chose to sacrifice himself to stop a Cyberman invasion brought on by. Though he and Clara parted afterwards, the Doctor decided to renew their friendship after experiencing a dream of a possible future where Clara ended up old and alone.

During a revelation of where his face originated from, the Doctor decided to resurrect Ashildr, a Viking girl who had died protecting her village from the Mire, by using Mire technology to bring her back to life. However, in doing so, the Doctor ended up inadvertently making Ashildr immortal, forcing her to live through countless centuries while everyone around her died, giving her a jaded look on life. After an encounter with Ashildr in an alien refugee camp ended with Clara's death, the Doctor was transported to a tower that was designed to terrify him into confessing the identity of the Hybrid. After 4.5 billion years, during which time he repeatedly burned his old body to load a copy of himself at the moment of his arrival from the transporter's hard drive, the Doctor broke free of the trap and passed through a portal back to his home planet Gallifrey, where he overthrew Rassilon for presidency to save Clara, but ultimately lost his memory of her and was left to solitude.

The Doctor was later reunited with his wife River Song; though she spent most of their adventure unaware of his identity, due to thinking his predecessor was the final incarnation. He then spent the night at Darillium with River that he had avoided numerous times before, enjoying twenty-four years with her before she left for the Library.

He later rescued and re-built Nardole to be his companion. The two traveled to various locations, including helping newspaper reporter Lucy Fletcher and "nanny" and part time superhero Grant Gordon to fight off brain-swapping aliens who wanted to take over Earth.

Foreshadowing
When the Eleventh Doctor was attacked by the Then and the Now on Lujhimene, the Twelfth Doctor was among the faces seen as the Doctor's timeline was almost destroyed. (COMIC: Running to Stay Still)

During a visit to a parallel universe where he was a fictional character in a television series, the Eleventh Doctor told his portrayer, Matt Smith, that Peter Capaldi, whom he had previously rescued from a Mandrel, would be a good choice to play him on the show. (COMIC: The Girl Who Loved Doctor Who)

Post-regeneration
After fighting in the Siege of Trenzalore for 900 years, (PROSE: Tales of Trenzalore: The Eleventh Doctor's Last Stand) the Eleventh Doctor, out of regenerations, facing extermination by the Daleks, and already dying of old age, was ready to accept that he had reached the end of his life. Unable to accept that his death was unavoidable, Clara Oswald appealed to the Time Lords to intervene, and they responded by granting the Doctor a new regeneration cycle. After using the energy from the explosive reset that followed to destroy the Dalek forces besieging Trenzalore, the Doctor returned to his TARDIS to complete his thirteenth regeneration.

Suddenly changing in a flash before Clara's eyes, the new Doctor voiced his surprise at having new kidneys. The TARDIS then began shaking violently, and the Doctor implied to have forgotten how to pilot his ship, much to a shocked Clara's dismay. (TV: The Time of the Doctor) Crashing in pre-historic Earth, the TARDIS was chased and subsequently swallowed by a female tyrannosaur; when the Doctor brought the TARDIS to 1890s London, the dinosaur was accidentally brought along with it.

After the TARDIS was spat out, the Doctor, in a severe bout of post-regenerative trauma, acted very wild and irrationally. He peeked out of the TARDIS door, shushed Strax, slammed the door shut momentarily, and then finally crept out of the TARDIS, trying to identify him as one of the Seven Dwarves. Unable to remember names or faces clearly, he sputtered at the sight of the Paternoster Gang, before being joined by a frazzled and annoyed Clara, trying to keep some degree of control on his livid and maddened state.

Though put to bed to stabilise, the Doctor soon awoke and, grabbing a piece of chalk, doodled strange equations all over the bedroom. Hearing the dinosaur in pain, the Doctor climbed out onto the rooftop and left on horseback when he saw the T-Rex was being burned to ashes. Deciding to investigate, but still suffering a degree of post-regenerative stress, the Doctor wandered the streets of London. Talking to a passing tramp, the Doctor examined his new facial features, noticing that he had seen it before. He took particular note of his new eyebrows, as well as his new Scottish accent, before trading in his previous incarnation's favourite watch for the tramp's coat. (TV: Deep Breath)

Seeing an ad in a newspaper placed by, (TV: Death in Heaven) which seemed to be a message from Clara, the Doctor infiltrated a suspicious restaurant, where he and Clara learned that time travelling Clockwork Droids, under the leadership of the Half-Face Man, had been harvesting humans to repair themselves and reach the Promised Land. Trying to speak on peaceful terms, the Doctor snapped the Control Node out of his illusion of the Promised Land by revealing the true state of his existence. Conflicted and unsure, the Half-Face Man fell out of his escape pod, either jumping or having been pushed by the Doctor.

The Doctor briefly left Clara behind to redecorate the TARDIS console room and settle on a new outfit. Returning for Clara, the Doctor spoke of the suspicious way Clara had met him in his previous incarnation, only for Clara to likewise voice her uncertainty of the Doctor's identity and asked to be returned home. Attempting to return Clara home, the Doctor ended up in Glasgow by mistake. However, Clara decided to go out for coffee with the new Doctor after the Eleventh Doctor called her and encouraged her to help the Doctor through his regeneration; the new Doctor, however, seemed uncomfortable with the hug Clara gave him. (TV: Deep Breath)

Early experiences
Wanting to investigate a series of murders, the Doctor left Clara behind in Glasgow to get her some coffee from the Intergalactic Coffee Roasting Station. There, the Doctor made conversation with a mutant called 78351 in the queue, and then realised that, in a previous incarnation, he had saved 78351 and others like him from a laboratory on Collabria. Before either could go into further detail, the coffee ran out and a female customer was killed during a blackout.

Deciding to take 78351 on as a companion, the Doctor examined the dead body and determined that all the caffeine in her system had been drained. Briefly accused of being the killer before suspicion fell elsewhere, the Doctor found two bite marks on the deceased, and then a Blowfish was also murdered. Using his sonic screwdriver, the Doctor found that 78351's adrenaline levels had increased, and, fearful that he would be the next victim, claimed that he was tired of the lights going out and took 78351 to the master control centre to draw out the killer, telling 78351 that they were going to fix the lights.

Finding the technicians murdered, and that they had been killed fourteen hours before the first victim, the lights suddenly went out again and, when both of them emerged unharmed, the Doctor realised that 78351 was the killer, as his adrenaline levels had decreased. Wanting to take him off the station, the Doctor had 78351 take him to his ship. Managing to outmaneuver the security drones, the Doctor and 78351 fled the ICRS, and the Doctor informed 78351 of his discoveries.

Turning out the ship's lights to see 78351's true form, the Doctor likened 78351's transformation to puberty, and told him he had to decide if he wanted to control his adult body. When he also told him that he might not have the energy to stabilise himself, 78351 set his ship to collide with a nearby sun to get the energy burst. Promising to buy 78351's friend a coffee from him, the Doctor left the ship in an escape pod, and returned to the ICRS. (PROSE: Lights Out)

Intending to return to Clara with some coffee, the Doctor saved a Combined Galactic Resistance fighter pilot named Journey Blue from a Dalek Saucer attack, though left her brother behind in the explosion. After prompting her into asking nicely, the Doctor returned Journey to her command ship, the Aristotle, where Colonel Morgan Blue introduced him to a Dalek that had developed a fault and turned good.

Returning for Clara, three weeks later from her perspective, the Doctor asked her if she thought he was a good man, a question that Clara found herself unable to answer, and returned to base to help the Dalek. Joined by Journey and two other soldiers named Gretchen Carlisle and Ross, the Doctor and Clara used a Molecular nanoscaler to miniaturise themselves and enter the Dalek — whom the Doctor nicknamed "Rusty". After losing Ross to the Dalek's antibodies, the Doctor discovered a radiation leak from within the Dalek and learned that Rusty had turned good after seeing a star being born. Following the radiation, the Doctor discovered damage to Rusty's power source was slowly killing him, and repaired the damage with his sonic screwdriver.

However, fixing Rusty's power core resulted in the malfunction that turned Rusty good to be reversed, with Rusty's destructive nature returning, and causing Rusty to go on a killing spree, as well as send a distress beacon to summon the Daleks to the rebels' base. After getting slapped and lectured by Clara for his apathy, the Doctor realised he could turn Rusty good again by reawakening his memory of the star being born.

Instructing Clara to find a way to restore Rusty's memories of the star, the Doctor made his way to the Kaled mutant within Rusty to mind linked with him, causing Rusty to see the Doctor's hatred of the Daleks and destroy the Daleks that had responded to his distress beacon. Leaving to continue his crusade against the Daleks, Rusty commented that Doctor would have made a good Dalek before both of them left. After declining Journey's request to travel with him and Clara, the Doctor returned Clara home, both still unsure if the Doctor was a good man, but with Clara convinced he was at least trying to be one. (TV: Into the Dalek)

New adventures with Clara
Spending some more time on his own, the Doctor became alerted to a creature that disguised itself as a motorway to consume planets into other dimensions. Summoning Clara to assist him, the Doctor was surprised when the creature disappeared, unaware that Clara had tricked the creature into consuming itself. (COMIC: Road Rage)

The Doctor was given some chips by Clara, and then rambled about how great they tasted. (COMIC: Untitled) Attempting to get a reservation at a restaurant on Calbaron III, the Doctor and Clara found there was a three-year lack of tables. They booked and went three years to the future, only to learn the restaurant was closed to celebrate the third anniversary of the overthrowing of a tyrannical emperor. They finally made their booking six years prior for three years later. When the Doctor found that the tyrannical emperor had scratched his TARDIS, he decided to overthrow him, resulting in the anniversary. (COMIC: Planet of the Diners)

The Doctor repaired a scratch on the TARDIS, but found that this caused time within the TARDIS to temporarily run backwards, much to Clara's annoyance when she tried to converse with him. (COMIC: The Inversion of Time)

When the TARDIS was swarmed with Adipose, the Doctor claimed he was "not an Adipose person." He then had Clara take out the rubbish, as he claimed he wasn't a "taking-the-bin-out" person, with Clara declaring his attitude had to stop. (COMIC: The Bin Dilemma)

Deciding to return to Victorian London, the Doctor and Clara reunited with the Paternoster Gang to investigate a carnival at the Frost Fairs, where some performers had gained powers, in connection with a death that had occurred. They discovered these events were linked to weapon-creator Orestes Milton, who was hiding from the Shadow Proclamation. The Doctor stopped Milton's anger-inducing machine, but was unable to prevent his escape. However, Affinity, a shape-shifter created by Milton, tricked the rogue into thinking the Shadow Proclamation wanted his help; the real organization destroyed Milton's ship when it attempted to leave Earth. The humans altered by Milton retained their powers, deciding to resume their work at the fair. (PROSE: Silhouette)

Deciding to give Clara the choice of their next destination, the Doctor took her to Sherwood Forest to meet Robin Hood, though he was sceptical of Robin's actual existence. He was proven wrong when Robin shot his TARDIS with an arrow seconds after they arrived; however, he refused to believe Robin and his Merry Men were real upon visiting their camp.

After participating in an archery contest for a golden arrow, the Doctor got himself, Clara and Robin captured by the Sheriff of Nottingham, who had allied with alien robots disguised as his knights. Escaping, the Doctor and Robin found out the robots were trying to reach the Promised Land, but lacked sufficient gold to repair their engine. Believing Robin was also a robot, the Doctor was re-captured by the Sheriff as Robin took Clara and escaped through a window. Leading a revolution in the Sheriff's dungeon, the Doctor was informed by the Sheriff that Robin Hood was not a robot, just as Robin came to his rescue and defeated the Sheriff. Assisting Robin with Clara's help, the Doctor helped launch the golden arrow into the ship to allow it to escape velocity and explode harmlessly in space.

Robin, having learned about the Doctor's story from Clara, noted that the two of them were not so different from each other: both of them were people born into status and privilege, giving up both to live the life of an adventurer in order to fight injustice. As he departed, the Doctor left Maid Marian, whom he had met in the Sheriff's dungeon, behind to be reunited with Robin. (TV: Robot of Sherwood)

The Doctor and Clara used a goo bomb to foil the Sibro's attempt to weaponise a Conlanian clock tower, (COMIC: Chime Time) orchestrated a ceasefire in a war between anthropomorphic cats and dogs by allying them against an army of alien fleas that planned to attack every planet in the universe, (COMIC: Once Bitten) and helped the World Brain find a new way of life after crash landing on its factory planet. (COMIC: Crash Landing)

While sightseeing on the HomeWorld, the Doctor saved a hospital from a missile, but was framed as the ringleader of various crimes by the Judge and locked up in the colony's asteroid prison until he exposed its darkest security measure. (PROSE: The Blood Cell)

The Doctor and Clara rescued the spaceship Genetrix from Whispies on Venus by using the ship's sifters to suck them up. (PROSE: Sunset Over Venus)

On Hoopoe, the Doctor acted as Clara's lawyer when she was arrested for walking on the ground by the Court of Birds. His attempt to convince them she and him weren't cats backfired when the owls accused them of being mice, but the Doctor had foreseen this and had recruited the native cats to attack the owls with makeshift wings, but ensured that the wings were too difficult to use properly, rendering them useless in the cats' pursuit of the owls. As he left with Clara in the TARDIS, the Doctor rewarded the cats with a box of canned tuna. (COMIC: The Court of Birds)

During one of Clara's breaks from the TARDIS, the Doctor became obsessed with the idea that a creature designed to hide was following him around and that everyone was similarly being followed. Visiting Clara for help in finding the hiders, by using the TARDIS telepathic circuits to pilot into her past. However, Clara got distracted by a phone call from her date, Danny Pink, and piloted them into his past instead, back when Danny was a child called Rupert and living in a care home. Finding a figure under Rupert's bed sheet, the Doctor had Clara and Rupert turn their backs to allow the being to walk out the room unobserved, leaving them unsure if it really was a creature or just another child playing a trick on Rupert.

Returning Clara to her date, the Doctor continued to follow his theory by trying to use a trace of Clara left in the telepathic circuits, ending up at the end of the universe where a time traveller named Colonel Orson Pink, Danny's descendant, had been trapped for six months. Intrigued by how following Clara's timeline led him to Orson, the Doctor returned for Clara and had them wait at the end of the universe for the night, believing it to be the perfect time to find out if the hiders were real. Finding a chance to confront the creature outside the ship, the Doctor sent Clara into the TARDIS and seemed to get a look at what he's been chasing before the atmospheric shell broke and Orson had to rescue him. As the Doctor was knocked out, and the TARDIS seemed to be under attack, Clara used the telepathic circuits to fly the TARDIS away.

Waking up to find Clara gone, the Doctor called out to her and inadvertently alerted his younger self to Clara's presence. Before he could investigate, Clara re-entered the TARDIS and made him promise to leave and not find out where they had landed. Afterwards, the Doctor returned Orson and Clara to their own times and, satisfied by what he had learned, underlined the word "Listen" that the creature had written on his chalkboard. (TV: Listen)

The Doctor planned to rendezvous with Clara at Coal Hill School, but instead arrived at a replica of the school on an unnamed planet, where Clara and Jeff Delobel, a French teacher, had been abducted by primitive aliens planning to infiltrate Earth via Coal Hill School. In order thwart the invasion, the Doctor told the aliens a tale of Earth's Guardian, informing them that he was the guardian, scaring the aliens off. (COMIC: The Monsters of Coal Hill School)

Resuming their travels, the Doctor and Clara helped stranded Seevith launch their ship, (COMIC: More Than Meets the Eye) and helped Professor Faster end the 17th century witch trials. (COMIC: Witch Work)

Returning to pick up Clara, and persuade her to away from a date with Danny Pink in favour of other travel destinations, the Doctor received a call from Madame Karabraxos, who requested he free the Teller and its mate from the Bank of Karabraxos, as he had done on the day she met him. Realising the ramifications of this request, the Doctor built up the identity of "the Architect", using this identity to stage a bank heist for him to commit, with the assistance of Clara, an augmented human named Psi, and a shape shifting mutant human named Saibra.

Using memory worms to erase the plan from their minds and prevent the Teller from alerting the young Karabraxos, the Doctor and Clara found themselves already in the Bank with their accomplices, their last memory being the TARDIS phone ringing.

Receiving instructions from the Architect on their location, objective, and the Bank's security system, the team infiltrated the Bank. Entering a safety deposit box, "Team Not Dead" - the Doctor's name for the assembled team - set of a dimensional shift bomb into a service corridor, where the team found a briefcase containing six teleporters disguised as atomic shredders.

Seemingly losing Saibra and Psi to the shredders when the Teller locked onto them, the Doctor figured out that time travel was involved with the heist plan when a perfectly-timed solar storm unlocked the Bank's vault. Retrieving what the Architect had promised Psi and Saibra as payment, the Doctor and Clara were caught by the Teller and delivered to the bank manager, Ms. Delphox. After Delphox left them to be executed, the Doctor and Clara were saved by Psi and Saibra, who revealed the true nature of the "shredders".

Venturing into the Bank's private vault to find his and Clara's reward, the Doctor instead found Director Karabraxos, and discovered that Delphox, as well as a majority of the bank's staff, was an exact clone of Karabraxos. Seeing Karabraxos' hatred of her own clones caused the Doctor to have an epiphany on the identity of the Architect, and he gave his phone number to Karabraxos as she fled from the solar storm about to hit the Bank. Subjecting himself to the Teller's powers, the Doctor regained his lost memories and realised the true objective of the bank heist. Freeing the Teller and its mate to a place to live in solitude, the Doctor then parted ways with Psi and Saibra, giving them their rewards, and returned Clara home for her date. (TV: Time Heist)

The Doctor and Clara were later pitted against the Wyrresters during their second attempt to invade Earth, with the Doctor also travelling back to ensure the failure of their first attempt and Clara briefly switching bodies with a Wyrrester before they were defeated. (PROSE: The Crawling Terror)

The Doctor and Clara were left to the mercy of sand piranhas while chained to posts on a desert planet, (TV: The Caretaker) had a dinner date in 1937 Berlin, (TV: Kill the Moon) rendezvoused with fish people, (TV: The Caretaker) were saved from an Aaraanandal slime beast by a survivor of the 22nd century Dalek invasion named Simon, (PROSE: When the Wolves Came) outran soldiers to escape in the TARDIS, (TV: The Caretaker) and saved a small village from a Cephla at Christmas. (COMIC: Gift Snatched!)

Planning to visit Eden 2, the Doctor was joined by a reluctant Clara, after she phoned him to drop her off at work after she overslept. When the duo arrived, they found the under assimilation by the Vladlack, but it turned out that the planet was a trap, to lure in and arrest invaders of planets. Fearing that innocents could be inappropriately punished, the Doctor set up a warning beacon around the planet, then dropped Clara off at Coal Hill School. (COMIC: Freeze)

Meeting Danny and Courtney
Discovering a Skovox Blitzer near Coal Hill School, the Doctor went in "deep cover" as the school's temporary caretaker to dispatch of the killer robot, much to Clara's dismay.

Initially planning on using chronodyne generators to send the Blitzer into the future, the Doctor's plan was accidentally foiled by Danny Pink; Danny had seen the Doctor act suspiciously and believed the devices were of malicious intent, deactivating some. As a result, the Blitzer was sent a short time into the future, rather than centuries. After Clara introduced him as her boyfriend, the Doctor took a dislike to Danny as he was a former soldier and feared he wasn't good enough for Clara. He changed his plan to using a communication device to make the Blitzer think the Doctor was its superior.

Rather a few days, the Blitzer returned during the next evening; to the Doctor's surprise, Danny used his military training to help keep the Blitzer occupied, allowing him to repair the malfunctioning device. After successfully commanding the Blitzer to deactivate with Danny's help, the Doctor took into space and ejected it from the TARDIS, taking Clara's troublesome pupil Courtney Woods with him after she discovered his identity, deciding that there was no harm in having Courtney tag along as a travelling companion, (TV: The Caretaker) but didn't see anything special in her. (TV: Kill the Moon)

Further adventures with Clara
The Doctor and Clara travelled to the planet Isen VI so that Clara could practice skiing for a school trip. Although the Doctor remembered it as a very cold and snowy planet, they found it had been converted to a warm and tropical paradise. After rescuing Clara from monkey-like creatures, the Doctor found an artificial leaf, which led to him and Clara being accused of trespassing by the planet's owner, Kano Dollar. The Doctor discovered that as a result of the planet's manipulation, a global cataclysm was imminent, but Dollar refused to listen. The Doctor and Clara rescued two workers from an underground earthquake with the TARDIS, and moved to a cavern beneath the tower where he set about investigating a Gallifreyan signal. Finding a giant terraformer that had fused with a ship underground, they watched as a Hyperion called Rann-Korr emerged and proclaimed that the universe would fall.

The Doctor released the ship's coolant gases, allowing him and the others to escape to the TARDIS. He explained that Rann-Korr's reanimation was a result of the terraformer's work, and conceded he had no plan to defeat him. They returned to the surface and made plans with the workers. The Doctor returned to confront Rann-Korr in a last stand. As Rann-Korr prepared to kill the Doctor, the terraformation was reverse-engineered, returning the area of Isen VI around him to its original icy state. The Doctor escaped in the TARDIS, and Rann-Korr was extinguished in the cold. He and Clara bid farewell to the workers and left. (COMIC: Terrorformer)

Discovering that a group of aliens were going to turn a planet of anthropomorphic pink hippopotami into stone, the Doctor intercepted the aliens at the early stages of their invasion and led them to ancient Egypt, where they petrified a large cat-like alien, creating the Sphinx and getting crushed in the process. He and Clara then returned to the planet of the anthropomorphic pink hippopotamuses to reverse the petrified effect. (COMIC: Petrified)

While Clara was having her portrait painted by Leonardo da Vinci in 1505, the Doctor received a summon to 2315 India from an old acquaintance of his, Tiger Maratha, who foresaw a timeless evil. The Doctor and Clara arrived in 2315 to find he had been killed and drained of life, and along with Tiger's daughter Priyanka were confronted by police who attempted to arrest the Doctor. Escaping capture, Priyanka told the Doctor and Clara that Tiger had worked for a group known as the Family Scindas. The Doctor, Clara and Priyanka travelled to the Scindas' ancestral home to find information, however the Doctor stumbled through a dimensional door into 1825 India, where he was attacked by a demon but rescued by renegade Amazon Rani Jhulka. The Doctor and Rani found a necro-cloud harvesting the spirits of the dead, and then attacked by more of the demons. Before they could be overpowered by the demons, the TARDIS arrived, Priyanka having unintentionally activated the telepathic circuits. She told the Doctor Clara had been taken by the demons.

Back in 2315, the Doctor, Priyanka and Rani found a final recorded message from Tiger made before his death, in which he explained he had collected three of the four mythic swords of the goddess Kali for the Family Scindas and had a premonition of evil over the swords. The Doctor was then summoned to see Chandra Scindas, the patriarch of the Scindas family. The Doctor deduced that they were beings known as the Kaliratha, putting themselves throughout time and space and Hindu mythology. Chandra revealed he had Clara hostage, ready to be burned by the Exodus rocket, forcing the Doctor to agree to find the fourth sword of Kali for them. The Doctor, Priyanka and Rani collected the fourth sword and returned to Chandra, who revealed he had used Clara as a host for the resurrection of Kali. Priyanka took control of the rocket while the Doctor battled with Kali. The Doctor revealed he hid his sonic screwdriver in the fourth sword, so that Kali unwittingly freed the evil spirits from her and released Clara's body, while Rani killed Chandra. The Doctor, Clara, Rani and Priyanka then attended a festival in Mumbai. (COMIC: The Swords of Kali)

While attempting to hang flowers on the exterior of the TARDIS, the Doctor was spooked by a future Clara and fell out of the TARDIS into the orbit of an asteroid. When Clara's attempt to avert the crisis ended up causing it, the TARDIS was able to save the Doctor by creating a time field around him. (PROSE: A Long Way Down)

The Doctor and Clara turned Captain Ratlett's crew against him and showed them a better life, (COMIC: The Wheelers) were almost consumed by robotic bananas for stealing food from the moon Luna Schlosser, (COMIC: Five a Day) and saved the Cloud City of Mirmi 24 from being eaten by an alien snake. (COMIC: The Very Hungry Snake)

After stopping a hostile invasion in the future, the Doctor travelled to UNIT HQ, where he had just been in time to shut down a Void portal. The Doctor came into conflict with the Fractures, natives of the Void that possessed humans, who believed they had to drag anyone mark with Void stuff into the Void to protect reality from unravelling. The chaos was started by a UNIT scientist from an alternate Earth, Paul Foster, who wished to be with a version of his family. Recruiting UNIT, Kate Stewart and the Fosters' help, the Doctor and Clara opened the Void, drawing the Fractures back inside and freeing their victims. At Clara's insistence, the Doctor allowed the alternate Paul to join his family in their universe, knowing the Fractures were entirely out for him now. (COMIC: The Fractures)

Preventing a bad future
After visiting an uninhabited world that lacked development in any way, Clara asked the Doctor about Marinus, but he did not remember the planet. That night, as he slept, the Doctor worked out that Clara was up to something, and woke up to find Clara missing and the TARDIS in 1923 Paris.

Looking for Clara in a café, the Doctor ran into his two previous incarnations, who were also heading to meet their respective companions. When the three Doctors barged into the café to confront each other, Clara, Alice Obiefune and Gabby Gonzalez explained that moments before they had entered a version of Gabby from the future, who had warned them of the plan devised by a future "alternate" version of the Twelfth Doctor. The future Twelfth Doctor had used a continuity bomb to make his timeline concrete, and had then returned the Doctors to their own timelines, erasing their memories of the events. The alternate Doctor planned to rise the Voord on Marinus to be a new race of Time Lords and to conquer the universe. Alice had been killed as she fled through his domain, and Gabby had been sent back in time by a Weeping Angel which had grown from the Eleventh Doctor's pack of comics. Realising that the picture of the three meeting still existed, they decided that going to Marinus was still part of the new timeline, and the three left Paris.

On Marinus, the Doctors posed for the picture and purposefully fell into the continuity bomb, where they chose the timeline where the Eleventh Doctor had stayed in the reality where all time occurred at once, as Marinus still existed in that timeline. There, they discovered the crashed Dalek ship which was where the Voord had stolen the technology to create their pocket universe. The Twelfth Doctor convinced the Voord that he was his alternate self, and joined with their hive mind. There, as he distracted all of the Voord subjects with thoughts of ponies, he encountered his alternate self, and the two fought within the mindscape.

Realising that his alternate self was too powerful to take on alone, the Doctor brought his other selves and their companions into the hive mind. They distracted the alternate Doctor as the Eleventh and Tenth Doctors broke down the Voord city's shields and connected the reprogrammed Dalek weapon to the city's dimensional shielding. The Doctors gave their alternate self, now trapped within the hive mind with them, the option to either let his city fry or use the technology in the city to revert the Voord to their pre-Time War state. Convinced by Clara, the alternate Doctor agreed to the latter, even if it meant that he and the timeline he created would cease to exist.

Seeing the new Marinus, populated by large cities and primitive Voord, the six returned to Paris, and considered eating at the café, until they saw the Ninth Doctor and Rose Tyler seated inside, with the Twelfth Doctor saying that the Ninth Doctor had been left out of the plot due to there being no timeline that even the continuity bomb could find where he was anything but "fantastic."

As the groups departed, the Twelfth Doctor questioned his previous selves decision not to wipe their companions' memories, and noted to Clara that, while he would also never do such a thing to her, she and himself would slowly forget the event as well, as they had both learned about their own futures. As their memories began fading, Clara asked if the Doctor ever wanted to become his previous selves again, much like how she sometimes wished to be a teenager again. Though he avoided answering the question, the Doctor noted that his two predecessors "lived like they had limited time," and that staying in the past was not for them, and that they had to move forward into the future. (COMIC: Four Doctors)

Fallout with Clara
At Clara's urging, the Doctor took her and Courtney to the Moon in 2049, so that Courtney could be the first girl on the Moon to bolster her confidence. Landing instead in a recycled space shuttle heading for the moon, the Doctor was informed by Captain Lundvik that the moon had inexplicably gained mass, and that she and her crew were going to use nuclear bombs to dispose of the additional mass.

Investigating a disused mining base from a previous mission, the Doctor, his companions and the astronauts found corpses preserved in webs and research that suggested that the moon was disintegrating. Soon after, the group was attacked by a spider creature, which Courtney killed with washing up equipment, but not before Lundvik's crew were killed.

Taking a scared Courtney back to the TARDIS, the Doctor voiced his uncertainty of the Moon's fate to Clara, calling it a "grey area" in time. Exploring the moon's surface for the reason behind the deterioration, the Doctor, Clara and Lundvik discovered a horde of spider germs beneath the Moon's surface, as well as amniotic fluid, prompting the Doctor to investigate beneath the Moon for answers.

Scanning the Moon's core, the Doctor discovered that the Moon was, in fact, an egg for an ancient creature that was hatching. Reuniting with Clara and Lundvik after the shuttle and the TARDIS fell into a canyon, the Doctor informed them of his discovery after establishing contact with Courtney's phone. While Clara and Lundvik argued about killing the creature for the sake of the Earth, the Doctor had Courtney bring the TARDIS to him via DVD, deciding that it was not his place to decide the Moon's future, and left in his TARDIS for Clara, Lundvik and Courtney to decide on behalf of humankind.

After Clara chose to spare the creature, despite humanity voting for its death, the Doctor returned for the three women, taking them to a beach on Earth to see the creature hatch and the Moon harmlessly disintegrate in Earth's atmosphere. Confirming that the sight of the moon hatching kick started the humans pioneering into space, and seeing the creature hatch a new egg with same mass as the old Moon, the Doctor returned Courtney and Clara to Coal Hill School.

However, Clara, angered by the position the Doctor had put her in, asked the Doctor if he had known the egg was harmless, which the Doctor confirmed as true. Tired of the Doctor's apathy, Clara argued with the Doctor about how he had almost caused her to kill an unborn creature. He defended that he was helping the human race by not playing a part in this choice. However, Clara had been deeply hurt by the Doctor's constantly patronising attitude toward humanity, and now that he had demonstrated it with her, Clara felt reduced to the likes of an idiot in the Doctor's eyes. With tears rolling down her face, she told him to leave and not return for her. The Doctor was left stunned by her reaction and immediately took off. (TV: Kill the Moon)

Time alone
Spending some time away from Clara, the Doctor joined a crew of six travellers, including a young Geoffrey Chaucer, on a journey to the church at Santiago de Compostela to avoid the plague. At the church, one of the travellers gave birth, then the group were attacked by life-feeding aliens disguised as wooden skeletons. However, the aliens recoiled in horror upon seeing the new baby. The Doctor realised the church was actually the aliens' disguised spaceship, and he and the crew escaped as the ship took off and away. The Doctor explained to Chaucer that the baby, representing new life, was enough to frighten away the death-conquering aliens. (PROSE: The Mercy Seats)

Responding to a distress call from Dalek prisoner aboard a Cyber Ship, the Doctor discovered that the Daleks, Cybermen and Sontarans were searching for the Orb of Fates to gain control of a powerful Time Lord weapon called the Starbane. The Doctor joined forces with the Dalek prisoner, who had been altered by the Cybermen and "seen the light" and nicknamed it "Lumpy". Following the Orbs' Artron energy to the Cyber-tombs of Telos, the Doctor restored a minimum of Lumpy's power, not trusting the Dalek to allow full use of its power, and sent him to retrieve the second Orb while he studied the first in the TARDIS.

As Lumpy descended into the depths of Telos, the Doctor discovered that the Orbs were powered by temporal energy; The only way to destroy them was to create a temporal implosion. Leaving Telos for Sontar, the Doctor and Lumpy were trapped in a stasis field by