Peri Brown

Perpugilliam "Peri" Brown (born 1966) was an American college student who accidentally joined the Fifth Doctor during his visit to Lanzarote. She then elected to remain with him for the rest of her vacation time. She remained with the Doctor after his regeneration into the Sixth Doctor, but found it harder to get along with him because of his now brash and arrogant persona.

Peri was separated from him by the Time Lords so that they could cover up the Ravolox conspiracy. According to the Master, Peri was wed to King Yrcanos, but that was just part of the truth. As it turned out, there were several future versions of Peri's life due to interventions of various Time Lord factions. One of these versions of Peri eventually rejoined the Sixth Doctor on his travels.

In the "primary" version of events, Peri was killed by Yrcanos (who was used as an assassin by the Time Lords) after her body had been taken over by Kiv. She apparently survived, going on to marry Yrcanos. This was later shown to be false, as the Valeyard has masterminded the change of Peri's fate to further his trial against the Doctor.

Her unusual name meant, according to her, "she who lives in the hills". (AUDIO: The Bride of Peladon)

Early life
Peri was born to Paul and Janine Brown in 1966. Her parents were married on 21 November 1962 and she was their only child. (AUDIO: Peri and the Piscon Paradox) She was raised in Fell's Point, Baltimore, Maryland, where her mother lived until her death. Her parents and her stepfather were all archaeologists. She travelled around the globe as much as she enjoyed a stable life in Baltimore. Her best friend was Kathy Chambers. In her youth, she was attracted to Kathy's elder brother, Nate. (PROSE: Blue Box, AUDIO: The Reaping)

As a girl, Peri used to read the comic book Swamp Thing. (PROSE: Players)

She was raised Baptist but did not consider herself to be religious. (AUDIO: The Council of Nicaea)

During her childhood, Peri read about the Philadelphia Experiment, which concerned the disappearance of the USS Eldridge in October 1943. (AUDIO: The Macros)

When she was a child, Peri went hunting with her dad. (AUDIO: Peri and the Piscon Paradox)

When Peri was thirteen, Paul Brown died in a boating accident. (PROSE: Synthespians™) Janine married Professor Howard Foster, who already had two children. One account claimed Foster abused Peri sexually and Janine never forgave him. (PROSE: Shell Shock)

In high school, Peri was a "straight A'" student. She studied Christopher Columbus in great detail. (AUDIO: Trouble in Paradise) Her first boyfriend was called George Stewart, who she nicknamed "Curious George". (AUDIO: Peri and the Piscon Paradox)

Peri could not sing. (AUDIO: The Macros)

She had a dog called Whiskey. (AUDIO: Peri and the Piscon Paradox)

She had an aunt who was still alive in 2009. Mona lived in a trailer park and collected golliwogs, which she ordered from England. She seemed to dress in a manner reminiscent of the Sixth Doctor. (AUDIO: Peri and the Piscon Paradox)

At some point Peri lived in a college town in Pasadena. She described that it was an easy weekend drive from Pasadena to Las Vegas, a place she'd only been once. (PROSE: Something Borrowed)

First meeting
Peri studied botany at California State University, and was in her first year when she met the Doctor (TV: Timelash, AUDIO: The Mind's Eye, AUDIO: Peri and the Piscon Paradox) and had an interest in archaeology fueled by her parents' passion for the subject. (PROSE: Blue Box) Around this time, she was dating a boy called Davey Silverman. (AUDIO: Peri and the Piscon Paradox)

On a vacation to Lanzarote on 9 May 1984, (AUDIO: The Reaping) Turlough saved her from drowning, and she subsequently met the Fifth Doctor. The shape-shifting android Kamelion, controlled by at the time, assumed the form of Peri's stepfather, Professor Howard Foster, and later that of the Master himself. He then seized control of the TARDIS to take her to the planet Sarn to meet the real Master. After the destruction of Kamelion and the defeat of the Master, Turlough returned to his homeworld, Trion, and Peri joined the Doctor on his travels. (TV: Planet of Fire)

After Lanzarote
Immediately after the events on Lanzarote, the Doctor took Peri to Astroville Seven, a 31st century space station where she saw many different alien races and got a taste of what travelling in the TARDIS was like. While on the station, they got caught up in an epic quest for the legendary treasure of Rovan Cartovall. (PROSE: The Ultimate Treasure)

On early 21st century Mars, the Doctor and Peri arrived inside the final resting place of the Ice Warrior, Izdaal. After discovering a team from the Argosy enter the tomb at the same time, the Doctor, Commander Lee Forbes and Pilot Susan Roberts travelled to the centre, where the Ice Warriors that guarded the tomb awoke from protecting Izdaal's body. While Peri went to the Argosy to pick up a survival suit, Sub Commander Sstast went to the Argosy to retrieve Peri and the others, but was knocked out by Paul Webster to create a clone army augmented by Ice Warrior biology and technology.

As the Argosy took off, it was fired at with missiles from the tomb, but the Doctor prevented the Ice Warriors from finishing them off. The Argosy crashlanded and Peri, Paul and Tanya Webster returned to the tomb of Izdaal. The Doctor and Tanya were held hostage by Paul, but Lord Zzaal took the place of the Doctor, sacrificing himself to the "Red Dawn" to allow Sstast to fire a sonic charge at Paul. The Doctor and Tanya fled from the attack and headed back to the tomb. (AUDIO: Red Dawn)

She helped a group of human colonists beset by the carnivorous Farakosh (AUDIO: Exotron) and pretended to be a waitress in an alien restaurant to figure out why three different gourmets wanted to kill the Doctor. (AUDIO: Urban Myths) The pair also ran into the Master in 1880s California, (PROSE: A Town Called Eternity) met an Essex priest who was hiding radioactive alien bodies in his church crypt in 1953 (PROSE: The Canvey Angels) and met the Brigadier before encountering a race known as the Arix, who lived their lives in the span of one Earth day. (PROSE: A Life in the Day)

While visiting a quiet planet, Peri was badly injured, prompting the Doctor to take her to Karn in order to save her life. After her injuries were treated, she was abducted by Morbius, but she was able to trick him into putting her into an escape pod by claiming that she had an infectious skin condition, resulting in her arriving on the planet Sylvana. She later developed into a guerrilla leader against Morbius's regime on Sylvana, eventually rejoining the Doctor after he became the general of an army of Draconians, Sontarans, Cybermen, and Ice Warriors against Morbius. (PROSE: Warmonger)

With Erimem
After travelling alone with the Doctor, they met Erimem, a princess of ancient Egypt, who joined them in the TARDIS. (AUDIO: The Eye of the Scorpion)

The Doctor intended to drop Erimem off on the Braxiatel Collection so that she could have an education. Instead they arrived in 17th century Paris. There, Peri was kidnapped by the Duke of Buckingham, who believed that she was Queen Anne (a look-alike of Peri). After this adventure, the Doctor invited Erimem to join them travelling in the TARDIS. (AUDIO: The Church and the Crown)

By this time, Peri had found one of Leela's skins in the TARDIS wardrobe and considered wearing it on one occasion. (AUDIO: No Place Like Home)

Peri helped teach Erimem to read English. (AUDIO: The Axis of Insanity)

The three battled Jarra To in the Axis, (AUDIO: The Axis of Insanity) defeated the Great Old Ones in the Himalayas (AUDIO: The Roof of the World) and prevented the Khellians from preying on a vulnerable Earth colony. (AUDIO: Three's a Crowd)

The trio next visited Nicaea in 325 AD, where they found themselves in the middle of a religious conflict. (AUDIO: The Council of Nicaea)

Peri and Erimem were stranded in 15th century Earth when the TARDIS separated them from the Doctor, having to work as serving wenches. They were eventually reunited with the Doctor after coming in to conflict with William Shakespeare. (AUDIO: The Kingmaker)

Later, Peri and Erimen corrected a change to the timeline caused by the Doctor's former companion Tegan Jovanka. The three women proceeded to go out and get drunk afterwards. (PROSE: Graham Dilley Saves the World)

Peri grew exceptionally close to Erimem and hoped her feelings for Erimem were like those one had for a sister. (PROSE: Blood and Hope)

The Doctor, Peri and Erimem answered a distress call from the Ice Warrior prince and ambassador, Zixlyr in the 41st century. Zixlyr had blown up an explosive within his ship to smuggle a Xanthoid volataliser onto Peladon after his sister, the previous ambassador to Peladon, Alixlyr, had disappeared; he claimed he had been attacked by Arcturans and knew that if he entered Peladon through more conventional means, the volataliser would have been detected. As the ship began to fall towards Peladon, part of the ship's hull broke off, leaving the TARDIS around Peladon's orbit and making escape impossible. The Doctor, Peri and Erimem helped Zixlyr safely crash land the ship as it entered Peladon's atmosphere, crashing it into a forest. Zixlyr and Peri went to the citadel of Peladon, while Erimem took care of the Doctor as he recovered.

Peri discovered Zixlyr was going to set off his volataliser against the Peladonian royal family after discovering a message from Alixlyr on her memory hub, which warned not to trust the royal family and that something dark was at work in the citadel. Peri explained to Zixlyr that this didn't mean the royal family was responsible.

An explosion set off by the criminal Arktos and his accomplice, Elkin, had ripped apart the floor of the nearby mines, killing the miners inside. Within the wreckage, Erimem discovered a message in Egyptian hieroglyphs warning of the Osiran, Sekhmet, whom the Egyptians worshipped as a god. Upon realising the Osiran had killed Alixlyr, Peri rushed to Zixlyr to tell him and bring him to Sekhmet's trisilicate tomb.

The Doctor found a secret passageway leading to Sekhmet's tomb, where three of her four blood locks had been broken after she fed on the blood of three royal women, including Alixlyr and the newly-crowned King Pelleas' predecessor, Queen Elspera, and used the Aggedor to break down the door. Erimem offered her blood to Sekhmet, but had poisoned it with mandrake root that was inside her ring. Zixlyr grabbed onto Sekhmet and set the countdown on his volataliser. Zixlyr sealed the chamber, blowing himself up along with Sekhmet. The Doctor and Erimem escaped, but Erimem was still dying from her poison. Peri used the Time Lord biochemistry in the Doctor's blood to revive Erimem by performing a "very crude" blood transfusion on her.

King Pelleas proposed to Erimem, and she accepted. She parted company from Peri and the Doctor, staying behind to rule Peladon. The Doctor and Peri departed for the TARDIS, still in orbit around Peladon with the help of Alpha Centauri's ship. (AUDIO: The Bride of Peladon)

After Peladon
Soon after Erimem's departure, Peri and the Doctor went to the planet Grallista Social for a spot of relaxation, but found themselves in the midst of a viral decontamination effort by the Viyrans. (AUDIO: Mission of the Viyrans) Soon after this, Peri was intentionally separated from the Doctor on an unnamed world. During this separation, the Doctor travelled briefly with a tracer named Amy whom he helped find the Key to Time. Peri was reunited with the Doctor after his second attempt at finding the Key to Time concluded. (AUDIO: The Judgement of Isskar, The Chaos Pool)

Peri and the Doctor went to the village of Sair during the Middle Ages, where a young man named Tablibik used a form of magic to make her fall in love with him. The Doctor swiftly broke his spell. (PROSE: Fascination)

Peri then met a future version of herself in Los Angeles in 2009, whom she distrusted. She was aghast when she witnessed her older self seemingly execute a Piscon named Zarl, and after the adventure, whilst the TARDIS travelled towards Androzani Minor, contemplated how she wasn't sure if her relationship with the Doctor would ever be the same again. (AUDIO: Peri and the Piscon Paradox)

After contracting spectrox toxaemia and then getting accidentally involved in local politics on the twin planets of Androzani Major and Androzani Minor, Peri was abducted by Sharaz Jek. Upon her escape, she began to die from the disease. The Doctor saved her, but not having enough bat's milk, an antidote, to save himself, regenerated into a very different, new and unstable persona. (TV: The Caves of Androzani)

While in his mindscape during his regeneration, the Doctor told his former companion Nyssa that she would like Peri but then reconsidered, saying "or possibly not." (AUDIO: Winter)

Adventures with the Sixth Doctor
Peri immediately challenged the sixth incarnation to prove he was still the Doctor. He got her to believe it was still him despite his new face and personality. Despite having stabilised physically, he suffered initial personality and mental issues which caused him lapse into extreme paranoia. He tried to strangle Peri. He decided to exile himself on Titan III as punishment until he had attained appropriate humility, but soon got involved with stopping Mestor and his gastropods. On Titan III, he met another Time Lord, his old friend Azmael. (TV: The Twin Dilemma)

The Doctor and Peri worked to stop the Cybermen from trying to destroy Earth with Halley's Comet and save Mondas, which was destroyed by the First Doctor, and keep the Web of Time from being damaged by their carelessness. (TV: Attack of the Cybermen)

After the TARDIS ran out of Zeiton-7, the Doctor landed on Varos in the late 23rd century for more to resupply the TARDIS. The society on Varos nearly forced him to participate in their deadly "games" when he attempted to free those trapped in the Punishment Dome. The Doctor and Peri stopped Sil, the swindler behind the "games", and obtained Zeiton-7 for the TARDIS. (TV: Vengeance on Varos)

Tracing a time distortion to 19th century England, the Doctor and Peri found the Master and a female renegade Time Lord called the Rani working together for one of her monstrous experiments and for the Master's plan to accelerate Earth technology beyond its normal level. The Doctor sabotaged the Rani's TARDIS and had her and the Master thrown off into the Time Vortex. (TV: The Mark of the Rani)

When landing on Space Station Camera, the Doctor and Peri met Jamie McCrimmon, and learned that the Second Doctor had been kidnapped by the Androgum, Chessene. Together they foiled a Sontaran bid for time travel and that of Chessene, who wished to have the Second Doctor for her consort. Peri grew close to Jamie, even kissing him before leaving paths. (TV: The Two Doctors)

The Doctor and Peri accidentally became caught in a time corridor and arrived at Karfel, where the sinister Borad ruled. The Doctor, discovering that the Borad was in reality a scientist he had known named Megelen, stopped him from mutating Peri into a form biologically compatible with his own and, with the help of new companion H.G. Wells, sent the dictator through the Timelash. (TV: Timelash)

The Doctor and Peri went to the planet Necros, where the "Great Healer" was trying to kill him. The Great Healer was in fact Davros, who had arranged for the Doctor to be killed at a funeral home. Davros was eventually taken to Skaro to have a trial by the Dalek Emperor. (TV: Revelation of the Daleks) Afterwards, the Doctor took Peri to Blackpool, where they encountered the Celestial Toymaker. (AUDIO: The Nightmare Fair/PROSE: The Nightmare Fair)

Caught in a trap created by, she met the Seventh Doctor and Ace while she was travelling with the Sixth Doctor. The Seventh Doctor was melancholy when he saw her again, telling his younger self that he had never gotten used to time travel leading to his being reunited with old friends. However, Peri got along well with Ace. She was surprised that Ace referred to the Seventh Doctor as "Professor" but was amused when she referred to the Sixth Doctor as "Joseph," a reference to the musical Joseph and the Amazing Technicolor Dreamcoat. The events of the Master's trap were reverted by the First Doctor.

Afterwards, the Doctor and Peri, visited Bob Dovie at 59A Barnsfield Crescent in Totton, Hampshire on 23 November 1963. (AUDIO: The Light at the End)

Whilst in the TARDIS, Peri and the Doctor were contacted by the Eleventh Doctor who asked him to obtain an omniparadox for him, store it in the TARDIS for him as he would need to save the universe in the future. For this he sent them to the Santa Maria on 12 October 1492. When arriving they met Christopher Columbus; while the Doctor was impressed to meet him, Peri had studied him at school and was disgusted by him. Columbus showed him a member of the crew who was sick with TB. While the Doctor could cure him he said he wouldn't as he didn't want to alter history. Peri, upset by this, screamed that she wouldn't travel with him any more and went to pretend to throw herself off the ship, but she actually did fall off the ship.

Peri washed up on a nearby island and was captured by the Bovine Herd Leader who planned to use her fatty deposits to power his time machine. The Doctor and Columbus rescued her. Then the Bovine Herd Leader from the future appeared to try to tell the present version that their scheme wouldn't work. However, before he got the chance, Columbus tried to kill the Doctor. Peri screamed, which warned him, and Columbus' attack hit the time core of the Bovine's time machine. After getting back to the Santa Maria the Doctor and Peri collected the omniparadox after the Doctor explained that Peri was a key component of the omniparadox and that she was instrumental in the development of the United States of America that she knew. (AUDIO: Trouble in Paradise)

After the Doctor erroneously believed that Peri had been killed by the Sontarans in Sussex, England in 1872, he described as "the bravest of souls". (AUDIO: The First Sontarans)

After Blackpool
During a trip to the Gogglebox, the Doctor and Peri learned of the death of her best friend Katherine Chambers' father Anthony Chambers. They went to her home town of Baltimore, Maryland on 28 September 1984, where they met Peri's mother, Janine, and Kathy. They also learned that the Cybermen were at work converting dead people. Anthony, now a Cyberman, rose from the grave and attacked them. The Doctor tricked the Cyber Leader by taking him to Mondas. He left and found that Nate, Katherine's brother, had been brutally attacked and paralysed by Anthony. Peri, feeling the weight of all the deaths, decided to leave the Doctor after a teary goodbye. The Doctor returned to the Gogglebox and learned that there would be an explosion in Peri's house that would claim the lives of her mother and another. The Doctor rushed back to Earth, but arrived too late. After a sad reunion, Peri returned to the TARDIS, now with no family left on Earth. (AUDIO: The Reaping)

The Doctor and Peri arrived on a colossal spaceship and became separated after Peri fell through a ventilation shaft. The Doctor discovered that the ship's computer was planning to cause the Big Bang and avert man's creation into such a violent race. Before he could intervene, a Time Lord drew him, Peri and his TARDIS away and informed him that this event was always destined to occur. Angry at almost averting the existence of the universe, he and Peri took off. When asked where they were going, the Doctor commented that he was going to find the biggest library he could and study up on his history. (AUDIO: Slipback)

The Doctor and Peri visited a galactic fair and took part in a virtual immersion experience that played out as a fantasy. Peri became trapped, while the Doctor tried to convince her virtual self of the danger. An alien parasite using the name Mr Darcy asked Peri to marry him, knowing that if she accepted, he'd be able to take over her mind. The Doctor intervened, but fell prey to Darcy who had planned on taking him over from the very start. Peri woke up in the immersion room and supplied the system administrator – Crompton – with her own story to feed into the fantasy before returning to help the Doctor and defeat Darcy. (AUDIO: A Most Excellent Match)

Temporarily leaving
Peri soon became homesick for 1980s America. (PROSE: CHAOS) She left the TARDIS to pursue a life in New York City in 1985, though she grew frustrated at her job as a skivvy there and soon quit before gratefully rejoining the Doctor and Frobisher. (COMIC: Kane's Story)

With Frobisher
In the TARDIS, Peri and Frobisher were cleaning until they found an alien family in one of the rooms. When the Doctor refused to help them, Peri convinced him to help them. When the family left, the Doctor decided to go to their planet, Sylvaniar. (COMIC: Exodus)

As soon as they arrived, they were imprisoned. The Doctor was allowed freedom and after he defeated the Cybermen, he came back for them. When they left Peri discovered that her new travelling partner had mono-morphia. (COMIC: Revelation  / Genesis!)

At one point, Peri enjoyed a baseball match. (COMIC: Time Bomb) When she came back, she forced the Doctor on a diet. (COMIC: Salad Daze) When the TARDIS was invaded, Peri and Frobisher went to help the Doctor. However, they were separated in the memory vaults and Peri ran into the invader who took her form. She was rescued by the Doctor and Frobisher. (COMIC: Changes)

During a visit to Antarctopolis in 7214, the Sixth Doctor was kidnapped by the Autons, allied with the Master; Peri and Frobisher helped him escape. Eventually, Peri was kidnapped by a disguised Adam Mitchell, equipped with a vortex manipulator. (COMIC: Prisoners of Time)

Further adventures
After their series of stressful adventures, Peri was taken to the planet "Ravolox" to relax due to its similarity to Earth. However, they soon learned, to Peri's horror, that Ravolox was indeed Earth, moved light years from its original position. They met the primitive and dimwitted descendants of humans, whom they barely avoided being killed by multiple times, and faced the egotistical machine Drathro. The Doctor also learned Ravalox had been moved to protect secrets stolen from a higher species. The identities of those responsible remained a mystery. (TV: The Mysterious Planet)

On the planet Thoros Beta in 2379, the Doctor found the Mentors were back at work, trying to make deals with a savage king named Yrcanos through a failed attempt to manipulate his mind. After a failed attempt to probe his mind to see if the Time Lords had sent him to intervene on their behalf, the Doctor pretended to be on the Mentors' side and helped Mentor Kiv transplant his mind to a deceased Mentor. When Peri was in danger of having her mind overwritten by Kiv's, the Doctor was put under the control of the Time Lords before he could rescue her. (TV: Mindwarp)

Fate
Despite her apparent death, a number of varied fates for Peri existed, due to the temporal manipulations of various competing factions of Time Lords who each devised different ways to rewrite her life. According to a Time Lord who visited the Sixth Doctor and a version of Peri living in Los Angeles in 2009, no fewer than five versions of Peri ("at the last count") were removed from the timeline prior to the death of the original.

The original
Strapped to a bed and gagged, Peri was killed when Lord Kiv replaced her brain with his own, something the Doctor viewed during his trial. Kiv-in-Peri's body was subsequently killed by Yrcanos. (TV: Mindwarp) The Time Lord encountered in 2009 likened this to an assassination, strongly implying that it was orchestrated by the Time Lord faction behind the trial as a way of removing a potential witness who could contradict the altered recordings played at the trial. (AUDIO: Peri and the Piscon Paradox)

The warrior queen
A rival Time Lord faction, feeling the assassination unwarranted, pulled Peri out of that timestream at some moment before her death and allowed her to, as the Time Lords put it, "live out her days" (AUDIO: Peri and the Piscon Paradox) as a warrior queen alongside Yrcanos, as revealed to the Doctor at the conclusion of his trial. (TV: The Ultimate Foe) The Doctor was satisfied to know she would be happy, and initially left her to enjoy that life undeterred. (PROSE: Bad Therapy, AUDIO: Peri and the Piscon Paradox)

According to one account, later in his life, the Sixth Doctor visited Peri on Krontep often, on one visit bringing a "huge rabbit". (COMIC:The Age of Chaos) This Peri bore Yrcanos three children: two sons and a daughter, just as she had always wanted. (AUDIO: Peri and the Piscon Paradox) One was named Corynus. They had least three grandchildren, including Actis and Euthys. (COMIC: The Age of Chaos)

By the time the Sixth Doctor visited Krontep again, the two children had found it impossible to work together, as each thought that the other had made a pact with aliens, and Peri left the kingdom, vowing to not return until the twins could work together again. She watched the Doctor from afar during his visit, never revealing her identity. Despite this, the Doctor knew it was her and called out to her as he prepared to leave. (COMIC: The Age of Chaos)

Later, the Seventh Doctor would wrongfoot the Gwanzulum when their 'dead companions' included Peri, someone he knew was still on Krontep. (COMIC: Planet of the Dead)

Another account stated that Peri was later visited by an older incarnation of the Doctor when she was in her early forties. Still bitterly unhappy with the Doctor, she refused to reconcile with him, feeling resigned to her fate. (PROSE: Reunion) Yet another account suggested that, after encountering her on 1950s Earth, the Seventh Doctor returned Peri to her native time in the late 20th century. (PROSE: Bad Therapy)

A final account suggested that Peri and Yrcanos settled on Earth at some point after their marriage, with Yrcanos becoming a professional wrestler and Peri his manager. (PROSE: Mindwarp)

Home with memories wiped
Feeling that forcing Peri to spend her days with Yrcanos was a fate worse than death, a Time Lord president arranged for another permutation of Peri to be removed from the timestream and returned to Earth in the mid 1980s with all her memories of travelling with the Doctor erased, except for her first encounter. Although the president's intentions were good, this version of Peri faced great challenges over the next quarter century. After returning to the United States of America, she married her childhood sweetheart, who proved to be extremely abusive to her, ultimately injuring her so badly that she could not bear children and required reconstructive surgery to her face.

After this Peri decided that she wanted a job where she could help people. She became a relationship counsellor and, later, the host of the hit TV series Dr. Peri Brown: Worrier Queen. In her late forties, she reunited with the Doctor on an adventure that saw her interact with her younger self — she pretended to be an alien expert working for the government in order to protect the Web of Time, not revealing her future to her past self. She unintentionally appalled her earlier self by seeming to kill Zarl, despite the fact that he was actually the Sixth Doctor in a monster costume, and was teleported away rather than killed. Ultimately, she learnt about her other selves, and the Doctor apologised profoundly for how his people had tampered with her life. Offered a chance to travel with the Doctor again, she declined and returned to her life in Los Angeles in 2009. (AUDIO: Peri and the Piscon Paradox)

Mind parasite and further travels with the Doctor
Another version of Queen Peri, visited by the Sixth Doctor on Krontep, was revealed to actually have been Mandrake, the Doctor's childhood imaginary enemy that became a mind parasite, transferred to Crozier's computer when the Doctor was connected to the machine, and then to Peri's body instead of Kiv. Oblivious of the fact, Yrcanos died seven days after the wedding, having been poisoned by Mandrake. Then, Mandrake poisoned Peri's own body, wanting to force the Doctor to transfer his mind to the body of princess Dirani of Hurn.

Eventually, after swapping bodies with Peri, the Doctor managed to restore her real consciousness and save her life. Following this, Peri rejoined the Doctor on his travels. (AUDIO: The Widow's Assassin)

Together with the Doctor, she visited the Dalek-occupied Scotland in 2163 (AUDIO: Masters of Earth) and the College of Advanced Galactic Education, where they encountered the Rani in her new incarnation. She also gained an honorary degree in Botany. (AUDIO: The Rani Elite)

Other
The other permutations of Peri, and the reasons for their creation, were not specified by the Time Lord. (AUDIO: Peri and the Piscon Paradox)

Undated events
At some point, Peri was taken to the Black Archive by UNIT to have her record as a companion of the Doctor taken, her memories of the visit were subsequently erased and she was sent on her way. (TV: The Day of the Doctor)

Mysteries and discrepancies
During the Doctor's fifth incarnation, Peri spent a year as a guerrilla fighter while separated from the Doctor, who meanwhile headed a military organisation known as the Alliance (PROSE: Warmonger)

The length of time Peri spent with the Doctor was unclear. Some accounts  suggested her travels with the Doctor occurred over the space of months, whilst others stated that at least "a couple of years" had passed for her between her first encounter with Jamie McCrimmon and her second. (COMIC: The World Shapers) As noted above, she was also separated from the Doctor for as long as a year on one occasion (PROSE: Warmonger) and two years on another. (AUDIO: The Kingmaker)

BBV Productions
Using her actual English accent, Nicola Bryant played "Miss Brown" (who was never actually referred to by name on-screen), an obvious analogue to Peri, in three BBV Productions videos in the series: Summoned by Shadows, More Than a Messiah and In Memory Alone. Later videos in the series would make clear that the Stranger series did not take place in the Doctor Who universe and that Peri and Miss Brown had no connection with each other. Bryant also played Elenya "Ellie" Brown, the girlfriend of Colin Baker's character, TV weather forecaster Arnold "Arnie" Davis, in another BBV production, the non-Doctor Who The Airzone Solution.

Longevity
Counting audio and televised adventures together, Peri effectively shares the longest-serving companion title — both in terms of number of stories and recorded time — with Ace. As they are tied, the title essentially alternates as new stories are released. Her nearest rivals are Jamie McCrimmon, Charley Pollard and Nyssa. Of these, only Jamie and Nyssa appear to be in active use past 2010. Nyssa's appearances are considerably more frequent than Jamie's so she represents the only potential threat to Peri and Ace's record-breaking number of appearances.

While she clearly eclipses the amount of time Sarah Jane Smith has been seen or heard as a companion, Peri is easily outpaced by the character of Sarah, due to Sarah's latter-day appearances as a solo character.

American accent
While Peri is supposed to be an American, her English accent often slips and her American accent wanders between different regional accents. She sometimes uses phrases and pronunciations that Americans would not use, such as "lift" instead of the American "elevator".

Indeed, the Attack of the Cybermen DVD commentary maintained that it was mandated that Peri only use British slang to avoid confusing the audience. This may have worked for the British audience but, as Peter Davison pointed on on the DVD commentary for Planet of Fire, it had the opposite effect on American viewers. They could spot Bryant's fake American accent — or, really, any British actor's attempt at American — with ease. This was one of the principal reasons that Davison fought hard against adding an American companion to the show. This idiosyncrasy of language did not end with the TV series, as it can be heard in several audio dramas also.

According to Nicola Bryant on the DVD commentary for Planet of Fire, there was an active effort to cover up the fact that she was not, in fact, American. She recounted there how John Nathan-Turner insisted she use her American accent when making public appearances or appearances that could have been monitored by the press. At least during the recording of her earliest serials, like Planet of Fire, she was even required to use the American accent when she broke character between takes.

It's unclear how long this obfuscation lasted, but evidence for the subterfuge can be heard on a clip from Breakfast Time broadcast the day the first episode of The Twin Dilemma aired. During the interview, the interviewer asserted that as a "little girl in America" Bryant used to watch Doctor Who and dream of being a companion. Bryant, who used only a very mild English accent during the interview, failed to correct the interviewer or to even look as though the interviewer had made an error. Near the end of the 1984 production block — which is to say after the recording of Season 22, but probably slightly before its airing — Bryant gave a radio interview in which she used her natural British accent. (AUDIO: Doctor Who at the BBC Volume 3)

Relationship with her stepfather
The idea of Howard Foster sexually abusing Peri is one never considered by the production team on Planet of Fire and does not have resonance in audio and print literature beyond the novel Shell Shock. Nicola Bryant says that the idea, as envisioned by Fiona Cumming, Dallas Adams and her was to suggest that she and her stepfather had an appropriate but friendly relationship. Indeed, according to Bryant, Peri much preferred the company of Howard to that of her mother. (DCOM: Planet of Fire) However, the character of Peri (or at least one aspect of Peri) was still destined for an abusive relationship as revealed in AUDIO: Peri and the Piscon Paradox.

whoisdoctorwho.co.uk
The website whoisdoctorwho.co.uk had a list of sightings of the Doctor from which people had ostensibly been submitting to Clive, a conspiracy theorist character from the television story Rose.

An entry credited to Peri herself — evidently having access to early 21st century Earth's Internet — mentions that the Doctor had "walked into my life one day, and right out of it" and that she wanted to get back in touch with him.