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1->''"Time Lords have this little trick. It's sort of a way of cheating death, except... it means I'm gonna change. And I'm not gonna see you again. Not like this, not with this daft old face."''
2-->-- '''[[Characters/DoctorWhoNinthDoctor The Ninth Doctor]]''' explains regeneration to Rose Tyler, "[[Recap/DoctorWhoS27E13ThePartingOfTheWays The Parting of the Ways]]"
3
4This is the page for TheNthDoctor in its [[TropeNamers trope-naming]] and [[TropeCodifier trope-codifying]] franchise.
5
6Every time the Doctor regenerates, the character undergoes a radical change in characterization, costume, and personality. However, all memories and past experiences of past incarnations remain, along with a certain amount of character stability (they're always going to be quirky and altruistic and fight evil aliens), meaning the Thirteenth, Tenth and Fourth Doctors are the exact same person as the First Doctor and each other, despite looking and acting much differently. Personality is a combination of "nature" and "nurture" — one story said that "Although the aspects of their personality caused by "nurture" would not change, the "nature" contribution to their personality would."
7
8The mechanic was implemented back when Creator/WilliamHartnell was playing the First Doctor. Hartnell grew too ill to carry on acting and wasn't getting along with the current producers -- in fact, he’d nearly been fired a couple of times over the preceding year. A decision was made to let him retire and bring in Creator/PatrickTroughton for the role, and the writers decided that since the Doctor is an alien, he could change form into a new body if his current one was giving out. From there, the plot device has been modified into the go-to response for any actor wanting to depart from the role of the Doctor — kill off the current incarnation and regenerate them into the next actor, thus avoiding TheOtherDarrin (itself only invoked for the Doctor in multi-Doctor stories where an earlier incarnation's actor has already died; so far, this has only happened twice, and [[Recap/DoctorWho20thASTheFiveDoctors both]] [[Recap/DoctorWho2017CSTwiceUponATime times]] it was for the First Doctor).
9
10During the tenure of the First Doctor, observant viewers can note various plot developments involving the Doctor's consciousness being placed into the body of someone else — not all of which, strangely enough, were intended to write Creator/WilliamHartnell out permanently. [[Recap/DoctorWhoS3E7TheCelestialToymaker "The Celestial Toymaker"]], which has the Doctor phased out of existence for most of the story, was supposed to end with the Doctor being phased back into existence but in a different body, as there was strong pressure on Hartnell to quit around that time. [[Recap/DoctorWhoS3E9TheSavages "The Savages"]], which shows the Doctor having his life force drained from him, and then using a BatmanGambit and a SoulFragment to place his personality into a NobleDemon villain, wasn't intended as a way to replace Hartnell, since his contract wasn't up yet, but as a way to give him some time to work on another story[[note]]according to The Fact of Fiction article on "The Savages" in ''Magazine/DoctorWhoMagazine'' #505.[[/note]].
11
12As such, the eventual "regeneration" process in "[[Recap/DoctorWhoS4E2TheTenthPlanet The Tenth Planet]]" was the writers' second intentional choice for how to change the Doctor, and it's apparent from the episode that they weren't quite sure what they'd stumbled upon. The regeneration of the First into the Second is stated to be "a feature of the TARDIS" (rather than a biological process) and [[RippedFromTheHeadlines inspired by]] [[HigherUnderstandingThroughDrugs 1960s LSD culture]] in how the experience was supposed to permanently alter his mind. The regeneration from the Second to the Third is off-screen and forced upon him by the Time Lords, and marks the first time the new Doctor was shown in his predecessor's costume. The regeneration from the Third to Fourth benefited from a UsefulNotes/{{Buddhis|m}}t producer, Creator/BarryLetts, who [[RuleOfSymbolism made a connection with Buddhist teachings on transience and reincarnation and decided to exploit this]], and marks the point where regeneration is explicitly linked to the death of the old body.
13
14Given the unique nature of ''Doctor Who'', it is one of the few (perhaps the only) productions in which different "Nth Doctors" can interact. Due to the Doctor being a Time Lord, thereby able to travel in time, the different incarnations [[MyFutureSelfAndMe interact]] from time to time, usually during [[MilestoneCelebration/DoctorWho special anniversary storylines]]. There have also been several other characters (mostly Time Lords) who have also undergone regeneration or similar changes.
15
16The concept of regeneration has been credited for ''Doctor Who'''s [[LongRunners long-runner status]]. As explained by showrunner Creator/StevenMoffat, the introduction of a new lead actor provides the series with an excuse to undergo a "soft reboot" or "relaunch", and indeed even when the producer and writers remain the same, the arrival of a new Doctor often results in a new feel for the show and new types of storytelling.
17
18Certain Expanded Universe works have very occasionally implied or demonstrated that Time Lords are capable of regenerating into different body plans than the usual HumanAlien one. The ''ComicBook/DoctorWhoTitan'' Fugitive Doctor miniseries states, however, that at least during certain periods, "establishment" Time Lord culture viewed non-humanoid regenerations with [[FantasticRacism hatred and disgust]], to the point of attempted mass murder.
19
20'''In the words of River Song — ''spoilers!'''''
21
22[[foldercontrol]]
23
24[[folder:The Doctor]]
25As of 2023, [[Characters/DoctorWhoDoctors the Doctor]] has been played (as the lead role, see notes below) canonically by fifteen actors. Note that the canonical "numbering" of the Doctors does not match up with the number of times the Doctor has regenerated. This is because the War Doctor was {{retcon}}ned into the cycle situated between Eight and Nine especially for the [[http://en.wikipedia.org/wiki/The_Day_of_the_Doctor#Broadcast 50th Anniversary]], and the Tenth Doctor managed to regenerate twice by cheating the system. Interestingly enough, Fourteen is also played by David Tennant and thus shares the same face as Ten, but qualifies as a separate incarnation.\
26
27The following actors have portrayed the Doctor:
28* '''[[Characters/DoctorWhoFirstDoctor 1st]]''' -- Creator/WilliamHartnell (1963-1966)
29** The Doctor's ailing health, mirroring the production difficulties caused by William Hartnell's [[https://en.wikipedia.org/wiki/Arteriosclerosis arteriosclerosis]] (RealLifeWritesThePlot in action), caused his first-ever regeneration in the final moments of [[Recap/DoctorWhoS4E2TheTenthPlanet "The Tenth Planet"]].
30* '''[[Characters/DoctorWhoSecondDoctor 2nd]]''' -- Creator/PatrickTroughton (1966-1969)
31** Regenerated off-screen as a punishment after the Time Lords found him guilty of stealing the TARDIS and breaking the law of non-interference between [[Recap/DoctorWhoS6E7TheWarGames "The War Games"]] and [[Recap/DoctorWhoS7E1SpearheadFromSpace "Spearhead from Space"]]; the actual process of his regeneration was depicted in the comic strip, "The Night Walkers".[[note]]Jon Pertwee had not yet been cast when the regeneration sequence was filmed, so he could not appear as part of it.[[/note]]
32* '''[[Characters/DoctorWhoThirdDoctor 3rd]]''' -- Creator/JonPertwee (1970-1974)
33** Regenerated due to radiation poisoning caused by the caves of Metabelis III in [[Recap/DoctorWhoS11E5PlanetOfTheSpiders "Planet of the Spiders"]]; amazingly, the Doctor was able to go on for three years (in in-universe time, not real time), lost in the Time Vortex, before regenerating.
34* '''[[Characters/DoctorWhoFourthDoctor 4th]]''' -- Creator/TomBaker (1974-1981)
35** Regenerated after suffering a long drop off of the Pharos Project radio telescope in [[Recap/DoctorWhoS18E7Logopolis "Logopolis"]]; this regeneration required help from the Watcher (a one-off "in-between" entity that has never been seen since), and the result was so difficult a regeneration that the Doctor was forced to put himself in stasis for some time in [[Recap/DoctorWhoS19E1Castrovalva "Castrovalva"]].
36** Tom Baker also portrayed the Curator, an ambiguous figure who '''might''' be a future Doctor, in [[Recap/DoctorWho50thASTheDayOfTheDoctor "The Day of the Doctor"]] in 2013.[[note]]The expanded franchise, in particular Titan Comics' comic book series, has definitively identified the Curator as a future Doctor, but this has yet to be confirmed on screen.[[/note]]
37* '''[[Characters/DoctorWhoFifthDoctor 5th]]''' -- Creator/PeterDavison (1981-1984)
38** Regenerated due to contracting Spectrox Toxemia (caused by exposure to raw spectrox) in the Spectrox Mines of Androzani Minor in the first scenes of [[Recap/DoctorWhoS21E6TheCavesOfAndrozani "The Caves of Androzani"]]. His regeneration was at the end of the serial, and was only necessary due to... a long story. Basically, he and Peri both contracted poisoning, the Doctor spent a good deal of the episode trying to get milk from a Queen Bat (as the milk was the only known cure for the condition), and when he finally ''did'' get enough milk for Peri and him, one of the vials spilled open. The Doctor chose to give the remaining vial to Peri, and was forced to regenerate in the most spectacular fashion ever achieved in the classic series. However, the resulting change left the Doctor unstable, leading to him attacking Peri soon after the change, which led to him becoming TheAtoner for the rest of the story.
39* '''[[Characters/DoctorWhoSixthDoctor 6th]]''' -- Creator/ColinBaker (1984-1986)
40** Regenerated in TheTeaser of [[Recap/DoctorWhoS24E1TimeAndTheRani "Time and the Rani"]], due to unknown injuries received beforehand. There's a lot of official FixFic about that one, the most notable one being in AudioPlay/BigFinishDoctorWho's ''[[Recap/BigFinishDoctorWhoSpecialTheLastAdventure The Sixth Doctor: The Last Adventure]]'', which retcons the opening of "Time and the Rani" such that the lasers shooting at the TARDIS in that scene are the direct cause of the regeneration, and the reason for the regeneration is a HeroicSuicide due to... another long story: The Valeyard (see below) has hatched an AssimilationPlot to replace every Time Lord that has ever existed with himself, starting with the Sixth Doctor, which leaves the Doctor trapped in the Matrix, alone, powerless, and scheduled for death. The Doctor, having run out of time and solutions, learns that the lynchpin to the Valeyard's plans is specifically the Sixth Doctor's mind, thus that regenerating will foil his conquest and save the entire Time Lord race. He therefore sends a mental signal to himself in the past, subtly influencing himself into (this would be the opening scene of "Time and the Rani") deliberately piloting the TARDIS to the planet Lakertya to be shot down by the Rani's laser beams, laced with radioactivity from the planet which he knows is fatal only to Time Lords. On TV, the Sixth Doctor's regeneration was a case of RealLifeWritesThePlot as producer Creator/JohnNathanTurner was forced to fire Baker (whom BBC brass had determined was unpopular with viewers) in exchange for a series renewal. Baker, understandably, refused to return to film a regeneration story, and as a result the producers were forced to FakeShemp Sylvester [=McCoy=] as the Sixth Doctor briefly.
41* '''[[Characters/DoctorWhoSeventhDoctor 7th]]''' -- Creator/SylvesterMcCoy (1987-1989 and 1996 TV Movie)
42** Yet another long story: in [[Recap/DoctorWhoTVMTheTVMovie the TV movie]], as soon as the Doctor hastily steps out of his TARDIS in UsefulNotes/SanFrancisco, a Chinatown gang instinctively guns him down. A gangster named Chang Lee then takes the Doctor to the hospital. There, the staff x-rays the Doctor. His bullet wounds are actually [[MadeOfIron minor]], but the doctors mistake his bicardial cardiovascular system for an x-ray double-exposure and his double-heartbeat for deadly fibrillation. They then try to "save" his life, but his anatomy causes a surgeon to literally probe the Doctor to death. Since the Doctor is under the effects of anesthesia, his regeneration takes place hours after he dies, and as the Eighth Doctor he is left with temporary amnesia afterwards. This has led to some NeverLiveItDown for Eight — being stricken with amnesia for most of his only on-screen story means in books and audio dramas he has a habit of winding up in such situations again.
43* '''[[Characters/DoctorWhoEighthDoctor 8th]]''' -- Creator/PaulMcGann (1996 TV Movie and 2013 Anniversary short)
44** The circumstances of his death long [[TheUnreveal unrevealed]], it is learned in a DVD short called "[[Recap/DoctorWho50thPrequelTheNightOfTheDoctor The Night of the Doctor]]" that he was fatally injured when a spaceship he was on crashed onto the planet Karn, but given a chance at regeneration by the Sisterhood of Karn, who temporarily revived him. The Doctor was able to willingly choose what kind of Time Lord he would turn into with their help, and chose "Warrior" to end the Last Great Time War once and for all. Unusually, this regeneration scene was not filmed until 2013; before that year, fans of the TV series only knew about the Eighth Doctor from the 1996 movie, before the 2005 revival jumped to a new incarnation without much explanation. Though being the "current" Doctor from 1996 to the 2005 {{revival}} in the ExpandedUniverse means that he has — and continues to have — a very healthy run, it never ''was'' known how the Paul [=McGann=] Doctor's life ''ended'', though the Time War was always the most logical assumption to make.
45* '''[[Characters/DoctorWhoWarDoctor War]]''' -- Creator/JohnHurt (2013; introduced in [[Recap/DoctorWhoS33E13TheNameOfTheDoctor "The Name of the Doctor"]], retroactively debuted in [[Recap/DoctorWho50thPrequelTheNightOfTheDoctor "The Night of the Doctor"]], and appeared in [[Recap/DoctorWho50thASTheDayOfTheDoctor "The Day of the Doctor"]])
46** Regenerated into the Ninth Doctor at the end of [[Recap/DoctorWho50thASTheDayOfTheDoctor "The Day of the Doctor"]] due to apparent old age and fatigue; this regeneration worked more like a system update, and didn't really seem to cause any form of agony or difficulty for him (although the Ninth Doctor's actions immediately after the change have yet to be depicted on screen, the events of [[Recap/DoctorWhoS27E1Rose "Rose"]] came very soon after this regeneration). This incarnation did not use the name "Doctor" until the end of his life, thus he is not counted as a numbered Doctor either in or out of universe.
47* '''[[Characters/DoctorWhoNinthDoctor 9th]]''' -- Creator/ChristopherEccleston (2005)
48** Regenerated due to cellular degeneration caused by absorbing the entire Time Vortex from Rose in order to save her life, in [[Recap/DoctorWhoS27E13ThePartingOfTheWays "The Parting of the Ways"]].
49* '''[[Characters/DoctorWhoTenthDoctor 10th]]''' -- Creator/DavidTennant (2005-2010); this Doctor regenerated ''twice''.
50** His first regeneration occurred after being shot by a Dalek at the end of [[Recap/DoctorWhoS30E12TheStolenEarth "The Stolen Earth"]], but redirected the regenerative energy that would've changed his appearance into his severed hand (which later grew into a new Doctor) from [[Recap/DoctorWho2005CSTheChristmasInvasion "The Christmas Invasion"]] because he "had vanity issues at the time." (He also doesn't suffer from any post-regenerative trauma after this regeneration, but this is never explicitly stated as the reason he did it.) As a result, the regeneration was aborted without changing his appearance.
51** His second regeneration, this time a complete one, occurred after absorbing a massive dose of radiation in Wilf's stead in [[Recap/DoctorWhoS30E17E18TheEndOfTime "The End of Time"]]. Since he took the time to hold back his regeneration and say goodbye to the Creator/RussellTDavies era of companions, this Doctor's regeneration was powerful enough to [[TrashTheSet wreck the TARDIS interior]], causing her to shut down for repair in [[Recap/DoctorWhoS31E1TheEleventhHour "The Eleventh Hour"]].
52** David Tennant also portrayed the Meta-Crisis Tenth Doctor, a half-human clone of the Tenth Doctor created by the aftermath of the aforementioned sidestepped regeneration, in the 2008 episode [[Recap/DoctorWhoS30E13JourneysEnd "Journey's End"]]. Following his first aborted regeneration, companion Donna Noble interacted with the hand while it was infused with live regeneration energies. It sampled her DNA and used it to fashion a whole new body for the hand, creating a ''clone'' of the Tenth Doctor that looked just like him, but had one heart, no regenerations, a human lifespan, some of Donna's temper, and an apparently more unhinged personality.
53* '''[[Characters/DoctorWhoEleventhDoctor 11th]]''' -- Creator/MattSmith (2010-2013)
54** Regenerated due to old age in [[Recap/DoctorWho2013CSTheTimeOfTheDoctor "The Time of the Doctor"]]. This Doctor was ''supposed'' to die (as he had used up all 12 of his allowed regenerations), but thanks to a plea by his companion, Clara, the Time Lords granted him a brand-new cycle at the last minute to allow him to save Gallifrey. (This involved rewriting history in which the Doctor's death was already established fact; consequences of this reverberated throughout the 11th Doctor's incarnation.)
55* '''[[Characters/DoctorWhoTwelfthDoctor 12th]]''' -- Creator/PeterCapaldi (2013-2017)
56** Now that people had been reintroduced to ''Series/DoctorWho'', they could be reintroduced to the idea that the Doctor could be played by any man, not just young ones. One character even commented that the two previous Doctors had been "flirting with the entire universe" with their youthful looks and normally cheerful demeanor, and challenged his companion Clara Oswald to not give up on him now that he was a crotchety Scotsman. Not only did she not give up, by the end of her time with him, despite their age difference, they had entered into a form of old-fashioned romance. It should be noted that though his last moments were in his youthful form, the Eleventh Doctor aged considerably offscreen in his last episode, presumably so an older Doctor made narrative sense.
57** [[Recap/DoctorWhoS36E8TheLieOfTheLand "The Lie of the Land"]] had the Doctor demonstrate he could fake a regeneration, simulating its effects without going through with it, doing so as part of a SecretTestOfCharacter for Bill.
58** Started to regenerate for real in TheTeaser of [[Recap/DoctorWhoS36E11WorldEnoughAndTime "World Enough and Time"]], before the story jumped back to show the events leading up to it, eventually turning out in [[Recap/DoctorWhoS36E12TheDoctorFalls "The Doctor Falls"]] to have begun after the Doctor was electrocuted by a Cyberman. However, he repeatedly held the regeneration off, not wanting to change again, despite taking repeated injuries while fighting against the Cybermen. The Doctor's refusal to change was such that at one point, after blowing up a Cyber-army, he chose to die rather than regenerate, but was saved by companion Bill Potts, who inadvertently brought him back to life, although still on the verge of regeneration. The story ended with the "World Enough and Time" scene, but again the Doctor held off regenerating, finally going through with it in [[Recap/DoctorWho2017CSTwiceUponATime "Twice Upon a Time"]] where he was convinced to regenerate in order to continue saving lives. Like the Tenth Doctor's regeneration into the Eleventh, the built-up regeneration energy resulting from the delay [[TrashTheSet caused serious damage to the TARDIS]], resulting in the Thirteenth Doctor being thrown out of and separated from her.
59* '''[[Characters/DoctorWhoThirteenthDoctor 13th]]''' -- Creator/JodieWhittaker (2017-2022)
60** The Doctor's first female incarnation in the TV series, building off the cross-gender regenerations referenced and shown during the Eleventh and Twelfth Doctors' eras.
61** In "[[Recap/DoctorWho2022CENThePowerOfTheDoctor The Power of the Doctor]]" she initially experienced a forced regeneration at the Master's hands as he attempted a GrandTheftMe, which was reversed by Yaz with help from a hologram of the Fugitive Doctor and the regenerative energy of several [=CyberMasters=]. She regenerated permanently after the Master aimed a destructive blast from the Qurunx at her, although she held it off long enough to have a final moment with and see off Yaz.
62* '''[[Characters/DoctorWhoFourteenthDoctor 14th]]''' -- David Tennant (2022-2023)
63** The first incumbent Doctor to be played by the same actor as another incarnation, with the Thirteenth Doctor having mysteriously regenerated into this familiar form at the end of "The Power of the Doctor". Tennant starred in three specials in November and December 2023 to commemorate the show’s 60th anniversary, before handing over to the Fifteenth Doctor.
64** In "[[Recap/DoctorWho60thASTheGiggle The Giggle]]", he eventually regenerated after taking a hit from a [[WaveMotionGun galvanic beam]] operated by the Toymaker, although in a surprise twist, he undergoes a "bigeneration", allowing him to coexist alongside...
65* '''[[Characters/DoctorWhoFifteenthDoctor 15th]]''' -- Creator/NcutiGatwa (2023-)
66** The first main Black incarnation of the Doctor; Creator/ColinSalmon's Doctor Moon was a minor character who was only confirmed to be the Doctor via WordOfGod, while Creator/JoMartin's Fugitive is outside of the main sequence.
67----
68In addition, the following actors have been cast as "The Doctor", but have not actually portrayed the role as the original Doctor, but [[TheOtherDarrin as a stand-in for an unavailable or deceased actor]], an AffectionateParody, a DocuDrama, or an alternate version of the Doctor altogether:
69* Edmund Warwick as a "[[RobotMe Robot Dr. Who]]" in the 1965 story [[Recap/DoctorWhoS2E8TheChase "The Chase"]].
70* Creator/PeterCushing as a human named Dr. Who in the 1966 film, ''Film/DrWhoAndTheDaleks'' and its 1967 sequel, ''Film/DaleksInvasionEarth2150AD''. The films were adaptations and reimaginings of TV stories, with a number of key elements changed, such as the Doctor's character.
71* Trevor Martin as an alternate Fourth Doctor for the 1974 stage play ''Doctor Who and the Seven Keys to Doomsday''. Tom Baker had yet to be cast as the official Fourth Doctor. The Third Doctor "regenerated" onstage and Martin took over during the play.[[note]]In reality, Martin — wearing a wig and Jon Pertwee's costume and keeping his face obscured — staggered out of the TARDIS and collapsed beneath his costume's cape. He quickly removed the wig while an audiovisual display on a screen above the stage depicted the regeneration and distracted the audience.[[/note]]
72* The 1976 Fourth Doctor serial "[[Recap/DoctorWhoS13E5TheBrainOfMorbius The Brain of Morbius]]" suggested that the Doctor had at least eight different incarnations before the First Doctor. This was largely ignored by the fandom, who accepted the twelve-regeneration limit and the First Doctor as the original incarnation of the Doctor, and later informally retconned them into being previous incarnations of Morbius, but "The Timeless Children" forced the episode back into public consciousness by [[spoiler:confirming that they are the unseen incarnations of the Timeless Child, who eventually becomes the Doctor.]] The faces representing these incarnations are actually mugshots of various men on the story's production team[[note]]from top-left of [[https://static.wikia.nocookie.net/tardis/images/b/b9/Morbius_Doctors_bigger.JPG this image]]: Christopher Barry, Robert Banks Stewart, Christopher Baker, Creator/PhilipHinchcliffe, Creator/DouglasCamfield, Creator/GraemeHarper, Martin Jurgens, and George Gallaccio[[/note]], and they technically never portrayed the Doctor in any media, but producer Creator/PhilipHinchcliffe fully intended to make the "Morbius Doctors" canon.
73* Adrian Gibbs as the Watcher, a ghostly manifestation of the regeneration halfway completed from the Fourth to Fifth Doctors in the 1981 story, [[Recap/DoctorWhoS18E7Logopolis "Logopolis"]]. His origins were vaguely explained at best, and he vanished after merging with the Fourth Doctor to regenerate him into the Fifth Doctor.
74* Richard Hurndall, cast as the First Doctor in the 1983 20th anniversary special [[Recap/DoctorWho20thASTheFiveDoctors "The Five Doctors"]], as William Hartnell had died by this point.
75* Creator/LennyHenry in a 1985 comic sketch as an alternate Seventh Doctor post-regeneration, facing off against the evil Cyberman "[[UsefulNotes/MargaretThatcher Thatchos]]".
76* Creator/MichaelJayston as the Valeyard, allegedly a [[FutureMeScaresMe potential evil future incarnation]] of the Doctor or undesired side effect [[EnemyWithout born out]] of the Doctor sometime between their twelfth and final incarnation, in 1986's ''The Trial of a Time Lord'' (Season 23) and some spin-off Big Finish media.
77* As noted above, Sylvester [=McCoy=] was required to FakeShemp for the Sixth Doctor during the regeneration sequence in [[Recap/DoctorWhoS24E1TimeAndTheRani "Time and the Rani"]].
78* David Banks as an alternate Doctor and Jon Pertwee's understudy in the 1989 stage play ''Doctor Who: The Ultimate Adventure'' when Pertwee had fallen ill and could not perform onstage.
79* Creator/RowanAtkinson, Creator/RichardEGrant, Creator/JimBroadbent, Creator/HughGrant, and Creator/JoannaLumley as alternate Ninth through Thirteenth Doctors in the parodic BBC [[UsefulNotes/ComicRelief Red Nose Day]] special of 1999, ''[[Recap/DoctorWhoTheCurseOfFatalDeath The Curse of Fatal Death]]'', regenerating for humourous and rather absurd reasons.
80* Creator/MarkGatiss as an unnumbered Doctor in the 1999 spoof "The Web of Caves".
81* Creator/RichardEGrant again, this time as the Shalka Doctor for the 2003 web release ''WebAnimation/ScreamOfTheShalka'', who was intended as the official Ninth Doctor but was removed from continuity following the BBC Wales-produced revival of the series with Eccleston.
82* The AlternateUniverse Creator/BigFinish portrayals:
83** Geoffrey Bayldon as an alternate First Doctor who never left Gallifrey.
84** Creator/DavidWarner as an alternate Third Doctor who arrived on Earth for his exile years after he did in mainstream canon, leading to everything on Earth [[CrapsackWorld utterly going to Hell]].
85** David Collings as a less sympathetic alternate Future Doctor.
86** Michael Jayston as an alternate Valeyard who became the Doctor.
87** Arabella Weir as an alternate and comical female Third Doctor.
88** Colin Baker as an alternate War Doctor known as "the Warrior" who came into being earlier in the Doctor's timeline than mainstream canon, in a universe where the Fourth Doctor decided to destroy the Daleks in [[Recap/DoctorWhoS12E4GenesisOfTheDaleks "Genesis of the Daleks"]].
89* Jon Culshaw as a stand-in for Tom Baker, due to his uncanny impersonation of the actor's voice. Periodically cast in Big Finish audios, and also played the "real life" Tom Baker in a 50th anniversary spoof.
90* Creator/ColinSalmon as Doctor Moon in [[Recap/DoctorWhoS30E8SilenceInTheLibrary "Silence in the Library"]]/[[Recap/DoctorWhoS30E9ForestOfTheDead "Forest of the Dead"]], a virtual representation of a future incarnation of the Doctor who acts as Charlotte's therapist. Doctor Moon is never stated on-screen to be the Doctor, but Creator/StevenMoffat intended him as such, confirming it in a 2008 email exchange with Creator/RussellTDavies and publicly in 2020. Consequently, this makes Salmon the first nonwhite actor to portray the Doctor.
91* Toby Jones as the Dream Lord, a malicious [[EnemyWithin manifestation of the Doctor's self-loathing]], in the 2010 episode [[Recap/DoctorWhoS31E7AmysChoice "Amy's Choice"]].
92* Daniel Anthony, who played Clyde Langer in ''Series/TheSarahJaneAdventures'', briefly played the Eleventh Doctor in Clyde's body thanks to a mishap in the 2010 SJA serial "Death of the Doctor".
93* Creator/DavidBradley (portrayed William Hartnell and Hartnell in-character as the First Doctor) in the 2013 docudrama ''Film/AnAdventureInSpaceAndTime''. He reprised the role within the show's canon for the 2017 Christmas Special, [[Recap/DoctorWho2017CSTwiceUponATime "Twice Upon a Time"]] (as Hurndall had also died), and has subsequently voiced the First Doctor in Big Finish audios. He reprised the role on TV again for the 2022 BBC Centenary Special "[[Recap/DoctorWho2022CENThePowerOfTheDoctor The Power of the Doctor]]".
94* Tony Garner as the "Second-and-a-Half" Doctor in the fan-production ''[[http://www.doctorwho-devious.com/ Devious]]''. Created when the Second Doctor's regeneration is delayed during the stay of his sentencing, and later completes his transformation into the Third Doctor once the sentence is ultimately completed. The production has been in DevelopmentHell since ''1995'', but did star Jon Pertwee in one of his final performances as the Third Doctor.
95* An uncredited child actor appeared as a very young First Doctor in the Series 8 episode [[Recap/DoctorWhoS34E4Listen "Listen"]]. Only the child-Doctor's feet, ankles, hair and silhouette are shown on screen, to leave the young Doctor's appearance to viewers' imagination, although he does speak a line.
96* Uncredited body doubles FakeShemp for past versions of the Doctor in [[Recap/DoctorWhoS33E13TheNameOfTheDoctor "The Name of the Doctor"]] (with archive footage of the original actors also used) and [[Recap/DoctorWhoS35E2TheWitchsFamiliar "The Witch's Familiar"]].
97* Tim Treloar, who was cast as the voice of the Third Doctor in the Big Finish audios in place of the late Jon Pertwee.
98* John Guilor, voice imitator for the First Doctor, plays him flawlessly in some audio dramas. It's him who is heard in [[Recap/DoctorWho50thASTheDayOfTheDoctor "The Day of the Doctor"]] when the First Doctor announces himself to the council.[[note]]The Time Lords, and thus the Doctor's origin, were the big reveal in the Second Doctor's final story; to those who know that, the ''First'' Doctor having anything to say about "Gallifrey" was one of the top five surprises of the episode! It also let you know ''instantly'' that this was not stock audio, but a perfect voice-over stand-in.[[/note]]
99* Creator/WilliamRussell, who played day-one companion Ian Chesterton in the classic series, voices the First Doctor in a number of Big Finish audios.
100* Creator/FrazerHines, who played companion Jamie [=McCrimmon=] in the classic series, voiced the Second Doctor in the Big Finish audio "The Light at the End".
101* Creator/PatrickTroughton's sound-a-like son, David, has also portrayed his father's Doctor in a few audio dramas.
102* [[Recap/DoctorWhoS38E5FugitiveOfTheJudoon "Fugitive of the Judoon"]] introduces Creator/JoMartin as an incarnation of the Doctor whose position in the timeline is unknown, as neither she nor Thirteen remember ever being each other. As Doctor Moon was only confirmed to be the Doctor by WordOfGod, this also makes Martin's incarnation the first nonwhite one to be confirmed on-screen. [[spoiler:After the events of "The Timeless Children" and "Once, Upon Time" she's likely a past incarnation who worked for [[NoSuchAgency the Division]].]]
103* [[Recap/DoctorWhoS38E10TheTimelessChildren "The Timeless Children"]] has [[spoiler:every single actor who plays the Timeless Child. It's revealed the Doctor is much, ''[[TimeAbyss much]]'' older than they ever knew and has had countless lives that they've been made to forget since they started as the Timeless Child. Several of these lives, encompassing a wide variety of appearances, make brief appearances throughout the episode.]]
104* Jonathon Carley, who was cast as the voice of a younger War Doctor in the Big Finish audios following John Hurt's death.
105* Creator/PatrickTroughton's other actor son, Creator/{{Michael|Troughton}}, has been cast as the voice of his father's Doctor in the Big Finish audios as well.
106* Stephen Noonan voices the First Doctor in some Big Finish audios.
107* Big Finish's ''Stranded 4'' features Colin Baker as another version of the Curator, and implies that he'd also taken the Eleventh Doctor's form at one point too. (Strictly speaking, these aren't other incarnations, but different forms of the same incarnation, due to the Curator being regeneration-fluid.)
108[[/folder]]
109
110[[folder:The Master]]
111Though he's been shown to explicitly regenerate only once onscreen (two other times, he's just stolen bodies of other people), fourteen people have played the Master so far.
112* Creator/RogerDelgado (1971-1973)
113** The actor died before a death scene could be filmed; the writers' intent was for the Master to die saving the Doctor in a HeroicSacrifice. The Master's subsequent change of appearance was later explained in the Literature/EighthDoctorAdventures novel ''Legacy of the Daleks'' where he was shot with his own weapon by Susan Foreman, who then stole his TARDIS; this was not a regeneration, as the Master had already regenerated twelve times by this point. An entirely different demise for the Delgado Master was later depicted in the Twelfth Doctor ''Magazine/DoctorWhoMagazine'' comic strip story "Doorway to Hell", in which he was blasted with an energy bolt by the Doctor's temporarily empowered companion and her family (long story, it was after a '''lot''' of provocation), and was then depicted as attempting to regenerate in the usual manner, which presumably failed and turned him into the rotting Pratt form, unless one considers Big Finish audios to be canon. In "The Two Masters", the Pratt/Beevers incarnation originally had a fully healthy body, but was severely injured by the Macqueen incarnation, as part of the Macqueen Master's plan to fake the death of his earlier incarnation, in order to gain access to a cult that had instructed him to kill one of his past selves.
114* Peter Pratt (1976)
115** Played the decayed form of the Master in [[Recap/DoctorWhoS14E3TheDeadlyAssassin "The Deadly Assassin"]], unable to regenerate as he is "at the end of his final regeneration". If one takes the books as canon, this is the same incarnation as Delgado.
116* Geoffrey Beevers (1981; same incarnation as Pratt)
117** Played the decayed form of the Master in [[Recap/DoctorWhoS18E6TheKeeperOfTraken "The Keeper of Traken"]]; this was the same role previously played by Pratt, making the Master one of the few characters to have been both an Nth Doctor and an [[TheOtherDarrin Other Darrin]]. The Big Finish story [[Recap/BigFinishDoctorWhoFDAS1E5TrailOfTheWhiteWorm "Trail of the White Worm"]] did have an explanation for his different appearance compared to the Pratt Master; he is a somewhat healthier and stabler version, having used energy from the Eye of Harmony to heal himself. Beevers also (technically) voiced Eric Roberts' Master in the Big Finish audios.
118** Changed appearance — again without regenerating — in [[Recap/DoctorWhoS18E6TheKeeperOfTraken "The Keeper of Traken"]] by stealing the body of the significantly named [[SignificantAnagram Tremas]].[[note]] Tremas was played by Anthony Ainley.[[/note]]
119* Creator/AnthonyAinley (1981-1989)
120** Played the Master from the end of the Tom Baker era all the way to the end of the classic series.
121** No regeneration scene was filmed, as the character was recast for the TV Movie.
122* Gordon Tipple (1996)
123** Played the Master for a single scene in [[Recap/DoctorWhoTVMTheTVMovie the TV Movie]], seen only from behind and from the neck down. May or may not be the same incarnation as Ainley's Master.
124** After being exterminated by the Daleks, the Master took over the body of an ambulance driver named Bruce.
125* Eric Roberts (1996)
126** Played the Master's new body-hop victim Bruce, and thus was the Master himself for most of the film.
127** No regeneration scene was filmed, but this Master "died" at the end of his only appearance. Big Finish would depict him as having survived and remained in this form for some time before being reduced back to the Pratt/Beevers version.
128* Alex Macqueen (various Big Finish audios)
129** Played a Master who has been saved from his {{Body Surf}}ing predicament by having been granted a new regeneration cycle by the Time Lords, of which it is strongly implied that he is the first new incarnation. He is further implied to have been the first Master who fought in the Time War.
130* Creator/DerekJacobi (2007)
131** This Master was disguised as a man named "Professor Yana" under the effects of a Chameleon Arch, and fought during the Time War.
132** Jacobi also portrayed a mostly-reformed Master in "Scream of the Shalka", though it was a different incarnation from Yana's and took place in a different continuity.
133** Regenerated after being shot by his (or rather, Yana's) assistant Chantho. This is the only time a regeneration of the Master has been depicted onscreen.
134* Creator/JohnSimm (2007-2010, 2017)
135** Used the civilian identity of "Harold Saxon", and became Prime Minister.
136** Died in [[Recap/DoctorWhoS29E13LastOfTheTimeLords "Last of the Time Lords"]] after being shot by his wife, and refused to regenerate. Later revived by a cult in [[Recap/DoctorWhoS30E17E18TheEndOfTime "The End of Time"]], but died again in a HeroicSacrifice, or so it appeared at the time. The episode suggests that the Master considered his revived form to be a new incarnation who happens to look the same as his last one.
137** Reappeared alongside Missy in Series 10. From his perspective, it's sometime after the events of [[Recap/DoctorWhoS30E17E18TheEndOfTime "The End of Time"]].
138** Was stabbed in the back by his future incarnation Missy ([[MutualKill whom he shot with his laser screwdriver shortly afterwards]]), and is implied to have later regenerated into her offscreen.
139* Creator/MichelleGomez (2014-2017)
140** First known as "Missy" [[note]]Short for 'Mistress'[[/note]], revealed as the Master at the end of the Twelfth Doctor's first season.
141** First cross-gender regeneration of a Time Lord/Lady shown onscreen, though it was earlier confirmed as possible in [[Recap/DoctorWhoS32E4TheDoctorsWife "The Doctor's Wife"]] with a similar hint at the end of [[Recap/DoctorWhoS30E17E18TheEndOfTime "The End of Time"]].
142** Was apparently unable to regenerate after being shot in the back by the Saxon Master ([[HeelFaceDoorSlam who wanted to prevent her from turning good and helping the Doctor]]).
143* Creator/SachaDhawan (2020-)
144** Originally known as "O", revealed as the Master at the end of his first episode, part 1 of [[Recap/DoctorWhoS38E1E2Spyfall "Spyfall"]]. Placement is ambiguous but said by most sources to be after Missy despite having returned to being evil.
145** The Master's first onscreen non-white incarnation.
146** Briefly possesses the Doctor and forces her body to regenerate into his form before being undone and sent back. Seemingly expires shortly afterward. [[spoiler:Though he might be the incarnation who later lost a game against the Toymaker before [[Recap/DoctorWho60thASTheGiggle being imprisoned inside his gold tooth]], said tooth later being retrieved...]]
147----
148* William Hughes (2007), a child actor, played the 8-year-old Master in a flashback in [[Recap/DoctorWhoS29E12TheSoundOfDrums "The Sound of Drums"]]. Hughes' unspeaking role is the only time the character's ''original'' appearance has been portrayed on-screen.
149* Exclusive to Titan Comics is a wartime Master who appears in the form of an "[[Recap/DoctorWhoTVMTheTVMovie Asian child]]". Working alongside the War Doctor, this Master demonstrates how timey-wimey the Time War is by his brief and spontaneous transformation into a past Master, namely Delgado. Ultimately, this incarnation regenerates into the Jacobi Master.
150* Creator/JamesDreyfus played an earlier, pre-Delgado incarnation of the Master, contemporary to the First and Second Doctors in Big Finish audio dramas.
151* Gina [=McKee=] played the Lumiat in the Big Finish story of the same name. Following Missy, who cheated death thanks to a hidden gadget, the Lumiat inherited her predecessor's HeelFaceTurn and strove to be a force for good, becoming the Master's equivalent of the Valeyard. Ultimately, she ran afoul of and was mortally wounded by a younger, pre-HeelFaceTurn Missy, resulting in her regeneration into what WordOfGod confirms is the Dhawan Master.
152[[/folder]]
153
154[[folder:Other]]
155* A temporary case of this trope occurred in [[Recap/DoctorWhoS6E2TheMindRobber "The Mind Robber"]]. Creator/FrazerHines got chicken pox, and was replaced for one episode by Hamish Wilson. Fortunately, that serial is something of a MindScrew, so they were able to provide a "sensible" explanation: Jamie is reduced to a "puzzle" that the Doctor must solve by picking the right facial features. He does so incorrectly and gives Jamie the wrong face. Later on it happens again, and he is able to fix his mistake. Makes about as much sense as anything else that happens in that story.
156* Romana regenerated from Creator/MaryTamm into Creator/LallaWard — who, confusingly enough, had appeared alongside Tamm in a serial just before she took over the role. This got explained by Romana liking Princess Astra's appearance so much that she decided to regenerate into a double of her. During the regeneration sequence, several uncredited actresses portray "in-between" versions of Romana as she tries out different bodies, something not portrayed onscreen since. A third Romana, played by Creator/JulietLandau, was introduced in the EU audio dramas in 2013; she is said to be a future incarnation, possibly from thousands of years into the future, so it's not known how many Romanas existed before her.
157* Borusa, a senior Time Lord on Gallifrey and the Doctor's old Academy tutor, was in a different regeneration in each of the four stories he appeared in, being played by Angus [=MacKay=] in [[Recap/DoctorWhoS14E3TheDeadlyAssassin "The Deadly Assassin"]], John Arnatt in [[Recap/DoctorWhoS15E6TheInvasionOfTime "The Invasion of Time"]], Leonard Sachs in [[Recap/DoctorWhoS20E1ArcOfInfinity "Arc of Infinity"]] and Philip Latham in [[Recap/DoctorWho20thASTheFiveDoctors "The Five Doctors"]]. No explanation was given for the rapidity of his regenerations, although many fans like to take it as an indication of [[KlingonPromotion how Time Lord politics work]]. This became something of an in-joke in the expanded universe: in the War Doctor prose novel ''[[Recap/NewSeriesAdventuresEnginesOfWar Engines of War]]'', Borusa is shown in several different regenerations, including a middle-aged woman — possibly a sneaky reference to an AlternateUniverse Borusa seen in the ''AudioPlay/{{Gallifrey}}'' series (on an alternate version of the planet), in which she was played by Creator/KatyManning. The version of Borusa who actually taught the First Doctor at the Academy appears briefly in a flashback in the Tenth Doctor ''ComicBook/DoctorWhoTitan'' comics, and is depicted as a stout, elderly, bearded black man.
158* The first on-screen regeneration of a Time Lord other than the Doctor occurs in [[Recap/DoctorWhoS11E5PlanetOfTheSpiders "Planet of the Spiders"]], when K'anpo Rimpoche (aka the Hermit, the Doctor's childhood spiritual advisor who'd travelled to Earth and adopted the identity of a Tibetan abbot) is fatally wounded by his [=EightLegs=]-dominated students. Upon regenerating, he assumes the form of Cho-Je, his supposed assistant: actually a projection of his own self, and perhaps a more expertly-produced and consciously-controlled equivalent of the Watcher (see above).
159* Rassilon, the ruthless and egomaniacal founder of Time Lord society, has been played by six actors: Richard Mathews in [[Recap/DoctorWho20thASTheFiveDoctors "The Five Doctors"]], Creator/TimothyDalton in [[Recap/DoctorWhoS30E17E18TheEndOfTime "The End of Time"]] and Donald Sumpter in [[Recap/DoctorWhoS35E12HellBent "Hell Bent"]], while Big Finish adds Don Warrington, Terrence Hardiman and Creator/RichardArmitage to the mix, chronologically following Mathews but preceeding Dalton.
160* In [[Recap/DoctorWhoS14E2TheHandOfFear "The Hand of Fear"]], one-shot villain Eldrad regenerates from a female incarnation into a male one, becoming the first on-screen cross-gender regeneration. Eldrad is a Kastrian rather than a Time Lord, but specifically tells the Doctor that, as a Time Lord, he should already know such things are possible.
161* K9's voice actor changed in Season 17 from Creator/JohnLeeson, the person most associated with the role (he's still voicing the character to this day), to Creator/DavidBrierly. This was explained on-screen by K9 having "robot laryngitis" during the first story of Season 17 (and thus not having to speak or take part) and the Doctor not quite repairing him correctly until the next season. In-verse, the Doctor left K9 with companions who were parting company with him on a couple of occasions, unpacking a new copy of the robot dog for himself each time. Presumably he downloaded the previous K9's memories and personality into the new housing to ensure it remained "his" dog. A heavily-modified version of K9 also featured in the spinoff ''Series/{{K9}}'', which originally looked the same as the regular design before being destroyed and repaired by a device which appears to mimic Time Lord regeneration.
162* Yet another Time Lord ([[HalfHumanHybrid or a part-Time Lord, at least]]) has been shown to have the ability — River Song, aka Mels, aka Melody Pond, daughter of Amy and Rory. This example of regeneration is particularly interesting for a number of reasons. 1) It's the first time that a Time Lord's regenerations are met out of order (beginning with seeing River Song (Creator/AlexKingston), then her first body as a child (Sydney Wade), and ''then'' that body as a baby (Harrison and Madison Mortimer), and then her second body from childhood (Maya Glace-Green) to being a young adult (Nina Toussaint-White)). 2) She proved that the energy used in the regeneration can be used to heal others (a favour that the Doctor later reciprocated), so by the time of [[Recap/DoctorWhoS30E9ForestOfTheDead "Forest of the Dead"]], her third body was already decidedly her final one. 3) This unambiguously established, for the first time in a TV-continuity story, the possibility that Time Lords can RaceLift in Earth-human terms as part of a normal regeneration. 4) This is the first onscreen confirmation that non-Gallifreyans can become Time Lords, a fate originally planned for companion [[Creator/SophieAldred Ace]] but never carried out due to the cancellation of the show.
163* Not only is changing race possible, so is changing gender. Though it's first seen in a parody special, the Doctor later mentions a friend named the Corsair in [[Recap/DoctorWhoS32E4TheDoctorsWife "The Doctor's Wife"]], who had the same tattoo in all his — or her — regenerations. This was further confirmed as canonical when Missy appeared as the first female incarnation of the Master.
164* [[Recap/DoctorWhoS35E12HellBent "Hell Bent"]] features the general of Gallifrey's armed forces regenerating. He goes from Ken Bones (white man) to Creator/TNiaMiller (black woman). Miller's incarnation notes that Bones' incarnation (the commander's tenth regeneration) was her only male one, confirming that at least some Time Lords do recognize a base gender.
165* RealLifeWritesThePlot in the case of the Rani; Creator/KateOMara played the original Rani but passed away suddenly in 2014, before she could return for a Big Finish audio; her wishes were for someone else to take on the role and the Rani regenerated, with Siobhan Redmond as the new incarnation.
166* This wasn't the first time Big Finish had created a new incarnation of a Time Lord due to the death of the original actor — a number of audios feature Graeme Garden and Rufus Hound as later incarnations of the Monk, replacing the long-dead Peter Butterworth. Then Gemma Whelan was cast as the first female incarnation, the Nun.
167* It also wasn't the last time they did it either — ''The Trouble with Drax'' features Ray Brooks as the third incarnation of wheeler-dealer Drax, taking over for the deceased Barry Jackson, who's established as having been Drax's second incarnation. [[spoiler:A number of supporting characters in the story also turn out to be incarnations of Drax, with John Challis as the fifth, Miranda Raison as the eighth, Creator/JohnLeeson as the ninth, and Hugh Fraser as the twelfth.]] The ''Connections'' story ''Here Lies Drax'' features [[spoiler:Jeff Rawle as Drax's fourth incarnation, Hugh Ross as the seventh, and Nina Wadia as the tenth. While Creator/ShaneRichie is credited as playing Drax, he actually plays someone impersonating him]].
168* Spoofed in the ''Doctor Who'' 50th anniversary Google Doodle, a simple game about negotiating territory and running away from Daleks. Every time the player died, they regenerated into the next Doctor.
169** ''VideoGame/LegoDimensions'' also uses this game mechanic for the Doctor. All main Doctors from the First to the Twelfth, plus John Hurt's War Doctor, can be played. It happens whenever the "current" version of the Doctor is killed in-game, or could be activated out of order in the TARDIS.
170** Before that, FASA's adventure gambeooks allowed for the Doctor to be mortally wounded and attempt to regenerate. If the necessary dice rolls were successful the Doctor would "regenerate" whilst remaining in the same body and the player would resume the adventure.
171** ''The Mazes of Time'' has the Eleventh Doctor "regenerate" but staying in the same body whenever he is killed. Even Amy Pond, his human companion, can regenerate here. [[ContinuitySnarl Figure that one out]].
172** Matt Smith, playing the Eleventh Doctor in a short video clip for the 50th Anniversary celebrations, claimed that he'd just returned from the ''100th'' Anniversary celebrations, at which all ''fifty-seven'' Doctors had been in attendance.
173* Creator/CatherineTate, who arguably played a Doctor of sorts in [[Recap/DoctorWhoS30E13JourneysEnd "Journey's End"]] — the "Doctor-Donna", an alter ego created from being exposed to his regeneration energy, which at first had no side effects until she was struck by a jolt of electricity. This awakened the Doctor's personality and intellect inside her head, on top of her human psyche. However, Donna's mind began to overload from having two personalities working at the same time, and the Doctor was forced to block her memories of him forever so that she would lose the awareness of her "Doctor-Donna" self and the "Doctor" half of her mind would be switched off. When they met again much later in the Doctor's timeline, he was forced to remove the block, only to find Donna survived, her daughter Rose having inherited some of the energy, and together Donna and Rose decided to let the regeneration energy go.
174** Given River's more successful in utero BioAugmentation (with a little help from the TARDIS), one interpretation is that, had Donna been young enough or met other energy-state criteria, she could have adapted and gone whole-hog. But Ten had a well-established habit of dithering with the whole process, from clones, to Donna, to his own regeneration, so could well have utterly borked it. It would certainly explain the crushing guilt the Doctor held over wiping her.
175* The Toymaker was initially played by Creator/MichaelGough in the 1966 serial "[[Recap/DoctorWhoS3E7TheCelestialToymaker The Celestial Toymaker]]", before being recast 57 real-life years later with Creator/NeilPatrickHarris for "[[Recap/DoctorWho60thASTheGiggle The Giggle]]". In the meantime, he was voiced by David Bailie in two [[Recap/BigFinishDoctorWho Big Finish audio plays]], ''The Nightmare Fair'' and ''Solitaire'', in 2009-2010 (based on the cover art for the two audios, Bailie was intended to be TheOtherDarrin for Gough), and was briefly played by Paul Anthony-Barber in another audio play (as the voice of a separate character which the Toymaker steals). For his dance scene in "The Giggle", he was body-doubled by Luke Featherston. Unlike most other examples of regeneration listed on this page, his changes in appearance are left unexplained if not for the fact that he's an outright EldritchAbomination and RealityWarper. One of the Expanded Universe novels indicates he's possessing the body of one of the Doctor's old Time Lord schoolmates, which would logically be capable of regeneration, but that may not be canon. In an upcoming Big Finish audio drama featuring the Fourth Doctor, the Toymaker will be voiced by actress Annette Badland.
176* The non-dramatic parts of the Expanded Universe have introduced a few versions of regenerated Time Lord characters who were never played by any real actor. The ''Literature/DoctorWhoNewAdventures'' featured a new version of the Master [[ComicBookFantasyCasting physically based]] on Creator/BasilRathbone, the ''Literature/EighthDoctorAdventures'' introduced an antagonistic third incarnation of Romana physically based on Louise Brooks, the ''Literature/PastDoctorAdventures'' had a brief appearance from a dark-skinned future incarnation of Romana in [[spoiler:''Tomb of Valdemar'']], the ''Literature/DoctorWhoNovelisations'' had the Doctor's Merlin incarnation feature in the ''Battlefield'' novelisation's prologue, a man with unruly red hair, a tatty embroidered Afghan coat, and a floppy brown felt hat with a bandana around the brim, and had Clive show Rose two original incarnations of the Doctor on top of the official ones in the novelisation of ''Rose'', one a tall, bald black woman, the other an [[AmbiguousGender androgynous]] child in a hi-tech wheelchair with a robot dog, the ''Magazine/DoctorWhoMagazine'' comic strips featured a unique version of the Master during the Eighth Doctor's era, who was black in human ethnic terms, and featured an incarnation of Rassilon preceding all those on-screen, an older dark-skinned woman, for their tie-in to the ''Time Lord Victorious'' multi-platform event, "Monstrous Beauty", and the ''ComicBook/DoctorWhoTitan'' Eleventh Doctor comics featured an East-Asian-looking boy War Master who accompanied the War Doctor for a time during the Time War, and has occasionally made appearances in other Titan comics.
177* The DWM strips also featured a future incarnation of the Doctor physically based on Creator/NicholasBriggs in Seventh Doctor comic "Party Animals" (with another character impersonating him in Eighth's era), making his Doctor from ''AudioPlay/DoctorWhoAudioVisuals'' DWM canon.
178* The three incarnations of Franchise/IrisWildthyme who appear in the Eighth Doctor Adventures were physically based on Creator/BerylReid, Shirley Bassey, and the young Jane Fonda. When she subsequently appeared in Big Finish, she was voiced by Katy Manning.
179* In ''[[Recap/NewSeriesAdventuresEnginesofWar Engines of War]]'', the Doctor, of course, gets a reference here and there about past lives, but Karlax regenerates from a somewhat wiry white man into a more tall, dark and muscular incarnation.
180* One recurring original Big Finish character is a Time Lord criminal who has all of their previous incarnations still active in their mind, and is identified by the number of incarnations currently present (i.e. the One, the Two, the Three, and so on). Four of their incarnations have appeared in person: the Eight (Tim [=McMullan=]), the Nine (John Heffernan), the Eleven (Mark Bonnar), and the Twelve (Julia [=McKenzie=]).
181* Also original to Big Finish is Cardinal Ollistra (Jacqueline Pearce), who features in stories set during the Time War. ''The Side of the Angels'' introduced her predecessor (Carolyn Pickles), who had regenerated before the war. Pearce passed away in 2018, but the Carolyn Pickles incarnation was eventually reintroduced to the Time War beginning in 2022, the explanation being that this past Ollistra was recreated from the Matrix supercomputer (essentially the sum of all Time Lord memory) to work in Gallifrey's War Room whilst the current Ollistra led operations off-world.
182[[/folder]]
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