Alistair Fraser

Initially stern and ruthless, but in reality kind and forgiving, the Twelfth Doctor was the first incarnation of the Doctor's new regeneration cycle, bestowed upon him by the Time Lords at Clara Oswald's urging at the end of the Siege of Trenzalore.
Assured of the survival of Gallifrey, the Doctor was no longer chained down by guilt, becoming a less amiable character, as he no longer needed to cover the pain of what he thought was the extinction of the Time Lords, with a withdrawn attitude who habitually questioned his own goodness. He often dispensed with niceties in a tense situation, becoming cold and calculative when needed. However, despite his ruthless exterior, the Doctor was actually deeply caring and empathetic, always striving to help others for the sake of being kind.
It was not until his first battle with Missy that the Doctor resolved his morality crisis, realising he was simply "an idiot with a box and screwdriver" who went around helping others. Following this, the Doctor began to show his lighter side more clearly and forged a closer bond with Clara. After her death, he spent four and a half billion years in his confession dial to reach Gallifrey due to Rassilon's concern with the Hybrid. Seeking revenge, the Doctor broke his own moral codes and unleashed his wrath upon the Time Lords in an ultimately futile attempt to save Clara, losing his memories of her as a price for his reckless actions.
After a final reunion with River Song, the Doctor was charged with guarding Missy in a vault at St Luke's University with Nardole. Sometime into this role, he began tutoring Bill Potts, who soon became his travelling companion, with Nardole joining them after an invasion by Monks. When testing Missy's rehabilitation resulted in Bill becoming a Cyberman, Missy leaving with the Saxon Master, and Nardole having to be left behind, the Doctor was mortally wounded in battle against the Cybermen.
Trying to halt the regenerative process after growing weary of constantly changing personas and losing companions, the Doctor crossed paths with his original incarnation and the Testimony, and was encouraged to regenerate by glass avatars of Bill and Nardole. Accepting his impending regeneration and his responsibility to life itself, the Doctor used his last moments to give his successor some words of advice, willingly accepting to carry on being the Doctor before finishing his regeneration into a female body.
== Psychological profile ==
=== Personality ===
Burdened with a never ending anger, (COMIC: Doorway to Hell) and a fear of what his rage was capable of, (TV: Into the Dalek) the Twelfth Doctor started his journey as a gruff yet compassionate man, (TV: Mummy on the Orient Express, Dark Water) who grew to embrace a more goofier side of himself, (TV: The Doctor's Meditation, The Zygon Invasion) until he became a true paragon of kindness and hope. (TV: The Doctor Falls, Twice Upon a Time) However, he never softened from his harsh attitude to those he saw as impulsive and reckless due to their shortsightedness, (TV: The Eaters of Light) but would try to inspire his foes to better themselves when he could. (TV: Deep Breath, Into the Dalek, Time Heist, The Woman Who Lived, The Zygon Inversion, Thin Ice, The Lie of the Land, The Doctor Falls)
With his main impetus for many adventures being to stimulate his scientific curiosity, (TV: Listen) the Doctor would be forever enthralled by the strange beauties he found in a universe that birthed grand creations. (TV: Into the Dalek, Kill the Moon, Under the Lake, Smile) However, beneath the fierce determination and adventurous persona, the Twelfth Doctor was a weary man who would succumb to despair when pushed to the brink, (TV: The Girl Who Died, Heaven Sent, Extremis, The Doctor Falls, Twice Upon a Time) feeling ostracised from a universe that didn't "see" him. (TV: Deep Breath)
Blunt to the point of insensitiveness, (TV: Into the Dalek, Robot of Sherwood, Listen, The Caretaker) but reluctant to lie to alleviate a situation, (TV: Listen) the Doctor would allow actions to prove a point instead of false praise, (TV: Kill the Moon) though he knew the importance of giving people the hope they needed to ensure their survival. (TV: Flatline) Though he tried to avoid pessimism, (TV: Time Heist) the Doctor would not give his sympathies lightly. (TV: Dark Water, The Lie of the Land, The Eaters of Light) He could also be oblivious to his faults, while criticising the same faults he saw elsewhere. (TV: Deep Breath, Robot of Sherwood)
He struggled to disguise himself in the mundane world, failing to hide his alien nature by openly calling people "humans", (TV: The Caretaker, Empress of Mars) and had a tendency to resolve his problems with explosions, (TV: Robot of Sherwood, The Witch's Familiar, Before the Flood, Smile, The Pyramid at the End of the World, The Doctor Falls) which he chalked up as a "childish impulse". (TV: Smile) While he would not run from danger, (TV: Under the Lake) he would hide from his shame, (TV: The Magician's Apprentice) and shirk his responsibilities to indulge in more excitable activities, (TV: The Doctor's Meditation, Smile, Oxygen, The Eaters of Light) having trouble ignoring the call for adventure. (TV: Mummy on the Orient Express)
After struggling with the inner turmoil of his questionable morality (TV: Into the Dalek) and how his action could lead to devastating consequences, (TV: The Magician's Apprentice, The Girl Who Died) the Doctor made peace with himself, (TV: The Husbands of River Song) embracing his role as both warrior and protector, (TV: Empress of Mars, The Eaters of Light) even growing lax enough to use the contemporary slang (TV: The Return of Doctor Mysterio, Thin Ice, Oxygen) he had previously looked down upon. (COMIC: Terrorformer)
The Doctor also hoped to one day find Gallifrey and reacted with devastation when his hope of finding it turned out to be a false lead. (TV: Death in Heaven) When he finally did manage to find his way to Gallifrey after enduring "4.5 billion years" of torture within his confession dial, he first returned to his old barn hideaway in the Drylands and then lead a coup against Rassilon to banish him and the High Council for their part in escalating the Time War. After using the Time Lords' technology to save Clara from the Quantum Shade, the Doctor fled from Gallifrey once again. (TV: Hell Bent)
Starting his life as a cynical man with a dry, acerbic wit, brutal honesty and fierce internalised anger, the Twelfth Doctor adopted a less caring attitude and a more practical nature, (TV: Deep Breath, The Caretaker, Dark Water) even claiming that he brought Clara with him to care for others for him (TV: Into the Dalek) and to nod along with his ideas. (TV: Listen) Despite coming across as uncaring, with a complete disregard for social niceties, he would fight to protect those in his care and would react with devastation if harm befell them (TV: Deep Breath, The Magician's Apprentice, Face the Raven, World Enough and Time) or if he caused them emotional grief due to overestimating how they could handle a situation. (TV: Kill the Moon) He would also regret the deaths of good people, especially if the survivors displayed an unpleasant attitude. (TV: Flatline)
Preferring to keep his softer side hidden under a "reputation [of] grumpiness", (COMIC: The Hyperion Empire) the Doctor would make people keep their emotions in check while they were distressed, (TV: Into the Dalek, Listen, Dark Water) making him come across as callous and dismissive, (TV: Deep Breath, Into the Dalek, Mummy on the Orient Express, In the Forest of the Night) which he refused to be apologetic for. (TV: Kill the Moon) He himself tried to avoid his own emotions by preferring to talk about subjects he enjoyed during emotional moments. (TV: Mummy on the Orient Express) However, behind his cold exterior, he was extremely self-reflective, to the point where he even questioned whether he was a good man, (TV: Into the Dalek) knowing that he often found himself in situations that forced him to make terrible decisions. (TV: Mummy on the Orient Express) Clara felt that "there were several layers to the Doctor's emotions." (PROSE: Silhouette)
Unlike his immediate predecessor, the Twelfth Doctor was not an affectionate individual, failing to return hugs, or protesting against them, (TV: Deep Breath, Listen, Time Heist) believing they were just another way to hide one's face. (TV: Death in Heaven) He also expressed a dislike of holding hands with others, though made an exception for Clara and Shona McCullough, (TV: Dark Water, Last Christmas) but he drew the line at performing a high five with Clara. (TV: Under the Lake) He was also uncomfortable with kissing, (TV: Dark Water) with even a peck on the check stunning him. (TV: Robot of Sherwood) However, he pecked Missy on the lips in gratitude for forcing him into self-reflection, (TV: Death in Heaven) kissed Clara's forehead while complimenting her brilliance in a moment of excitement, (COMIC: The Big Hush) and gave Meghan, a donkey he had befriended, a kiss on the head when he thought no one was looking. (PROSE: All the Empty Towers)
While he identified himself as a civilian, (TV: Into the Dalek) the Doctor did not hide how superior he felt with his intelligence, (TV: Under the Lake) unafraid to put people down with harsh comments upon meeting them, (TV: The Caretaker, Death in Heaven, Under the Lake) even claiming to have laughed at Orson Pink's name. (TV: Listen) While his personal views caused him to make unfavourable judgments of people upon meeting them, (TV: Robot of Sherwood, The Caretaker, Flatline) the Doctor knew not to be judgmental of alien behaviour, (TV: Flatline) and was quick to bond with fellow rebels. (TV: Robot of Sherwood, The Caretaker) However, he was not above saying how funny he found humans' "small brain[s]" (TV: Listen) and telling them to panic over their "short lifespan", (TV: The Caretaker) though he was quick to call out his own idiocy when he realised he had made a mistake. (TV: Time Heist, In the Forest of the Night, Last Christmas)
Because names were "not [his] area", (TV: Deep Breath) the Doctor could neglect to ask for names when he met someone, (TV: In the Forest of the Night) as he often chose to forget people, (TV: Into the Dalek, Last Christmas) or didn't have time to remember individual names. (TV: The Girl Who Died) As such, the Doctor made a habit of assigning nicknames to others based on their appearance, an accessory they carried or their profession, (TV: Deep Breath, Into the Dalek, The Caretaker) and would insist on addressing them as their nickname, such as calling Maths teacher Danny Pink "P.E." due to him being a former soldier, (TV: The Caretaker, In the Forest of the Night) though he dropped the nickname after Danny died. (TV: Death in Heaven) He also continued to address Rigsy as "Local Knowledge" when he was standing in front of him, (TV: Flatline) and when they reunited years later, only dropping the nickname when he learned Rigsy's life was in danger. (TV: Face the Raven)
However, after embracing the idea of being "just a bloke in a box", (TV: The Witch's Familiar) the Doctor employed a wackier demeanour, (TV: The Magician's Apprentice, The Zygon Invasion) wearing more casual clothing, (TV: The Doctor's Meditation, The Girl Who Died, Face the Raven) and relaxing by playing his guitar in the TARDIS. (TV: The Woman Who Lived, The Zygon Invasion) He made a better effort to be nicer through the use of apology cue cards (TV: Under the Lake, Face the Raven) in order to live up to the idea of who he thought "the Doctor" should be. (TV: The Witch's Familiar, Face the Raven, Hell Bent) He also began to accept Clara's attempts to hug him, (TV: Last Christmas, The Woman Who Lived) and even started hugging her on the odd occasion, (TV: The Magician's Apprentice, The Girl Who Died) as well as asking if he could hold her hand in frightful moments. (TV: Sleep No More) However, he did not entirely abandon his pragmatic ideology, (TV: Before the Flood, The Girl Who Died) and would resume being hostile when angered. (TV: The Witch's Familiar, Face the Raven, Hell Bent)
After having his mind wiped by a neural block (TV: Hell Bent) caused him to decide to simply be "an old man messing about in time and space", (PROSE: Haunted) the Doctor adopted a kinder approach to how he handled situations, though he did not wish to be seen as "sentimentalise[d]" (TV: Smile) and was still cynical on the never changing aspects of the universe. (TV: The Lie of the Land) While he retained his crossness, (TV: The Husbands of River Song, Smile) being against "cheerful[ness]" and "charm", (TV: Knock Knock, The Eaters of Light) he was more willing to laugh at the silliness he found in his travels (TV: The Husbands of River Song) and would be deliberately pedantic in the face of danger. (TV: For Tonight We Might Die, The Pyramid at the End of the World, Twice Upon a Time)
Though he was against vengeance, (TV: For Tonight We Might Die) the Doctor still stood in defiance of those "who contribute[d] nothing of worth to the world and crush[ed] the hopes and dreams of working people". (TV: The Husbands of River Song) Now content that "only idiots [had] the answers", (TV: Thin Ice) he was more comfortable with being open about his ignorance, (TV: The Pilot) and agreed that he was "completely out of [his] mind". (TV: The Return of Doctor Mysterio, Oxygen) While he "never notice[d] the tears", (TV: The Pilot) he was better at making friends, (TV: Knock Knock) even playing the part a playful jokester with Bill, (TV: Thin Ice) as he tried to avoid being serious. (TV: The Return of Doctor Mysterio)
Though he remained reluctant to initiate a hug at first, (COMIC: The Good Companion) the Doctor accepted being a hugger by the time he reunited with Maxwell Edison, giving an affectionate one to Max, (COMIC: The Stockbridge Showdown) and also embraced the chance to hug Bill after losing her in a conflict with the Cybermen. (TV: Twice Upon a Time)
Having accepted that "times end", the Doctor found the courage in himself to finally face his night on Darillium with River Song, embracing the bittersweet "happy ever after" for them that had previously been too hard to bear. (TV: The Husbands of River Song) After he left Darillium, the Doctor allowed Nardole to accompany him to avoid being lonely. (TV: The Return of Doctor Mysterio) While normally in control of himself and disciplined in his actions, (TV: Thin Ice) the Doctor's longing to travel again while guarding the Vault at St Luke's University led him to indulge in more impulsive and reckless actions that left his guard down. (TV: Smile, Oxygen, The Pyramid at the End of the World, World Enough and Time)
Even though he identified himself as a pacifist (COMIC: Terrorformer) and believed necessary evils to be a last resort, (COMIC: The Fractures) the Twelfth Doctor was unafraid to trade blows with others. (TV: Deep Breath, Robot of Sherwood, Hell Bent, Thin Ice, World Enough and Time) Hoping to find danger wherever he went, (TV: Mummy on the Orient Express) he branded solutions that he found easy to be "boring", (TV: The Caretaker, Thin Ice) though he did appreciate how the occasional anti-climax was good for his health. (TV: Into the Dalek)
He was willing to place his companions in danger if it meant appeasing his curiosity, often leaving them out of the details in his plans, or using them to distract attention away from himself. (TV: Deep Breath, Time Heist, The Caretaker, Kill the Moon, Mummy on the Orient Express, The Lie of the Land) However, if he believed the situation was too dangerous for them, the Doctor would send his companions to the safety of the TARDIS while staring down the threat alone. (TV: Listen, Kill the Moon, Before the Flood, Smile, Twice Upon a Time)
Viewed as an egotist by Clara Oswald, (TV: Robot of Sherwood) the Doctor had a consistently anti-authoritarian attitude, only ever asking who was in charge so he would "know who to ignore", (TV: Under the Lake) seeing it as his place to give the explanations, (TV: Last Christmas) and also did not like it when somebody else tried to "do the naming." (TV: Sleep No More) As he "hardly ever listen[ed] when other people [were] talking", (TV: The Return of Doctor Mysterio) the Doctor tended to stop listening to ongoing conversations when he lost interest, (TV: Flatline, The Woman Who Lived) as he saw only himself as being "someone worth talking to". (TV: Before the Flood) He enjoyed his privacy, (TV: Robot of Sherwood, Kill the Moon, Face the Raven) and preferred to be left alone when on a mission. (TV: The Caretaker, Under the Lake)
The Doctor also showed a strong compassionate streak, willing to put himself in a dangerous situation in the place of stranger as equally as a dear friend, (TV: Mummy on the Orient Express, Oxygen) and make enormous personal sacrifices simply to liberate others from suffering. (TV: The Witch's Familiar, Face the Raven, The Doctor Falls) He would also try to avoid harming those who were not in control of their actions, as well as defend them from their captors or those who would cause them further harm. (PROSE: Silhouette, The Crawling Terror) He was just as quick to forgive those that had wronged him, (TV: Dark Water, The Woman Who Lived, The Zygon Inversion) and try to make peace with even his oldest enemies, (TV: The Witch's Familiar, Extremis) believing that while "passion [fought], [it was] reason [that won]." (TV: Thin Ice)
While he described himself as having had "sophistication and timeless sartorial elegance" restored, (COMIC: Terrorformer) the Twelfth Doctor was not above acting childish by competing with others, (TV: Robot of Sherwood, Last Christmas, The Woman Who Lived) or deliberately annoying someone. (TV: The Caretaker) He also let down his gruff guard to do a victory dance after moving the shrunken TARDIS off a train line with his hand, (TV: Flatline) and ecstatically steer Santa Claus's sleigh. (TV: Last Christmas) Kevin Alperton noted that, while the Doctor looked old, he had an energy to him that made him seem younger and different. (PROSE: The Crawling Terror)
Enjoying the "deep and lovely dark", the Doctor enthusiastically tried to find out the cause of his childhood nightmares, (TV: Listen) was delighted when he finally saw the Foretold, (TV: Mummy on the Orient Express) got giddy over possibly finding out the existence of ghosts, (TV: Under the Lake) was very eager to explore a mysterious house (COMIC: Playing House) and gleefully laughed as he sped a ship into British waters. (TV: The Lie of the Land)
Though he liked humanity for their optimism, (TV: Smile) the Doctor would insult humans when he saw them being slow-minded, greedy and violent, dubbing Earth the "planet of the pudding-brains." (TV: Deep Breath) Nonetheless, he tolerated the company of those who could engage with him intellectually, (TV: Mummy on the Orient Express, Death in Heaven, Last Christmas, Under the Lake, The Pyramid at the End of the World) unless they got on his bad side first, (COMIC: The Fractures) and claimed to respect humanity enough to allow it to determine its own future without any interference from him, (TV: Kill the Moon) giving insight and knowledge to those who would listen, while still leaving the decision up to them. (TV: Thin Ice) As with his previous incarnation, the Twelfth Doctor also liked people who got straight to the point. (TV: Last Christmas) He though that someone who wasn't scared in a life-threatening situation was "an idiot", (TV: Last Christmas) though was aware that giving in to fear "[did]n't help", (TV: Knock Knock) and would have them focus on their chances of survival, however slim, to encourage them to prevail. (TV: The Magician's Apprentice, Heaven Sent)
As with his previous incarnations, he relied on his companions to keep him from succumbing to his darker nature, but, unlike his predecessors, the Twelfth Doctor actively praised them for it, even claiming that Clara Oswald needed a "raise" for dealing with him, (TV: Into the Dalek) and telling Bill Potts that people like her encouraged him to put up with the rest of humanity. (TV: The Lie of the Land) He also enjoyed it when his companions asked him obvious questions, claiming that it helped him think, (PROSE: The Blood Cell) but disliked it when they pointed out mistakes he made, (TV: The Return of Doctor Mysterio) and identified them as his "social interface with the human race", (COMIC: The Fractures) and the main reason he didn't need an army. (TV: Death in Heaven)
While he made it his mission to always stay with those he could help to be "kind", (TV: The Doctor Falls) the Twelfth Doctor was more willing to leave a situation if he believed he had nothing to contribute, justifying himself by pointing out the dangers of everyday life and how he was not an authority figure, (TV: Kill the Moon, Last Christmas, The Girl Who Died) though he would justify his actions with the phrase "daddy knows best". (TV: The Zygon Inversion)
The Twelfth Doctor preferred to live in the moment, (TV: Deep Breath, Kill the Moon) where "everything is huge, everything is so important, every detail, every moment, every life clung to[gether]." He claimed to the Half-Face Man that the people of Earth "[were] never small to [him]," and, unlike his tenth incarnation, he didn't think he deserved a reward or a "promised land" because he had "already [gone] a very long way" to protect the people, (TV: Deep Breath) becoming a lost soul beyond redemption. (TV: Face the Raven) He also cared for mortal lives, (TV: Thin Ice) however brief they seemed to him. (TV: The Woman Who Lived)
By his own testament, the Twelfth Doctor did not suffer fools gladly, (PROSE: The Blood Cell) nor did he tolerate poor manners, even when held at gunpoint, and believed that one should make requests politely, (TV: Into the Dalek) as well as avoid bad language, (TV: Kill the Moon, Thin Ice) and gloating. (GAME: The Doctor and the Dalek) He "[found] it best to keep an open mind, unclouded by the opinions of others", favoured the direct approach when he encountered an obstacle, and believed it was always best to assume and plan for the worst-case scenario. (PROSE: Silhouette)
The Doctor was so stubborn in his beliefs that he would deny any evidence that contradicted his statements, even when the proof was in front of him. (TV: Robot of Sherwood, Listen, Dark Water) He believed that "hardly anything [was] evil, but [that] most things [were] hungry", and that "hunger look[ed] very [much] like evil from the wrong end of the cutlery". (TV: The Pilot) While he believed that "a good death [was] the best anyone [could] hope for", (TV: The Girl Who Died) he didn't think it was possible to "die well". (TV: For Tonight We Might Die) When giving life advice, the Doctor would say to laugh hard because everything was "always funny", to run fast "like hell" because people always needed to, to never fail at being kind, and to always make amends if they acted cruel and cowardly. (TV: Hell Bent, Twice Upon a Time)
He also viewed pain as a gift, believing that "without the capacity for pain, [one] can't feel the hurt [they] inflict," (TV: Death in Heaven) and also thought that "a bit of shame never hurt anyone," (TV: The Witch's Familiar) and that true immortality was "everybody else dying". (TV: The Girl Who Died) He also believed that one could always find something to be distracted by, (TV: Into the Dalek) felt invasions of Earth were justified after hearing about the horror film Alien, (TV: Last Christmas) and expressed the opinion that an enemy was "just a friend [one] didn't really know yet". (WC: Prologue) He believed that education came fastert in life threatening situations, and claimed that begging "wasn't [his] style", (COMIC: Terrorformer) unless his friends were threatened. (TV: The Magician's Apprentice)
The Doctor did not see himself as a "hero", merely someone who was "just passing the time" by passing by, (TV: Robot of Sherwood, Smile) but would answer distress signals, believing that he only saw "the true face of the universe when it [was] asking for [his] help", (TV: Oxygen) and deemed the Earth as his protectorate. (TV: Twice Upon a Time)
The Doctor held a veneration of the dead, (TV: Before the Flood) ceasing all insults towards Danny Pink after being told of his passing, (TV: Dark Water) was morally outraged with the Fisher King for using the souls of the dead as transmitters for his armada, (TV: Before the Flood) and become hurt when he thought the Testimony Foundation had duplicated Bill after she "gave her life so that people she barely knew could live". (TV: Twice Upon a Time)
Though he did not know the reason, believing it to simply be his old age, (PROSE: The Blood Cell) the Twelfth Doctor expressed a strong dislike for soldiers and military figures, (TV: Into the Dalek, The Caretaker, Death in Heaven) being "decidedly prickly in his dealing with anything remotely military", (PROSE: The Crawling Terror) though claimed his disdain was flexible in a crisis, (PROSE: The Blood Cell) and he eventually lost his disdain as he grew kinder. (TV: The Lie of the Land) He was also easily annoyed by swashbucklers who did not take things seriously and insisted on fighting pointless battles, (TV: Robot of Sherwood, The Girl Who Died) and held a disdain towards businesspeople who valued profit above anything else. (TV: Under the Lake, Sleep No More)
The Doctor was also "against" bantering. (TV: Robot of Sherwood, The Woman Who Lived) didn't like being saluted, (TV: The Caretaker) wasn't "a fan" of the Tivolians, (TV: Before the Flood) and disliked losing, even in a friendly game of chess. (COMIC: Doorway to Hell) He claimed to dislike the colour of his kidneys, (TV: The Time of the Doctor) karaoke, mimes, (TV: Deep Breath) tanks, (TV: The Magician's Apprentice) songs that got stuck in his head, (TV: Under the Lake) racism and talking in the cinema. (TV: The Lie of the Land) He voiced a hatred for being wrong in public, (TV: Deep Breath) babysitters, (TV: Into the Dalek) Candy Crush, (PROSE: The Blood Cell) money, (COMIC: Terrorformer) missing the obvious, (TV: Last Christmas) pantomime, (PROSE: Behind You) cyclopes, (COMIC: Doctor on the Menu) vikings, (TV: The Girl Who Died) gardening, (TV: Heaven Sent) Christmas, (COMIC: Relative Dimensions) being sure of something, "lying-down people", (TV: The Husbands of River Song) and "brave people". (TV: The Eaters of Light)
While he claimed to hate not knowing about something when faced with the Teller, (TV: Time Heist) he was known to admire the unexplainable. (TV: Flatline, Under the Lake) He also told Ohila that, while he trusted her, he didn't necessary like her, (WC: Prologue) and confessed to Petronella Osgood that he considered London to be a "dump". (TV: The Zygon Inversion) However, just before his regeneration, the Doctor denounced hate as "always foolish", and proclaimed that "love [was] always wise." (TV: Twice Upon a Time)
While he did not dwell on the subject much, the Twelfth Doctor was still haunted by the War Doctor's actions in the Last Great Time War, and claimed to hear "more screams than anyone could ever be able to count" whenever he closed his eyes. When he learned that all Bonnie truly wanted was a pointless war between humanity and the Zygons, he went into a furious and grief-stricken tirade by telling her that he knew what war was really like and that he would not allow her to lead others to their deaths. (TV: The Zygon Inversion) While he disliked guns, (TV: The Doctor Falls) he noted that it was foolish to disregard them when they were useful, (PROSE: The Crawling Terror) and was willing to utilise them when he felt the need to, but would immediately discard them once they was no longer needed. (TV: The Witch's Familiar, Hell Bent)
While he didn't like to eat liver, (TV: Deep Breath) pears, (TV: Hell Bent) and fish, (TV: Smile) he did have an enjoyment for sausages, (TV: Deep Breath) candy floss, (PROSE: All the Empty Towers) porridge, (PROSE: Deep Time) sherbet lemons, (TV: The Woman Who Lived) and Chinese food. (TV: Knock Knock)
The Twelfth Doctor liked roundels, (TV: Deep Breath) working under pressure, (TV: Into the Dalek) "a show-stopping entrance", (COMIC: Terrorformer) a "good locked-room mystery", (TV: Flatline) puppets, (TV: The Girl Who Died) the title "Doctor Mysterio", "pressing buttons and switches", (TV: The Return of Doctor Mysterio) and rivets. (TV: Smile) His "lucky number" was 12, (TV: The Doctor's Meditation) and he considered "maths and alcoholic beverages" to be the "best way to spend the morning". (TV: For Tonight We Might Die)
He was interested in Maths (TV: The Caretaker) and insects, (TV: Knock Knock) and had a liking for books, particularly ones about Garfield, reacting with anger towards those he believed burned books, and also believed that women who liked books to be the best kind. (PROSE: The Blood Cell) When he redecorated the TARDIS control room, he included numerous shelves full of a variety of books, and a recliner to enjoy reading them in, (TV: Deep Breath) sometimes even leaving his books scattered around the console room. (TV: Listen, Kill the Moon)
Not only did he want a Ferrari car, (TV: The Woman Who Lived) he also took the chance to enjoy "poncing about in a big plane". (TV: The Zygon Invasion) He also enjoyed bicycles because they reminded him of Call the Midwife. (PROSE: The Blood Cell) While he thought football was a "boring sport", he considered darts to be "something worth practicing". (TV: For Tonight We Might Die)
While he could forget the consequences of time travelling when carried away, (TV: Listen) the Twelfth Doctor was unwilling to alter the Web of Time, (TV: Dark Water) fearing that the ramifications from the tiniest changes could be catastrophic, spreading "carnage and chaos across the universe like ripples on a pond," (TV: Before the Flood) though he preferred to create "ripples" instead of "tidal waves." (TV: The Girl Who Died)
He believed it was okay to send people to their deaths if history recorded them as deceased, (PROSE: The Crawling Terror) and told Mason Bennett that he "[couldn't] just go back and cut off tragedy at the root because [then] [he'd] find [him]self talking to someone [he'd] just saw dead on a slab, [and] then [he] really [would] see ghosts". (TV: Before the Flood) However, he knew "to hold [himself] to the mark" on how to save a single soul despite the Web of Time due to Donna Noble's words to his tenth incarnation at Pompeii, (TV: The Girl Who Died) and was willing to change certain points he encountered if "even a ghastly future [proved] better than no future at all". (TV: Before the Flood) Emotionally broken after the death of Clara, the Doctor used an extraction chamber on Gallifrey to save her from the Quantum Shade, and also attempted to prevent her from returning to her death, despite it being a fixed point in time, (TV: Hell Bent) and engineered events to prevent Archibald Hamish Lethbridge-Stewart and a German soldier from killing each other, claiming that "a couple fewer dead people on the battlefield" would not "hurt". (TV: Twice Upon a Time)
The Twelfth Doctor was practical regarding death, being quick to recover what he could when there was nothing he could do to save someone, instead focusing on what he could control when all hope seemed lost, (TV: Into the Dalek, Time Heist) even being willing to sacrifice others when he had broader goals in mind, (TV: Into the Dalek, Before the Flood) sometimes even devising a plan in which others' skills would prove useful. (TV: Time Heist) Though he initially stated that murder was against his "programming", (TV: Deep Breath) the Doctor knew there were "situations when the options available [were] limited" and death was unavoidable, (TV: Thin Ice) and was willing to allow a few inevitable deaths if it meant saving the majority, acting like a pragmatist that would not hesitate to abandon someone whose fate was already sealed, nor mourn for an ally until his objective had been reached. (TV: Into the Dalek, Time Heist, Kill the Moon, Mummy on the Orient Express, Before the Flood, Sleep No More, Thin Ice) However, the Doctor was still willing to go out of his way to try and save people if their deaths were not an immediate inevitability, even if it was the life of a caged bird. (WC: A Hero like the Doctor)
While he was adamant not to kill out of hatred, (TV: Time Heist) especially when conflicts could be resolved diplomatically, (TV: Deep Breath, The Zygon Inversion) the Doctor was willing to kill to spare others from the burden of taking a life, (TV: Death in Heaven) or when acting in extreme selfishness and being assured they could recover with a regeneration. (TV: Hell Bent) He once gave permission for UNIT to engage Zygons with lethal force, so long as they kept fatalities to a minimum, (TV: The Zygon Invasion) and left Ron Cordell and some Skinks to be devoured by a black hole after tampering with the black hole drive's containment field. (COMIC: Pirates of Vourakis) He also viewed certain creatures as expendable, as he wanted to kill a Kantrofarri to save Clara from slowly being devoured by it, (TV: Last Christmas) and crushed a Love Sprite under his heel to prevent it attacking him. (TV: The Girl Who Died)
Diagnosed with "Attention Deficit [Disorder]" by Clara, (TV: The Doctor's Meditation) the Doctor would include mundane outcomes in his summarisation when explaining the consequences of actions taken, (TV: Deep Breath, The Girl Who Died, The Zygon Invasion, The Zygon Inversion, The Pyramid at the End of the World) had trouble recognising people's age group, (TV: Into the Dalek, The Caretaker, Kill the Moon, Last Christmas, The Return of Doctor Mysterio) forgot people he had only recently met, (TV: Kill the Moon, In the Forest of the Night, Last Christmas) and was also shown to have a poor concept on the passage of time. (TV: The Doctor's Meditation, The Magician's Apprentice, The Zygon Inversion)
Because of his more celibate nature, (TV: Dark Water) he failed to notice when someone was asking him if they looked attractive, (TV: Into the Dalek, Time Heist, The Woman Who Lived) but did call a female Tyrannosaurus rex a "big sexy woman" while in a post-regenerative state. (TV: Deep Breath) He also considered Rona Bellows to be "sexy", (TV: Last Christmas) and shared a mutual attraction with River Song. (TV: The Husbands of River Song) He didn't care about sexuality, instead being bothered by people hating each other, and didn't approve of revenge either. (COMIC: The Swords of Kali)
He claimed that taking charge was his "superpower", (TV: Time Heist) and listed "investigating", "playing with time" and "resistance" among his specialities, (COMIC: Terrorformer, The Swords of Kali, The Fractures) with Clara also adding "interfering and infuriating" to the list. (COMIC: Terrorformer)
Feeling it was his house, (TV: Flatline) the Doctor redecorated his console room to have bookshelves, chairs and workbenches. (TV: Deep Breath, The Caretaker) He told Bill Potts that the TARDIS was a "technological marvel", "science beyond magic", and "the gateway to everything that ever was, or ever can be." (TV: The Pilot) He did, however, occasionally enact violence against his TARDIS out of frustration, striking its column with his fists hard enough to damage it after discovering Missy's coordinates to Gallifrey had been a lie, (TV: Death in Heaven) and later struck the console with enough force to believe he had broken a finger. (PROSE: Deep Time)
Initially thinking he was "overbearing, manipulative and consciously aware of his own intelligence", (TV: Time Heist) the Twelfth Doctor came to see himself a "scary, handsome genius from space" (TV: Smile) who was "adorable, hugely intelligent, but still approachable". (TV: The Pyramid at the End of the World)
While he preferred him to other incarnations, (COMIC: Four Doctors) the Twelfth Doctor disliked his immediate predecessor for his enjoyment of bow ties and fezzes, and overuse of the word "cool". (COMIC: Terrorformer) However, upon seeing Adrian Davies, a teacher at Coal Hill School with a resemblance to his eleventh incarnation, the Doctor, mistaking Adrian as Clara's boyfriend, arrogantly assumed that Clara was dating Adrian because of his uncanny resemblance to "a certain dashing young time traveller", reflecting more favourably on his predecessor. (TV: The Caretaker) Additionally, he was, at times, critical of his previous incarnations' clothing, thinking that his fourth incarnation's scarf "looked stupid", (TV: Deep Breath) and regarded the Eleventh Doctor's fondness for bow ties as "a bit embarrassing", (TV: Time Heist) though complimented Osgood's bow tie as "nice". (TV: Death in Heaven) According to Affinity, the Doctor kept his predecessors "lodged in his head", and held a low opinion of them and himself, (PROSE: Silhouette) even comparing a Multi-Doctor Event to The Krankies. (WC: Doctors Assemble!)
While he reflected that the First Doctor was "not much fun", (PROSE: Full Stop) the Twelfth Doctor was delighted by some of his habits when he encountered him at the South Pole, such as still calling the TARDIS "the ship". However, he was embarrassed by the First Doctor's habit of making comments that were inappropriate in the Twelfth Doctor's eyes, especially when he threatened to give Bill a "jolly good smacked bottom" if she kept on swearing. (TV: Twice Upon a Time)
When he met his two previous incarnations, the Twelfth Doctor had a frosty accord with the Tenth Doctor, who refused to consider the twelfth incarnation as a future incarnation until the Blinovitch Limitation Effect confirmed he was. Conversely, the Eleventh Doctor was willing to accept him as his next incarnation and was happy to know he had more life in the future. While he degraded them as "manic pixie dream Doctors", the Twelfth Doctor expressed concern that the two would come to know him as the "scary Doctor". He held the Ninth Doctor in higher regards, saying the Continuity bomb could not find a timeline where he wasn't "fantastic". (COMIC: Four Doctors) In a later encounter with his tenth incarnation, the Twelfth Doctor referred to him as "Bambi", being dismissive of how overtly emotional he had been and having some embarrassment for his obsession with Rose Tyler, but seemed to retain a fondness for the Tenth Doctor's life. (COMIC: Vortex Butterflies) Even after undergoing a more positive outlook, the Twelfth Doctor still disliked the Tenth Doctor for his "excited puppy routine". (COMIC: The Lost Dimension)
The Twelfth Doctor held deep affection for Clara Oswald, considering her to be his best friend, (TV: Heaven Sent) and cared for her to the point that her betraying him couldn't make a difference to how he felt about her. (TV: Dark Water) His connection with her was so deep that, after her death by Quantum Shade, he respected her wishes to not target Ashildr for her role in Clara's death. (TV: Face the Raven) However, after spending four billion years in a temporal loop mourning losing her, (TV: Heaven Sent, Hell Bent) he became unhinged, deciding no one would stop him bringing Clara back, threatening all who tried to prevent him restoring her to life, even forcing the Eleventh General to regenerate, until events forced him to lose his memories of Clara. (TV: Hell Bent) When his memories of her were restored, he was delighted, thankful he could finally remember her face. (TV: Twice Upon a Time)
Although he tended to be dismissive of Nardole, (TV: Knock Knock, Oxygen, The Eaters of Light, Twice Upon a Time) the Doctor still took his advice in stock (TV: The Return of Doctor Mysterio, Oxygen) and chose to sacrifice his own life so Nardole could escape certain death. (TV: The Doctor Falls)
The Doctor also grew close with Bill Potts, making her his personal student while at St Luke's University, even going back in time to obtain pictures of her mother as a Christmas gift in gratitude for her gifting him a carpet, (TV: The Pilot) even though he did not like the carpet. (TV: Twice Upon a Time) He confided in Bill about his concerns over Missy and made it his personal mission to save Bill from death at the hands of the Cybermen. (TV: World Enough and Time) He also didn't like Bill seeing him physically vulnerable, going as far as not telling her about his blindness, (TV: The Pyramid at the End of the World) or his impending regeneration. (TV: The Doctor Falls)
Despite his grumpy nature, the Doctor had a soft spot for children, (TV: Face the Raven, Thin Ice) trying to help them to overcome their fears, (TV: Listen, The Doctor Falls) build them up when they thought little of themselves, (TV: In the Forest of the Night) and help their education. (TV: The Woman Who Lived) He would stop to help them when he saw them in need, (TV: Face the Raven) and would feel regretful if he felt he had let them down, (TV: Kill the Moon, The Magician's Apprentice) as well as great fury when finding babies unattended. (TV: The Return of Doctor Mysterio)
The Twelfth Doctor's hatred toward the Dalek species was rigid, with Clara describing it as "prejudice", (TV: Into the Dalek) though he did stop to mourn Lumpy, a Dalek that had deceived him into friendship. (GAME: The Doctor and the Dalek) He believed Daleks were incapable of change and was closed-minded as he dealt with their presence, and would refuse to help a Dalek unless his interests were peaked. After his act of fixing a malfunctioning "good" Dalek caused it to revert to "bad", the Doctor was almost pleased that his belief of there being "no such thing as a good Dalek" was vindicated. (TV: Into the Dalek) Despite his hatred of them, the Doctor admitted to the Governor that the Dalek Emperor "[was] nothing compared to your average mobile phone sales assistant". (PROSE: The Blood Cell)
He also held a disregard for the Cybermen, unceremoniously flattening two with his TARDIS. (GAME: The Doctor and the Dalek) He knew to be cautious around them, (TV: Face the Raven) though he would try to reason with the ones that were "fresh out the factory". (TV: World Enough and Time)
When Rusty the Dalek looked into the Twelfth Doctor's mind, he saw hatred and noted that the Doctor was "a good Dalek", while Clara believed the Doctor was trying to be a good man, (TV: Into the Dalek) and claimed that he "always care[d]" by the time of her death. (TV: Face the Raven) When questioned by Lisa Foster, Clara reluctantly admitted she thought the Doctor was "kind of [cool], in a strange sort of way", which Lisa interpreted as meaning "an uncool sort of way". (COMIC: The Fractures) Bill Potts once described the Twelfth Doctor as "part-cool professor, [and] part-cat chasing [a] laser pointer". (COMIC: The Promise)
While Ashildr considered the Doctor to be a "passionate and powerful Time Lord", (TV: Hell Bent) Perkins noted his inability to decide whether the Doctor was a genius "or just incredibly arrogant", (TV: Mummy on the Orient Express) with Danny Pink, in complete bitterness for his need to feel the pain he inflicted, compared the Doctor to a "blood-soaked old general". (TV: Death in Heaven)
The Oracle described the Twelfth Doctor as "a man of taste and discrimination," (PROSE: The Blood Cell) while Orestes Milton believed the Doctor "affect[ed] an air of ignorance and indifference, but beneath it [were] undercurrents of knowledge and curiosity". (PROSE: Silhouette) Daughter of Mine considered him "the worst". (WC: Shadow of a Doubt)
Much as his tenth incarnation expressed, the Twelfth Doctor associated regeneration with death, recalling Snowcap as "the place where [he] died". He viewed the process as "huge, [and] terrible", with his self-preservation preventing his memories of the experience from consuming him. (COMIC: Blood and Ice) He also believed that regeneration was to be used only when completely necessary, and to use it to fix a broken toe was "a waste of a life". (PROSE: The Blood Cell) Despite his beliefs, when pushed to extremes, the Doctor was willing to force a fellow Time Lord to regenerate if it benefited him. (TV: Hell Bent)
When faced with the prospect of dying without regenerating while facing the Fisher King, the Doctor, though initially appearing distraught, quickly dismissed any concern, saying that he "had a good innings", and labeling himself a mere "clerical error" of a regeneration. (TV: Before the Flood) When cornered by the Veil, the Doctor admitted that he was afraid of dying, (TV: Heaven Sent) but was unafraid to sacrifice himself for the greater good. (TV: The Pyramid at the End of the World, The Doctor Falls)
After the regeneration progress was triggered by an attack from a Mondasian Cyberman, the Doctor, angry at the idea of constantly "being other people", refused to change into his next body. (TV: The Doctor Falls) When confronting the glass avatars of Bill Potts and Nardole, the Doctor confessed he was "tired of losing people" and, feeling "there [had] to be an end", seeing his long life as "[an] [empty] battlefield, because everyone else [had] fallen". After a final cuddle with the glass avatars, the Doctor decided it was "time to leave the battlefield", and entered the TARDIS alone. Upon looking at the "silly old universe" on the TARDIS scanner, the Doctor, realising that the "more [he] save[d] it, the more it need[ed] saving", decided that "one more lifetime wouldn't kill anyone". Giving instructions to his successor to "never be cruel, [and] never be cowardly", that "hate [was] always foolish, and [that] love [was] always wise", to "never fail to be kind", and to never reveal their name, the Doctor "let [himself] go" and regenerated into a female body. (TV: Twice Upon a Time)
=== Habits and quirks ===
Much like his seventh incarnation, the Twelfth Doctor spoke with a Scottish accent, (TV: Deep Breath) which was noted by Bernice Summerfield to be Glaswegian in contrast to the Seventh Doctor's Highlands one. (PROSE: Big Bang Generation) Fully embracing his Scottish accent as an entitlement to complain about things, the Doctor would put down the English, (TV: Deep Breath) and was known to "go all Scottish" when annoyed. (TV: The Magician's Apprentice)
With his accent, he was prone to boasting about himself, (TV: Robot of Sherwood, Mummy on the Orient Express, Under the Lake, The Girl Who Died,The Woman Who Lived, The Return of Doctor Mysterio, Oxygen, The Pyramid at the End of the World, The Doctor Falls) making intimidating threats, (TV: Flatline, Before the Flood, Face the Raven, Heaven Sent, Extremis, Twice Upon a Time) or just stating the apparent ineffectiveness of others' actions in a subtle tone. (TV: Deep Breath, Into the Dalek, Death in Heaven, The Magician's Apprentice, The Eaters of Light) However, when truly angered, the Doctor would quietly hiss with a rage hidden behind unnerving tranquility. (TV: Dark Water, Death in Heaven, The Witch's Familiar, Face the Raven, Hell Bent)
When proposing a theory or plan, the Doctor would use words such as "question", "proposition" or "proposal", and would begin his conclusion with "answer", "conjecture", "conclusion" or "plan". (TV: Deep Breath, Listen, The Witch's Familiar, The Pilot, Smile, Thin Ice) After working out the important questions and the answers in his head, he waited for others to come to the same conclusion, only to give out the answer after they proposed the wrong reactions. (TV: Deep Breath, Kill the Moon, Mummy on the Orient Express, In the Forest of the Night, Last Christmas, Under the Lake, Sleep No More, Smile)
During his early life, the Twelfth Doctor would often accuse things, even other people, of developing faults, errors and malfunctions when he didn't think they were working the way he though they were meant to, (TV: Deep Breath, The Caretaker, Mummy on the Orient Express, Dark Water) and would call people "pudding-brains", or "pudding headed", when he found them slow-minded or stupid. (TV: Deep Breath, Robot of Sherwood, Flatline)
When in a moment of realisation or thinking intensely, the Doctor would often tell people to "shut up/it", regardless if others would be speaking or not. (TV: Deep Breath, Listen, Time Heist, The Caretaker, Face the Raven, The Pilot) He would also issue the instruction to those who had earned his ire, regardless of their status, occupation or how petty the ire was, (TV: Robot of Sherwood, Death in Heaven, Last Christmas, The Return of Doctor Mysterio) and when he wished to avoid a subject of conversation. (TV: Dark Water, Death in Heaven, The Pilot, World Enough and Time)
When instructing someone to pay attention, the Doctor would command them to "listen". (TV: Listen, The Caretaker, Flatline, The Zygon Invasion, The Zygon Inversion, Knock Knock, Extremis, The Eaters of Light, World Enough and Time, The Doctor Falls) He also made a habit of saying, "Well...", to start his sentences. (TV: Deep Breath, Into the Dalek, Dark Water, The Doctor's Meditation, Sleep No More, The Return of Doctor Mysterio, Smile, The Doctor Falls)
He frequently called those who annoyed him with their apparent unintelligence and poorly thought out actions an "idiot", (TV: Into the Dalek, The Caretaker, Dark Water, Under the Lake, The Lie of the Land, Empress of Mars) and even used the term to describe himself. (TV: In the Forest of the Night, Death in Heaven, Twice Upon a Time)
Wanting to avoid using foul language, (TV: Kill the Moon) the Twelfth Doctor often used "hell" as an intensive, (TV: The Girl Who Died, The Zygon Inversion, Face the Raven, Hell Bent, The Pilot, Oxygen, Extremis, The Pyramid at the End of the World, Empress of Mars, The Eaters of Light) and spoke the name of God in vain. (TV: Mummy on the Orient Express, Last Christmas, Under the Lake, The Girl Who Died, The Zygon Inversion, Face the Raven, The Husbands of River Song, The Doctor Falls)
The Doctor often made puns, (TV: Into the Dalek, Kill the Moon, Flatline, The Magician's Apprentice, The Witch's Familiar, The Zygon Inversion, The Husbands of River Song, The Return of Doctor Mysterio, Twice Upon a Time) though hypocritically would complain about others making them. (TV: The Woman Who Lived)
Never one to miss the chance for a quotation, the Doctor often reciting quotes and scriptures that matched his current predicament, be they from media, music or literature. (TV: Deep Breath, The Caretaker, The Zygon Inversion, Sleep No More, Oxygen, The Pyramid at the End of the World)
Like his fourth incarnation, the Twelfth Doctor would talk directly to himself, (TV: Mummy on the Orient Express, Under the Lake, Twice Upon a Time) and act like his was being watched by someone when there was no evidence of him having company. (TV: Deep Breath, Before the Flood, Heaven Sent) He was also known for giving soliloquies. (TV: Listen, Heaven Sent, Smile, Oxygen, The Pyramid at the End of the World, Twice Upon a Time)
Much like his predecessor, the Twelfth Doctor used hand gestures to extenuate a point, but applied more dedication to his movements as he stood firm, spoke with conviction, and punctuated his points across with a pointed index finger, though he would become more spontaneous when thinking intensely. (TV: Time Heist, Last Christmas) He typically stood with one leg stretched forward and his hands rested together in front of him. (TV: Deep Breath, Into the Dalek, Flatline, Before the Flood, Sleep No More, The Husbands of River Song) Commonly, he would stick out his index and baby fingers with his thumb and lower his middle and ring fingers, with the gesture being so associated with him that it was depicted as his stance on a wanted poster drawing (TV: The Woman Who Lived) and an advertisement poster designed by Zip Betterblast. (COMIC: Time and PR in Space)
In a deviation from his stagnant posture, he would wring his hands together in a fidgety manner, (TV: Into the Dalek, Listen, Mummy on the Orient Express, Last Christmas, The Doctor's Meditation, The Witch's Familiar, Under the Lake, The Girl Who Died, The Zygon Inversion, The Return of Doctor Mysterio, The Pilot, The Eaters of Light) but also kept his fingers interlocked together when explaining or contemplating something. (TV: Deep Breath, Into the Dalek, Time Heist, Kill the Moon, Last Christmas, The Woman Who Lived, The Zygon Inversion, Face the Raven, The Husbands of River Song, The Pilot, The Lie of the Land, Empress of Mars)
When in thought, he was also known to tap his teeth with his finger, (TV: Deep Breath, Kill the Moon, Last Christmas, The Woman Who Lived, Hell Bent, Oxygen) cradle his face in his hand, (TV: Into the Dalek, Mummy on the Orient Express, Under the Lake, For Tonight We Might Die, Oxygen) or twiddle his thumb on his hand. (TV: Deep Breath, Time Heist, Kill the Moon, Under the Lake, The Girl Who Died, The Woman Who Lived, The Zygon Inversion, Face the Raven, Heaven Sent, The Husbands of River Song, For Tonight We Might Die, Smile, Thin Ice) He would also gesture by turning his hand with his fingers together and thumb stuck out, (TV: Deep Breath, Into the Dalek, The Girl Who Died, Empress of Mars)
Much like previous incarnations, the Twelfth Doctor would often flick back his coat and rest his hands in his pockets. (TV: Deep Breath, Into the Dalek, Last Christmas, Under the Lake, Before the Flood, The Girl Who Died, The Woman Who Lived, Sleep No More, Heaven Sent, The Return of Doctor Mysterio, The Pilot, Smile, Knock Knock, The Eaters of Light, World Enough and Time)
He was also known to cross his arms together, (TV: Into the Dalek, Listen, The Caretaker, Dark Water, Last Christmas, The Girl Who Died,The Husbands of River Song, The Return of Doctor Mysterio, Empress of Mars) rest one hand or both on his hips, (TV: The Caretaker, Mummy on the Orient Express, Flatline,Death in Heaven, Heaven Sent, Thin Ice, Empress of Mars) and stand with his hands crossed behind his back. (TV: Time Heist, Mummy on the Orient Express, Under the Lake, The Zygon Invasion, The Zygon Inversion, For Tonight We Might Die, Smile, Thin Ice, Oxygen, The Pyramid at the End of the World, The Eaters of Light, Twice Upon a Time)
Upon seeing a vase of picked flowers, the Doctor would grab a few and smell them, holding them right up to his nose. (TV: Deep Breath, Death in Heaven, Heaven Sent) When brooding, would lean his face into his right hand as he looked downwards while pulling at his face. (TV: Into the Dalek, In the Forest of the Night, Death in Heaven, The Zygon Inversion, Before the Flood, Oxygen)
Much like his fourth and ninth incarnations, the Twelfth Doctor would grin when he was pleased or amused, flashing his upper teeth widely as he smiled in his giddiness. (TV: Listen, Time Heist, Kill the Moon, Under the Lake, Before the Flood, The Girl Who Died, Heaven Sent, The Husbands of River Song, For Tonight We Might Die, The Return of Doctor Mysterio, The Pilot, Smile, Thin Ice, The Lie of the Land, Empress of Mars, Twice Upon a Time)
Something of a foodie, the Twelfth Doctor would stop to help himself to food and drinks during his adventures, (TV: Deep Breath, Listen, Heaven Sent, Hell Bent, Thin Ice, Twice Upon a Time) sometimes carrying food on his person to eat at a moment's notice (TV: Robot of Sherwood, The Return of Doctor Mysterio, World Enough and Time, The Doctor Falls) or indulging in a takeaway meal. (TV: Time Heist, Knock Knock) Unlike his previous incarnation, he had a tolerance for alcoholic beverages, (TV: Deep Breath) and took his tea with extra sugar, (TV: Death in Heaven) due to his high blood pressure, (TV: Smile) once having seven sugars in his tea. (PROSE: The Shining Man)
He would absentmindedly scratch at his right cheek,[source needed] and snap his fingers.[source needed] He tended to say, "basically", when giving a quick summation.[source needed]
When not out adventuring, the Doctor could be found jotting down equations and theories on various chalkboards in the TARDIS console room, (TV: Robot of Sherwood, Listen) or on hard surfaces that could bear markings. (TV: Deep Breath, Mummy on the Orient Express) He also employed chalkboards as a form of non-verbal communication within a mind, (TV: Last Christmas, Heaven Sent) and in his lectures at St Luke's University. (TV: Oxygen) He also utilised a yo-yo on occasion. (TV: Kill the Moon, The Girl Who Died, Oxygen)
The Doctor kept a spare sonic screwdriver in case something happened to his first. (PROSE: Big Bang Generation) Even after he discarded his old screwdriver for a pair of sonic sunglasses, (TV: The Magician's Apprentice, The Witch's Familiar) he still carried a model of his screwdriver to use on the odd occasion, (COMIC: The Ministry of Time, The Dragon Lord) after Clara returned one of his old spares to him. (COMIC: Clara Oswald and the School of Death) After receiving a new sonic screwdriver, (TV: Hell Bent) he began to use it in conjunction with the sonic sunglasses. (TV: The Husbands of River Song, The Pyramid at the End of the World, Twice Upon a Time)
In his later life, the Doctor spent time using Wi-Fi to pass the time, but didn't want anyone seeing his browser history, (TV: The Zygon Inversion, Smile, Twice Upon a Time) as it contained a series of cat photos that he and River Song had used to communicate, which he found somewhat embarrassing. (PROSE: Twice Upon a Time)
=== Skills ===
Highly observant, the Twelfth Doctor was able to notice certain individuals in a crowd, (TV: Deep Breath, The Magician's Apprentice, The Woman Who Lived, The Pilot) realise suspicious activity ahead of others, (TV: Deep Breath, Listen, Dark Water, Thin Ice) and pick up on details that helped him unearth others' deceptions and plans. (TV: Hell Bent, The Return of Doctor Mysterio, Smile, Thin Ice) Being a Time Lord, the Doctor could also detect when a light shield aura was near him, (TV: The Caretaker) and was also able to fiddle with equipment and pilot the TARDIS while completely blind. (TV: Oxygen) However, when his attention was focused elsewhere, or he relied too much on his own brilliance or his technology, certain things around him would go amiss. (TV: Dark Water, Sleep No More, Smile, Knock Knock, Twice Upon a Time)
He was also able to make accurate deductions from keenly observing his surroundings, (TV: Deep Breath, Into the Dalek, Listen, Under the Lake, Sleep No More) and could also correctly deduce others' histories and how they felt in their environments from sheer observation. (TV: Time Heist, Mummy on the Orient Express) He noticed that Orestes Milton was a time traveller due to his choice of words, (PROSE: Silhouette) and solved the riddle of the Foretold within sixty-six seconds. (TV: Mummy on the Orient Express)
As "sneaky" as ever, (COMIC: The Stockbridge Showdown) the Doctor was able to spin an apparent fatal outcome into an advantage, (TV: Into the Dalek, Time Heist, Mummy on the Orient Express, Before the Flood, Heaven Sent) He was also able to organise a bank heist to save the Teller and its mate, even erasing his planning of the heist to guarantee success. (TV: Time Heist)
The Twelfth Doctor was a capable fighter, (TV: Deep Breath, The Doctor Falls) being skilled in Venusian aikido, (TV: Robot of Sherwood, World Enough and Time) and able to stun people with a single punch to their face, (TV: Hell Bent, Thin Ice) with the Half-Face Man and Kali both to remarking that the Doctor was "stronger than [he] look[ed]." (TV: Deep Breath; COMIC: The Swords of Kali)
Strong and durable, the Doctor was able to briefly support his own weight singlehandedly, (TV: Deep Breath, Listen) withstand several blows from Abesse, (PROSE: The Blood Cell) upstage Michael Smith by easily holding two baskets of rocks, (PROSE: Silhouette) smash up the TARDIS console with his bare hands in a grief-stricken rage, (TV: Death in Heaven) and slam a door shut in a struggle with the Veil. He was also capable of repeatedly striking a wall of Azbantium with his fists after breaking every bone in his hand, and was still able to use his hands to pull a lever afterwards. (TV: Heaven Sent) However, his durability was not absolute, with the Doctor being easily knocked to the ground when taken by surprise from behind, (TV: The Eaters of Light, The Doctor Falls) and unable to escape the grip of a CyberMondan without assistance. (TV: The Doctor Falls)
He also possessed lightning-fast reflexes, (PROSE: The Crawling Terror) notably being able to snatch the sonic screwdriver back from Spider's hand seconds before he was devoured by a sea creature, (TV: Thin Ice) and discreetly change the codes on the Master's computer in a matter of seconds without either the Master or Missy noticing. (TV: The Doctor Falls) After being thrown out of Boat One in an explosion, the Doctor was able to skydive towards his descending TARDIS, even fighting against the wind currents to place the TARDIS key in the lock. (TV: Death in Heaven)
Like several of his predecessors, the Twelfth Doctor was a highly proficient swordsman, able to best Robin Hood in a duel using a spoon, (TV: Robot of Sherwood) take on Kali's three swords with a single blade, (COMIC: The Swords of Kali) and reportedly bested Bors' broadsword with a daffodil. (TV: The Magician's Apprentice) He was also skilled with a Gunstick, shooting several Handmines from a distance while also avoiding hitting Davros. (TV: The Witch's Familiar)
Like his previous incarnations, the Twelfth Doctor also displayed telepathic abilities, being able to link his mind with Rusty to show him the beauty of the universe, (TV: Into the Dalek) put Clara through a telepathic scenario with the aid of a sleep patch, (TV: Dark Water) send a sedated Clara messages on blackboards by holding her hand, (TV: Last Christmas) establish a psychic link with a door to unlock it, (TV: Heaven Sent) and leave a message in Bill Potts's subconscious from a small distance. (TV: World Enough and Time) With a quick touch to the head, the Doctor could render someone unconscious, and also leave their memories "scrambled" (TV: Listen) to induce a mind wipe. (TV: The Caretaker, The Pilot)
Not only could he perform eye-fixation hypnotism with verbal commands, but also claimed that he could perform hypnosis that affected all the senses due to his Time Lord abilities. (COMIC: Trust)
The Twelfth Doctor was a skilled inventor, able to quickly build and assemble what he needed to achieve his goals. (TV: Robot of Sherwood, The Caretaker, Flatline) He was also able to rebuild the TARDIS' radio into a clockwork squirrel. (TV: Under the Lake)
Despite denying being a doctor of medicine, (PROSE: Silhouette) the Doctor possessed at least a limited medical knowledge, being able to resuscitate Lafcardio with artificial resuscitation after Lafcardio's lungs were filled up with soot, with the Governor noting that the Doctor worked on Lafcardio like an expert. (PROSE: The Blood Cell) He was also able to perform accurate post-mortems, (PROSE: Silhouette, The Crawling Terror) and attach a Lothan prosthetic leg to Ram Singh. (TV: For Tonight We Might Die)
The Doctor also had a good sense of smell, which he used to assess his surroundings to deduce the time period he was in, (COMIC: The Swords of Kali) which he could also do by putting his finger in the wind. (TV: Before the Flood, Sleep No More) He could detect a plasmic discharge field on scent alone. (COMIC: Doorway to Hell)
The Twelfth Doctor could play the electric guitar, (TV: The Magician's Apprentice, Before the Flood, The Woman Who Lived, The Zygon Invasion, Hell Bent) even being able to play while blind. (TV: The Pyramid at the End of the World) He was proficient enough with his guitar to join the Space Pirates on stage, (COMIC: The Twist) and keep up with Hattie Munroe when playing alongside her in the TARDIS. (COMIC: Playing House)
Despite initially forgetting how to pilot his TARDIS due to post-regenerative trauma, (TV: The Time of the Doctor) the Doctor soon mastered his way around the TARDIS console, though admitted to Bill Potts that he mostly negotiated with the TARDIS when it came to "steer[ing]". (TV: Smile) Not only could he save people by piloting the TARDIS around them (TV: Into the Dalek, The Girl Who Died) and deposit them from the TARDIS during dematerialisation, (TV: Robot of Sherwood) he was successfully able to return Clara home in time for her dates, (TV: Into the Dalek, Listen, Time Heist, The Caretaker) though he had noticeable difficulty slowly fly the TARDIS above London. (TV: Face the Raven)
He could also ride a horse, (TV: Deep Breath, The Woman Who Lived) and drive a car, (TV: The Zygon Inversion) being able to identify a vehicle by type and maker, and also summarise its capabilities. (COMIC: Doorway to Hell)
The Twelfth Doctor retained his predecessor's ability to converse in multiple languages, such as dinosaur, (TV: Deep Breath) donkey, (PROSE: All the Empty Towers) and baby. (TV: The Girl Who Died) He also claimed that he knew semaphore, which had left British Sign Language "erased" from his mind, though he could still sign, just without the knowledge of what he had signed. (TV: Under the Lake)
Believing himself to be a good magician, (TV: The Doctor's Meditation) the Doctor could disappear when people were looking away, (TV: Listen, The Pilot) swipe things without detection, (TV: Listen, Thin Ice) hide objects in others' pockets, (PROSE: Silhouette) and carry beverages in his pockets that seemed to appear out of thin air. (TV: Robot of Sherwood, The Witch's Familiar, The Return of Doctor Mysterio) He practised traditional coin magic (TV: The Doctor's Meditation) and could perform hat tricks. (TV: Thin Ice) He was also able to swipe the General's sidearm before the General could regain his senses from being punched in the face. (TV: Hell Bent)
A credited escapologist, (TV: The Girl Who Died) the Doctor boasted at teaching Harry Houdini "everything he [knew]", (COMIC: The Swords of Kali) and was repeatedly able to escape from his cell at the Prison. (PROSE: The Blood Cell) He was also a talented gambler, being able to win $800,000 in less than an hour using "simple mathematics", (COMIC: Gangland) and dancer, with Clara noting that he could apply for Strictly Come Dancing. (COMIC: Trust) His performing abilities extended into acting, notably in how he fooled the Monks into believing that he wanted to assist them as a figurehead for their propaganda, even fooling Bill. (TV: The Lie of the Land)
Despite believing himself not to be suited for the task, (PROSE: Silhouette) the Doctor had a talent for holding a crowds' attention, (TV: The Pilot, Oxygen) having a strong sense of showmanship, (TV: The Magician's Apprentice, The Husbands of River Song) and quick comedic timing. (TV: The Woman Who Lived)
Similar to his ninth incarnation, the Twelfth Doctor could slow down his perception of time by locking himself in a secure location in his mind, embodied as his TARDIS control room with his companion present, where he could take the time to re-evaluate the predicament he was in to his companion and find a way out of it. (TV: Heaven Sent)
Similar to his tenth incarnation, the Twelfth Doctor had a measure of control over his regeneration energy, being able to summon a small amount for Davros, (TV: The Witch's Familiar) and fake a regeneration to fool Bill. (TV: The Lie of the Land) After being electrocuted by a CyberMondan, the Doctor managed to resist regenerating for two weeks, though was unable to walk properly without assistance for periods of time. Even as his regenerative process instinctively triggered itself after he was further damaged by another Mondasian Cyberman's energy blaster and the destruction of Floor 0507, the Doctor forced it back further despite the strain it placed on him, almost regenerating completely. (TV: The Doctor Falls) He managed to hold it back for several more hours until he decided to regenerate. (TV:
== Appearance ==
Being of a light build, (COMIC: Chime Time) the Twelfth Doctor was a tall, thin-faced man with a tousled mop of silver-grey hair, (PROSE: The Crawling Terror) and intense blue eyes framed by unruly, expressive eyebrows, (TV: The Day of the Doctor) which he called "attack eyebrows" that could "take bottle tops off" and were "ready to secede and set up their own independent state of eyebrows". (TV: Deep Breath) He also had a hooked nose, with big ears. (TV: The Time of the Doctor) Recognising that he had "seen [his] face somewhere before", (TV: Deep Breath) the Doctor eventually realised that he had the face of Lobus Caecilius, a man who's famly his tenth incarnation had saved from the destruction of Pompeii on Donna Noble's insistence, and concluded that he had subconsciously chose Caecilius' face to remind himself that he always save[d] people. (TV: The Girl Who Died) At some point, the Doctor appeared to have had his left earlobe pierced, as he had visible scarring on his ear by the time he extracted Clara from her timeline. (TV: Hell Bent)
The Twelfth Doctor's hair was a silvery shade of grey, kept short and combed down, (TV: The Time of the Doctor, Deep Breath) though occasionally styled into a coif. (TV: The Caretaker) However, he later let his hair grow out, and become curlier, (TV: Last Christmas, The Doctor's Meditation, Hell Bent, For Tonight We Might Die) but had it cut down by the time he met River on Mendorax Dellora. (TV: The Husbands of River Song) After he left Darillium, (TV: Extremis) his hair had grown back to its old length. (TV: The Return of Doctor Mysterio, The Pilot) When his body began to regenerate, his regeneration energy caused his hair length to grow out immensely. (TV: The Doctor Falls, Twice Upon a Time)
Upon first seeing his reflection, the Twelfth Doctor described his face as being "absolutely furious", though he later admitted that it was "all right up until the eyebrows". (TV: Deep Breath) He also described himself as a "distinguished gentleman with [a] twinkle in his eye", (COMIC: The Swords of Kali) and considered his intimidating eyebrows as both a major contributor to his gravitas, (TV: Time Heist) and the reason many viewed him as a hostile. (COMIC: The Swords of Kali)
With his "gaunt face". (NOTVALID: Who Killed Kennedy epilogue) the Twelfth Doctor was called a "boney rascal" and a "desiccated man-crone" by Robin Hood, who also described him as being "pale as milk", (TV: Robot of Sherwood) with Shona McCullough calling him a "skeleton man". (TV: Last Christmas)
While she once noted that the Doctor's face "always looked serious", (PROSE: Silhouette) Clara Oswald described him as looking like a "grey-haired stick insect", (TV: Listen) and even used such an image for him on her caller ID. (TV: Mummy on the Orient Express)
The Governor believed the Doctor had "a face for fury", and that it was "made up of storms" and "[boiled] away like a dying star". (PROSE: The Blood Cell) Ross McNamara compared the Doctor's "craggy" face to "the surface of the Moon." (PROSE: Haunted)
Shortly after their regeneration, the Thirteenth Doctor described her predecessor as "a white-haired Scotsman". (TV: The Woman Who Fell to Earth)
=== Clothing ===
==== Main attires ====
Aiming for "minimalism", (TV: Time Heist) the Twelfth Doctor initially donned a navy blue Crombie coat with crimson lining and matching navy cardigan with a white collared shirt, midnight blue trousers, and black brogue boots. On his left hand ring finger, he had a pair of gold rings, a normal gold band and a second ring with a greenish amber setting that rested atop the first band, (TV: Deep Breath) which the Doctor considered to be a wedding ring that symbolised his marriage to River Song. (PROSE: Twice Upon a Time) Occasionally, the Doctor would replace his cardigan with a 5-button Palmer Waistcoat, with colours ranging in dark blue and plain black, (TV: Mummy on the Orient Express, Flatline) and change his dark blue trousers to black. (TV: Under the Lake) His socks were either decorated with cartoon animals (PROSE: The Blood Cell) or plain black, (TV: Heaven Sent) and his underpants reportedly had question marks. (TV: The Zygon Invasion) While Clara noted his clothes made him look Victorian, (PROSE: Silhouette) the Doctor believed he looked like a magician. (TV: Time Heist)
Though his Crombie coat remained a constant staple of his appearance, he would wear them in a variety of colours and materials, with colours coming in navy blue, (TV: Deep Breath) black, (COMIC: The Eye of Torment) lapis blue, (COMIC: The Hyperion Empire) maroon, (COMIC: The Highgate Horror) black velvet, (TV: The Return of Doctor Mysterio) and worn-out grey. (TV: Extremis) To go with his maroon Crombie coat, the Doctor also owned a scarlet waistcoat with matching trousers and shoes. (COMIC: The Highgate Horror)
The Doctor would also wear variations of his attire, switching from vested garments with a snowy shirt for a simple dress shirt on its own, coloured in burgundy, (TV: Robot of Sherwood) dark navy blue, (TV: Time Heist) or black with a white polka dot pattern. (TV: Kill the Moon) Other times, he would dispense with the shirts as well and don a black crew neck jumper (TV: Listen) with small star-shaped sparkles on the front that helped him see in the dark, (PROSE: Royal Blood) and later began wearing a zip up hoodie under his coat, with colours ranging in plain black, (TV: Last Christmas) ocean green, (TV: Under the Lake) and marine blue. (TV: The Woman Who Lived) Under his jumper, he wore a white, (TV: Listen) red, (TV: The Woman Who Lived) or grey T-shirt. (COMIC: Time and PR in Space) On one occasion, he wore a burgundy ladder jumper. (TV: The Return of Doctor Mysterio)
In his "rock star" image,[source needed] the Doctor continued to wear his hoodie under his Crombie coat, but replaced his jumper with an ivory T-shirt and a pair of baggy plaid trousers similar in style to those of his second incarnation, either in a gunmetal grey design, (TV: The Doctor's Meditation) a Prussian blue design with an alabaster plaid pattern, (TV: The Girl Who Died) a navy blue tartan pattern with crimson stripes, (TV: The Woman Who Lived) or a bottle green colour. (COMIC: The Ministry of Time) His vest wear included a dusty pink Henley top underneath a Misty Mountain T-shirt, (TV: The Doctor's Meditation) a Negative Flower T-shirt, (TV: The Girl Who Died) a plain white T-shirt, (COMIC: The Ministry of Time) and a black T-shirt with a shark on it. (TV: Face the Raven)
During his time at St Luke's University, the Doctor began wearing a black velvet frock coat with a cornflower blue lining, while the rest of the his outfit came with many variations. Accompanying the frock coat would be a puce, dark green or black hoodie, a ocean green ladder, black distressed or blue paint splatter jumper, a white shirt or longline burgundy, blue or black t-shirt, (TV: The Pilot, The Eaters of Light) and a blue or black waistcoat with notched lapels and brown buttons. (TV: The Pilot) On one occasion, he dispensed with the waistcoat and wore a simple scarlet dress shirt. (TV: The Pyramid at the End of the World) He also began keeping the cuffs of his sleeves unrolled. (TV: The Lie of the Land)
==== Other costumes ====
Following his regeneration, the Doctor was placed into a Victorian nightshirt and slippers by the Paternoster Gang to help him rest. While investigating reports of spontaneous human combustion, the Doctor exchanged his old watch for a coat from a a vagabond, which he wore over his nightshirt. After infiltrating Mancini's Family Restaurant, the Doctor stole a Clockwork Droid's suit in order to masquerade as one to get close to the Half-Face Man. (TV: Deep Breath)
For formal wear, the Twelfth Doctor would don a black double-breasted suit jacket, black trousers and low-rising waistcoat, his black brogue boots, a white dress shirt and a black cravat tie. (TV: Mummy on the Orient Express, The Husbands of River Song) When he took Bill Potts to the frost fair of 1814, the Doctor wore his velvet frockcoat, but favoured more Regency era clothing in the form of navy trousers, a royal blue brocade waistcoat, a midnight blue cravat, a white shirt, black gloves and a navy top hat that he later swapped for a black one. (TV: Thin Ice)
When going into "deep cover" as Coal Hill School's temporary caretaker, the Doctor donned an ocher brown warehouse coat over his black crew neck jumper, (TV: The Caretaker) and was photographed wearing the same coat while brandishing a mop at some point before 5 March 2005. (PROSE: Rose)
After returning to Gallifrey, the Doctor discarded his waistcoat and velvet Crombie coat in favour of a black overcoat, which he found in his old barn. He later resumed wearing his Crombie coat when he returned to his TARDIS. (TV: Hell Bent)
While imprisoned on the Prison, the Doctor was fitted with a standard orange uniform. (PROSE: The Blood Cell) While visiting 1963 Las Vegas, the Doctor donned a blue Fedora at Clara's urging. (COMIC: Gangland) When Zip Betterblast gave him a "re-design" for his TV appearance, the Doctor received blue jeans, a cap with a "DW" logo, and yellow sleeveless V-neck top with a palm tree island image on it. (COMIC: Time and PR in Space)
== Behind the scenes ==
=== Information from invalid sources ===
* Promotional material for Doctor Who Experience mentions that the green amber stone on the Twelfth Doctor's ring was "allegedly" collected on the planet Raxacoricofallapatorius.
* In DWM 477, showrunner Steven Moffat jokingly answered one fan's question on what colour the Doctor's kidneys now were, after he had complained about their colour, as "Froon", a colour which only the Doctor could see.
* Writing in DWM 495, Moffat confirmed that the photo-realistic painting of Clara seen during Heaven Sent was painted by the Doctor himself. Capaldi himself is a trained artist, although his style is more on the caricature side.
* According to the Doctor Who The Official Annual 2018, which is not accepted as a valid source for in-universe articles on this wiki, the Doctor and River had a home on Darillium during their final night; their address was "Flat 40, Singing Towers View, Darillium".
* In the twentieth anniversary edition of Who Killed Kennedy by David Bishop, an epilogue was added in which James Stevens contacts the Twelfth Doctor and convinces him to alter the coordinates of the Master's Time Ring so that he can travel to 11 August 1971 and prevent Francis Cleary from killing his former companion Dodo Chaplet.
=== Casting ===
* Capaldi was the second actor, after Sixth Doctor actor Colin Baker, to have played an on-screen character in Doctor Who before being cast as the Doctor, having played Lobus Caecilius in The Fires of Pompeii and John Frobisher in Torchwood: Children of Earth. However, if one counts David Tennant's appearances in various Big Finish audios and Scream of the Shalka prior to his casting as the Tenth Doctor, Capaldi is actually the third actor to have appeared in Who-media prior to taking on the role.
=== Peter Capaldi's age ===
* Cast at 55-years-old, Peter Capaldi was the oldest actor to regularly portray the Doctor since First Doctor actor William Hartnell, who was a few months Capaldi's junior. War Doctor actor John Hurt, however, remains the oldest actor to portray a new incarnation of the Doctor upon debuting, at 73-years-old.
=== Costume influences ===
* Peter Capaldi wanted to wear his wedding ring as part of the Doctor's attire, and requested a prop to disguise it. He was given an amber ring with a gemstone that fitted over the top of his original band. It was revealed in the Twice Upon a Time novelisation that the ring was the Doctor's wedding ring from his marriage to River Song.
* His costume was revealed in DWM 470 and online earlier than planned to preempt a tabloid scoop.[source needed]
=== Other matters ===
* Like the War Doctor and the Ninth Doctor before him, the Twelfth Doctor debuted in a television story before his regeneration from his predecessor was screened.
* Peter Capaldi pierced his left ear earlier in life and the scar from his piecing was visible during close-ups of his face in Hell Bent. This is the second time the Doctor has sported noticeable body modification from the previous life of his actor; Jon Pertwee's arm tattoo from his Royal Navy days was visible in a scene in Spearhead from Space.
* In several series 9 episodes, most notably Heaven Sent, the Doctor displays a slight limp, because Capaldi had injured his knee early in filming of the season, and underwent surgery to repair the knee late in 2015. As Capaldi later explained, "We realised what it is: you run down these corridors and you reach the end and then you spin to make sure you get a nice close-up. You spin on that leg and you put tension on that knee."
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