Second Doctor

Though outwardly warm, bumbling, and somewhat clownish, the Second Doctor also had a darker, more cunning aspect to his personality — one which he usually kept hidden in order to carry out his plans. Regenerating when his first incarnation gave in to old age following his fight with the Cybermen, this new incarnation was the product of the Doctor's first regeneration, thus the second incarnation of the Time Lord.

He travelled with a number of companions. He had adventures with his previous incarnation's last companions, Ben Jackson and Polly Wright, before adding Highland Scot Jamie McCrimmon to the mix. After a while, Ben and Polly left, to be replaced by Victoria Waterfield, a woman orphaned by the Daleks. In time, she too left, and the Doctor made a new friend in the mentally gifted Zoe Heriot. At some point he also travelled with his grandchildren, John and Gillian.

His adventures came to an end when he at last called on his people for help with the evil machinations of the War Lord. Though the Time Lords did indeed render assistance, they also condemned him to exile on Earth and a new body for breaking their non-interference policy many times over. The Celestial Intervention Agency was able to stay the execution of this sentence for a while in exchange for the Doctor providing his services to them. During these later years of his life, the Second Doctor variously carried out covert operations for the CIA and lived in luxury and fame in the heart of 1960s London. Eventually, though, Time Lord justice reasserted itself, and the Doctor was indeed forced to regenerate into his third body.

New life
After enjoying a long life, the First Doctor reached the limits of old age in his original body. He knew the time was fast approaching for him to begin the process that would renew his physical form, but he stubbornly avoided the imminent change. Eventually, it became impossible for him to wait any longer and the process took place on its own. When his body wore "a bit thin" after defeating the Cybermen in Antarctica in December 1986, he entered his TARDIS without stopping to take his companions back, sensing he didn't have much time left. Upon entering, he found the controls moving on their own. His companions caught up to him and were locked outside the TARDIS, banging on the doors in protest. He managed to open the doors with the last of his strength and the two companions rushed to his aid as he finally collapsed. While they watched from a safe distance, the Doctor regenerated for the first time in his life on the floor of the TARDIS, his appearance changing into that of a much younger man - to the shock of his companions. (TV: The Tenth Planet)

Referring to it as a "renewal," the Doctor found himself suspected as an impostor by his companion, Ben Jackson, as the Doctor had not told his companions that Time Lords could regenerate and change how they look. His other companion, Polly Wright, seemed more ready to believe that he was in fact still the Doctor. They were thrown into a battle with the Doctor's old enemy, the Daleks, at the Earth colony on the planet Vulcan. The fact that the Daleks recognised the Doctor as their enemy helped to convince Ben of his credentials. (TV: The Power of the Daleks)

Travels with Ben and Polly


Soon after regenerating, the Doctor met Lilith on Kirith, when the Timewyrm had been recuperating in his mind since his regeneration. However, the Timewyrm passed from the Doctor to Lilith, leading to trouble for the Doctor in the future. (PROSE: Timewyrm: Apocalypse)

The new Doctor, Ben and Polly subsequently travelled for three weeks, when they encountered Cat-People and Euterpians in 1994 (PROSE: Invasion of the Cat-People) and Selachians in the Hotel Galaxian. (PROSE: The Murder Game)

Travels with Ben, Polly and Jamie


Soon, the trio met Jamie McCrimmon in Scotland on 16 April 1746. They invited him to come along on their travels (TV: The Highlanders) They travelled to Atlantis (TV: The Underwater Menace) and together on the Moon fought a new, more machine-like form of Cyberman. (TV: The Moonbase) They encountered the Macra on an Earth colony. (TV: The Macra Terror)

They then went to Vichy France in February 1944 (AUDIO: Resistance) and met the Vist (AUDIO: The Forbidden Time). They would then meet the Selachians again, while borrowing money from the bank. (AUDIO: The Selachian Gambit) Then they went to a space Casino, where the Doctor met the Sidewinder Syndicate. (AUDIO: House of Cards) During this time they also ended up in England, 1648 where the Doctor encountered Oliver Cromwell (PROSE: The Roundheads)

Next, the group met and defeated the Chameleons at Gatwick Airport on 20 July 1966. After realising that they had arrived home on the same day they had originally left, Ben and Polly decided to end their travels with the Doctor and remain on Earth in 1966. (TV: The Faceless Ones)

In his investigation of reports of a series of agent provocateurs known as "the Doctor" who had been involved in unusual incidents, the journalist James Stevens interviewed Samantha Briggs about the Gatwick Incident. She described the Doctor as "a short man with a mournful face and dishevelled clothing." She also noted that he had a "blurred" English accent which defied description and seemed to be extremely knowledgeable on a wide variety of subjects. Stevens dubbed him "the Gatwick Doctor" due to his involvement in the investigation of holiday fraud. He found it bizarre that it occurred on the same day as the C-Day fiasco, namely 20 July 1966, when Sir Charles Summer claimed to have been in the company of an elderly white-haired man who also called himself "The Doctor" in Central London. Stevens also found evidence that the Gatwick Doctor was later heavily involved in the London Event, an infamous nerve gas scare on the London Underground, during which the population of Central London was evacuated. (PROSE: Who Killed Kennedy)

Adventures with Victoria and Jamie
After the TARDIS was stolen at the behest of the Daleks, the Doctor and Jamie found a Time corridor and were transported back to 2 June 1866 where they found two 19th century human scientists, Edward Waterfield and Theodore Maxtible, trying to isolate the Human Factor. Jamie and the Doctor befriended Waterfield's daughter, Victoria. After Edward Waterfield died, and the introduction of the Human Factor into some Daleks having instigated a civil war on Skaro, the Doctor and Jamie left with Victoria. At the time the Doctor believed that the Daleks had truly destroyed each other, forever. (TV: The Evil of the Daleks)

With Jamie and Victoria alongside him, the Doctor saw an archaeological team on Telos open a Cyber-tomb. Eric Klieg awakened the Cybermen and the Cyber-Controller from their five-hundred year slumber, but the Doctor and Jamie sealed them away again. The Doctor electrified the entrance, the hatch leading to the tombs and the Symbolic Logic controls to prevent anyone else from entering. (TV: The Tomb of the Cybermen) On Earth, they had their first known encounters with the Robot Yeti, the Great Intelligence, (TV: The Abominable Snowmen) and the Ice Warriors. (TV: The Ice Warriors)

The Doctor next met a double of himself in Ramón Salamander. (TV: The Enemy of the World) During a second battle with the Great Intelligence and the Yeti, the Doctor met Alistair Gordon Lethbridge-Stewart for the first time. (TV: The Web of Fear)

Meeting an old friend and losing a new one
The Doctor later befriended Stuart Mallory, a distinguished naturalist, with whom he and his two companions later took dinner. (PROSE: The Last Emperor)

The Doctor next visited the American town of East Ridge, where he helped a farmer called Thomas Watson to protect his family's farm from ruthless New York businessman, John Glassman. However, the Doctor's actions turned the whole town against the Watsons. The Doctor, Jamie and Victoria managed to expose John's dishonesty to the town's sheriff, which saved Thomas' farm and place within the town. (PROSE: The Farmer's Story)

Returning to 1960s London weeks after the Yeti invasion, the Doctor discovered a robot duplicate of Edward Waterfield had been created by the Daleks to exact revenge on him for destroying them in the 19th century. Even though the Doctor defeated the robot, the trauma of fighting her own father fuelled Victoria's determination to stop travelling with him as soon as she found peace for herself. (PROSE: Father Figure)

The Doctor next investigated a number of disappearances at the New York Supplementary Education Institution and sent Jamie and Victoria undercover. He was reunited with a younger version of Edward Grainger, whose god-daughter and husband had also gone missing. The Doctor discovered a slave race called the Virtors had been transporting students back to their homeworld of Virtus. He prevented them from capturing Victoria, Jamie and Edward. But accidentally fell into their portal to Virtus himself.

Trapped on Virtus for a long period of time, the Doctor led a slave rebellion and, eventually, led the ageing humans back home, merely seconds after he had originally left from Earth's prospective, and he reunited Edward with his, now much older, god-daughter. (PROSE: The Lost)

After the TARDIS landed once more on Vortis, (PROSE: Twilight of the Gods) the TARDIS crew travelled near the Darkheart. They encountered the war-like Veltrochni and Koschei, an old friend of the Doctor's from Gallifrey, travelling with Ailla. Koschei was possibly sent by the Time Lords to retrieve the Doctor. However, the temptation posed by the Darkheart device proved too much for Koschei, and the revelation that his companion Ailla was a spy killed the last traces of good in him, and he became the Master. The Doctor trapped him in a black hole, instigating a great feud between him and his old friend that would last for centuries. After being tempted by the Master to turn to the dark side, Victoria decided that at the next opportunity, she would settle down and leave the TARDIS. (PROSE: The Dark Path)

Craving peace and quiet, Victoria left the TARDIS crew to live with Frank and Maggie Harris after an adventure on a Euro Sea Gas station with a weed creature. (TV: Fury from the Deep)

Encounters with Jamie and Zoe
The Doctor and Jamie discovered a Cyberman plot involving a space station and picked up one of the space station's crew, Zoe Heriot. Together, they fought the Cybermen and Zoe stowed away aboard the TARDIS. To make sure that she really wanted to come with them, the Doctor showed her a mental projection of his last adventure with the Daleks to show her just what she was letting herself in for. (TV: The Wheel in Space) Right after this they actually encountered the Daleks. (AUDIO: Fear of the Daleks)

On the planet Dulkis, the Doctor, Zoe, and Jamie first fought the Quarks. The Doctor was nearly killed when he carried a live bomb into the Dominator ship. (TV: The Dominators)

By this time, the Doctor considered Jamie to be the most reliable friend that he had ever had. (AUDIO: The Jigsaw War)

After an adventure in the Land of Fiction, (TV: The Mind Robber) the travellers landed on Earth, where they learned that Lethbridge-Stewart, now promoted to Brigadier, headed a new alien defence organisation called UNIT. Alongside UNIT, they defeated Tobias Vaughn and the Cybermen, with the assistance of the Brigadier and Corporal Benton. (TV: The Invasion)

In Scandinavia during the Dark Ages, Jamie was wounded by a vicious barbarian called Vignor. The Doctor and his friends were saved by Bior and joined his tribe. The Doctor soon discovered Bior was using magic to transform himself and his tribe into bears to protect their village. When Vignor attacked the village and killed Bior's younger son, Bior went on a vengeful attack, slaughtering men, women and children. The Doctor was forced to trap Bior in his form as a bear forever after he killed Vignor. (PROSE: That Which Went Away)

Unimpressed by Zoe's haughty demeanour, the Doctor took her to Los Angeles in 1999 at Christmas to teach her a lesson in humility. They helped to provide food, drink and shelter for the homeless and the poor. (PROSE: Goodwill Toward Men)

Defending against Omega
The Doctor, Zoe and Jamie briefly returned to the Land of Fiction. During their stopover, the Doctor again encountered Lemuel Gulliver. Upon closer examination, the Doctor discovered that it wasn't Gulliver at all, but rather a Time Lord named Goth, whom the Doctor remembered had presided over meetings of the Celestial Intervention Agency. Goth claimed a great crisis was about to befall Time Lord civilisation. He persuaded the Doctor to help his successor stop Omega from ripping reality apart. (PROSE: Future Imperfect) The Doctor was time-scooped to his TARDIS in the future, where he reunited with the Brigadier and his other UNIT friends. He also encountered a future travelling companion and traded barbs with his future self. Ultimately, the two incarnations of the Doctor were able to work together when they and their UNIT friends were transported to an antimatter universe, despite their differences, and successfully eliminated Omega — but the price was the loss of his recorder. After this, the Doctor said his farewells to his future and was returned to Jamie and Zoe. (TV: The Three Doctors)

Although his memories of meeting his future self quickly faded, the Doctor did remember that he had lost his recorder, and went to a music shop on Amber Station to get a new one. (PROSE: Briefly Noted)

Further adventures
The Doctor, Jamie and Zoe visited a space ship that was being attacked by snake-like creatures. The creatures were defeated by the Doctor playing the recorder. (COMIC: The Forgotten) They also encountered the Krotons, and freed the Gonds from them. (TV: The Krotons) Later they once more battled the Ice Warriors. (TV: The Seeds of Death)

The group landed in the Frenko Bazaar, a famous intergalactic trading post where one could buy "just about anything". The Doctor, in an attempt to take down the slave market, placed a homing device on Jamie, and followed some Voraxx into Stellar Imports & Exports to gain their attention. A member told the Doctor that Jamie, coming from the past, was worth a mint. When he said Jamie wasn't for sale, the Voraxx members followed them.

The Voraxx kidnapped Jamie, and took him aboard a slaver ship in orbit. Following Jamie's signal, the Doctor and Zoe found the trans-mat that led to the ship and found Jamie. They then awoke some Ice Warriors, who started an uprising. The slaves took over the ship, forcing the slavers to leave. As the trio teleported back to the shop, the Doctor was shocked to find his companions missing, having been captured by an entity. (COMIC: Prisoners of Time)

After regaining his companions, the Doctor encountered space pirates. (TV: The Space Pirates) When Jamie and Zoe were imprisoned in an alien prison disguised as an English country home, the Doctor allied with a gentlemen thief called Lucas Seyton, known as "the Fallen Angel". They infiltrated the prison and discovered the prisoners had killed each other. After being reunited with his friends, the Doctor closed the prison down and destroyed the android guards. (PROSE: Fallen Angel)

At some point during his travels with Jamie and Zoe, they visited Bob Dovie at 59A Barnsfield Crescent in Totton, Hampshire on 23 November 1963. (AUDIO: The Light at the End)

Trial
The Doctor encountered another Time Lord, whom the War Lords referred to as the War Chief. He had given space-time vessel technology to the War Lords, a race planning to use human soldiers as an army to conquer the galaxy. Unable to return all the many soldiers kidnapped from various periods of Earth history to their correct places in time and space, the Doctor had no choice but to seek help from the Time Lords, thereby betraying to them his location.

The Time Lords captured the Doctor and placed him on trial for violating the cardinal rule of the Time Lords - that of non-interference. Jamie and Zoe were taken away from him and had their memories of the time they spent travelling with him removed. After showing that his interfering with time actually helped prevent evils such as the Daleks and Cybermen from gaining significant power, his sentence was handed down. He was to be exiled on Earth in the 20th century with a forced regeneration. He was given a choice of new appearance, but rejected all of the choices. At wits' end, the Time Lords chose his new face for him and sent him away to begin his exile. (TV: The War Games)

Working for the CIA
Before the sentence could be carried out, the Celestial Intervention Agency interceded, turning the Second Doctor into their "hired gun". In his first mission he met the Players, an experience that left his hair temporarily grey.

Using the death of his companion Serena as blackmail, the Doctor convinced Sardon to let Jamie travel with him again. Sardon conceded, altering Jamie's memory to believe Victoria was away studying graphology. (PROSE: World Game) The Doctor's mission took him to Space Station Camera. He was supposed to persuade his old friend Dastari to stop his scientists' experiments with Time but Dastari had planned to kidnap the Time Lord emissary all along. He and the Androgum Chessene had partnered with the Sontarans to steal the secret of Time Travel from the Time Lords' genetic makeup. The Sontarans slaughtered the station and the Doctor's death was faked to hide his kidnapping and seclusion in Seville. Jamie escaped the massacre and reported everything to the sixth incarnation of the Doctor and Peri when they discovered him. The combined efforts of the four put a stop to the dangerous plans, but not before the Second Doctor was briefly turned into an Androgum. Luckily his body rejected the DNA transfusion. (TV: The Two Doctors)

The Doctor and Jamie then had further adventures, including one where they investigated Helicon Prime and the murderous Mindy Voir. (AUDIO: Helicon Prime) They next travelled to Earth in 54,010 and rescued a tribe of Stone Age humans from a bio-dome. (PROSE: All of Beyond)

After Jamie was returned to his own time, the Doctor travelled to a rundown housing estate on Earth and joined forces with a gang of teenage outcasts to stop the awakening of a golem. (PROSE: Golem) The Doctor next helped Jovain Pallis investigate a murder on human colony on Mars, only to discover that Jovain was the murderer. (PROSE: Dust)

The Second Doctor teamed up with all of his other incarnations to save Gallifrey from destruction at the end of the Last Great Time War. Due to the timelines not being synchronised, he had no memory of this event. (TV: The Day of the Doctor)

Whilst hunting a troubled women who had the ability to make others feel her pain and loneliness, the Doctor met an American teenager called Nanci Cruz, who helped him to stop the women. (PROSE: Mother's Little Helper)

The Doctor later gave a librarian a purpose in life, sparking off a chain of events that would save his future companion, Ace, from a prison sentence. (PROSE: Pass It On)

Recruited by the Brigadier and UNIT, the Doctor was sent undercover at a film production which featured the Cybermen. He managed to keep UNIT's best kept secrets a secret and drove the Cybermen away from Earth. (PROSE: Scientific Adviser)

Travels with John and Gillian
Tired of travelling alone, the Doctor reunited with his two grandchildren, John and Gillian, and saved every planet in the universe from being attacked by missiles that had been programmed by the Extortioner in his scheme to hold every goverment in the universe to ransom. (COMIC: The Extortioner)

Taking John and Gillian in the TARDIS with him, the Doctor planned to sign a peace treaty with the Trods of Trodos. However, He found that he had been lured into a trap by the Daleks. Escaping before they could kill him, the Doctor allied with Trod survivors to free Trodos from Dalek control. (COMIC: The Trodos Ambush)

Leaving Trodos, the Doctor found a Dalek ship was chasing his TARDIS through the time vortex, which eventually forced him to return to 22nd century Earth at the height of the Dalek Empire. He disguised himself as a Dalek and foiled Dalek Supreme's plot to create thousands of Daleks. When he was detected, the Doctor used his disguise to trick all Daleks into destroying each other before making a quick exit in the TARDIS with his grandchildren, only the Dalek Supreme survived the attack, and swore revenge on the Doctor. (COMIC: The Doctor Strikes Back)

Not long after their encounter with the Daleks, the Doctor and his grandkids returned to 1960s Earth and stopped the Zagbors from converting humanity into human robots. After the Zagbor damaged the TARDIS, the Doctor overpowered their hypnotic beam and made them his slaves. (COMIC: The Zombies)

Attempting to test his newly invented ray gun, The Doctor landed his TARDIS in a swamp, where he and his grandchildren were hunted down by spiders, under the command of the Master of Spiders, who hated outsiders entering his swamp. (COMIC: Master of Spiders)

Taking John and Gillian to another alien planet, the Doctor re-encountered the Daleks and destroyed the Exterminator, a powerful weapon capable of destroying Earth with a single blast, instead using the weapon to destroy a spate of Dalek saucers. (COMIC: The Exterminator)

The Doctor next took John and Gillian to the Grand Museam in 1960s New York, where they worked with the Military to destroy three dinosaurs. (COMIC: The Monsters from the Past) The Doctor and his TARDIS later became the god of a South American tribe after he, John and Gillian saved the tribe from warriors and their ruthless god, Madar. (COMIC: The TARDIS Worshippers)

The Doctor and his grandchildren became caught up in Space War Two in the 30th century, which was being fought between humanity and the robots of Veno. Although he couldn't end the war, the Doctor stopped a vengeful renegade human called Arborge Quince from creating his own army of robots to attack Earth. (COMIC: Space War Two)

He next took John and Gillian to a cricket match in Egypt in 1880, where the TARDIS was stolen by Arabs working for Mahadi. He failed to stop them attacking a British outpost when he was taken prisoner by the British on suspicion of being a spy. Escaping, he retrieved his grandchildren and left in the TARDIS. (COMIC: Egyptian Escapade)

A few days later, the Doctor investigated a crashed ship on Minot and discovered a small group of Cybermen had possession of a bomb that they planned to use to destroy Earth. Setting the bomb to destruct in 25 minutes, he accidentally became trapped on the Cybermen's ship as it hurtled through space. Luckily, he managed to contact his grandchildren on Minot and escaped in the TARDIS before the ship exploded and killed all the Cybermen aboard. (COMIC: The Coming of the Cybermen)

At some point, the Doctor had an encounter with the Terrible Zodin. (TV: The Five Doctors)

A trip with the Brig
On another occasion, while visiting Alistair Gordon Lethbridge-Stewart at a UNIT reunion party, the Doctor and the Brigadier were kidnapped by Borusa and taken to the Death Zone. They had to escape from a squad of Cybermen, encounter a Yeti and face illusions of Jamie and Zoe. In the Dark Tower he met his first, third and fifth selves and a. After Borusa was turned to stone, the Second Doctor was returned to his timezone. (TV: The Five Doctors) During a brief trip in the TARDIS with the Brigadier, the Doctor was trapped in the event horizon of a black hole. (AUDIO: The Three Companions)

Captured by the Master
The Doctor was captured by, who wanted to pull seven of the Doctors out of time for revenge. The Graak helped free him.

The test to free the Second Doctor was like one of his past adventures, in which Yeti were set free to roam around the TARDIS and a London Underground-like domain, with his Stattenheim remote control taken from the him. When the Master was captured, all Doctors were freed. (GAME: Destiny of the Doctors)

Trapped on Earth
Later the Doctor took up residence on Earth, living out of the posh Carlton Grange Hotel in London. During this period, he enjoyed considerable luxury and press attention. People from around the world brought their problems to him. (COMIC: Action in Exile - The Night Walkers)

Death
After running from Time Lord retribution for so long, the Doctor's luck finally ran out; One night, while appearing on the game show, Explain My Mystery, the Doctor was asked to consider the case of Mr. Glenlock-Hogan, a farmer with the walking scarecrows. He wasn't able to do so and arranged for an off-camera visit to the farm. When he arrived, the scarecrows duly began to walk around. Eventually, they captured and shot him revealing that they had been animated by the Time Lords in order to carry out the remaining part of his sentence. The Doctor spoke his last words, "Fear no more, Hogan...after this dreadful night has passed your scarecrows will not walk again!"

They then dragged him to his waiting TARDIS, where they forced him to regenerate. During the process, the scarecrows programmed the TARDIS for a final flight, then left. The TARDIS travelled to an English field, where it was found, along with the newly-regenerated Doctor, by UNIT. (COMIC: The Night Walkers, TV: Spearhead from Space)

Undated adventures

 * The Second Doctor, Jamie and Victoria travelled to Venus, where the Doctor learned Venusian aikido. (AUDIO: Voyage to Venus)
 * The Second Doctor also travelled to Draconia, during the reign of the Fifteenth Emperor, and cured a local plague, which earned him a nightingale as a Noble Draconian. (PROSE: The Dark Path) Holding a title on Draconia later helped the Third Doctor. (TV: Frontier in Space)
 * River Song was offered 'this cool place on Telos' by the Second Doctor, but according to her diary she "saw right through that (and I hope he chokes on that recorder.)" As with all the former incarnations of the Doctor she interacted with, she wiped his memory with mnemosine recall-wipe vapour so as to not contaminate the timeline. (GAME: The Eternity Clock)
 * At some point, the Second Doctor had an adventure with the Eighth Doctor. (TV: The Name of the Doctor)
 * Along with his other incarnations he attended Brigadier Alistair Gordon Lethbridge-Stewart's funeral. (PROSE: Shroud of Sorrow)

Personality
This incarnation was a complete change of pace from his predecessor - whimsical, somewhat buffoonish, yet still witty. The Doctor was no longer a grandfather figure, but rather more of a favourite uncle. Indeed, the slow transition of the first incarnation from a reluctant travelling companion to a more kindly compatriot was completed here, as the second incarnation very much enjoyed embroiling himself in adventures with his assistants. Despite this incarnation's almost childlike recklessness, it was always clear to his allies that a keen, deliberate intellect lurked behind every action. Although the second incarnation frequently gave the impression that he never knew what he was doing, this was simply an affectation and an act put on to fool those who would underestimate him. He also had a warmer, gentler way about him than his earlier incarnation. Zoe Heriot considered him a "lovely little man" who was "such fun to be with." (PROSE: One Small Step...) On another occasion, she described him as "old, clever and kind." (AUDIO: The Five Dimensional Man) He was very childlike in his love of play, dancing a jig in his new body, on the outskirts of Atlantis and a beach in Australia. Although he was always in trouble, he loved peace and quiet.

The Doctor considered himself a "genius". (TV: The Seeds of Death) But he far preferred to play like a fool in order for his foes to underestimate him. He was so successful in "failing" The Dominators intelligence tests that they threw him off their ship in disgust (TV: The Dominators). The madman Omega clearly preferred the company of the Third Doctor to his previous incarnation after witnessing his capers, and asked the latter if he was certain they were of the same intellect (TV: The Three Doctors) Even his companions were not immune to his refusal to be pinned down; When he pointed out his genius to Jamie, he did it with an air of parody, as a self-important fool would do. (TV: The Two Doctors)

Paradoxically, he had a deep streak of ruthlessness when needed. When dealing with a known adversary such as the Cybermen, he wired the tomb doors to fatally electrocute anyone trying to open them. (TV: The Tomb of the Cybermen) He steered an Ice Warrior fleet into the sun, (TV: The Seeds of Death) and ensured that a relatively helpless party of Daleks would all die. This action alienated Victoria, who was disturbed to see this side of him. (COMIC: Bringer of Darkness) The second incarnation was also painfully aware of the need to see the "bigger picture". He knew that it was entirely proper to sacrifice a few lives if it would save millions. (TV: The Power of the Daleks)

The Doctor also had a noticeably antagonistic relationship with his next incarnation on their initial first meeting. Their relationship was so rocky and their personalities so different that they seemed incapable of working together without the authoritative presence of their first incarnation. Gradually the Third Doctor realized he had forgotten how he used to play the fool in order to test his opponents. In the end they worked well and parted amicably, with the Second Doctor professing he was "so glad to have met me." The next time they met it was during the Game of Rassilon and the two merely bickered idly, instantly getting down to business and working as a cohesive unit to rescue the Fifth Doctor from Borusa. They traded barbs one last time before leaving. (TV: The Three Doctors, TV: The Five Doctors)

The Sixth Doctor told his companion Peri Brown that he was "always very fond of Jamie." (TV: The Two Doctors)

Skills and abilities
This incarnation of the Doctor had a knack for playing the recorder. (TV: The Power of the Daleks, The Underwater Menace, The Abominable Snowmen , The Three Doctors)

More seriously, he had a gift for diplomacy and winning others over to his side. This may have been the reason why he was sent by the Time Lords to Space Station Camera to persuade Dastari to discontinue Kartz and Reimer's time travel experiments. (TV: The Two Doctors) This particular facet of his personality enabled him to trick others into doing what he wished. For example, he tricked Jamie into going through a series of tests designed to isolate the Human Factor. He was also able to trick the Daleks themselves into giving the Human Factor to test subject Daleks, and finally to administer the Dalek Factor to the Doctor himself, which he knew would only work on humans. (TV: The Evil of the Daleks) In a similar way, he convinced the War Chief to regard him as an ally (TV: The War Games) and pretended to go along with the Great Intelligence's brain transference operation in order to short-circuit the disembodied being. (TV: The Web of Fear)

He possessed telepathic ability, including being able to sum up knowledge into a physical cube and communicate it to the Time Lords. (TV: The War Games) He locked his mind in battle with the Great Intelligence and kept it occupied long enough for his friends to act against it (TV: The Abominable Snowmen). He also used telepathy to show Zoe Heriot his previous adventure with the Daleks via mental projection, (TV: The Wheel in Space) but found the process tiring. (TV: The Dominators) His abilities may have been greater than his last incarnation's, as he often had opponents seeking to take his mind to take for their own uses. The Master of the Land of Fiction had to trick him with his loyalty to Jamie and Zoe in order to gain partial control of his mind and will (TV: The Mind Robber) Even though it succeeded it could not fully gain control of his mind and attempted ceaselessly to trap him in its world. Other foes determined to gain his mind for their own uses included a weed creature, Chameleon infiltrators, Kroton masters, Daleks, Cybermen, and the Great Intelligence. Although the Androgum Chessene could read minds she could not read the Doctor when he was her drugged and helpless captive.

Habits and quirks
The second incarnation possessed a recorder, which he played to concentrate or while under stress. (TV: The Power of the Daleks onwards). This recorder was actually one of his tricks of obfuscation, and more elaborate than his simple sonic screwdriver. He had a separate mouthpiece that turned it into a spyglass (TV: The Invasion) or he would improvise it into a blowgun (TV: The Underwater Menace) or play a tune with a hidden message. He imitated playing his recorder to Jamie and Victoria and whistled the notes to "shave and a haircut" which Jamie answer-whistled back with "six bits", demonstrating there was at least this one "secret code" to communicate when under watch. This Doctor was so attached to his music that even when his future incarnations failed to remember him very well, they still remembered he used to play a "flute". (TV: The Two Doctors)

He displayed a fondness of music in other ways besides the recorder. He occasionally hummed bits of music (TV: The Krotons) and created a glass harmonica out of a water glass to pick the sonic lock in his Vulcan Colony cell. (TV: The Power of the Daleks) He had a silent whistle and a pair of bagpipes and told Jamie he could trade travel on the TARDIS for lessons. (TV: The Highlanders) In Atlantis he played his recorder and a small tambourine as part of his disguise. (TV: The Underwater Menace)

He easily donned disguises without self-consciousness to age, gender, or dignity. In Scotland, he posed as a German physician, calling himself Doktor von Wer, a washerwoman, and a wounded British soldier (TV: The Highlanders). In Atlantis he dressed as a strange, gypsy-like musician. In Atlantis he sent a note to Zaroff signed "Doctor W." (TV: The Underwater Menace)

Taking events more seriously, he impersonated the Examiner, who had been murdered. (TV: The Power of the Daleks) Against his will, he also impersonated Salamander, the Doctor's physical double. His performance was so convincing that Victoria tried to attack him. (TV: The Enemy of the World)

This Doctor introduced several qualities later picked up by future incarnations. The Doctor showed an interest in Tibetan Buddhism in this incarnation, although he referred to having made at least one prior visit to a Tibetan monastery centuries before (which of his first two incarnations made that visit was unstated). (TV: The Abominable Snowmen) He also first revealed to his companions his Five Hundred Year Diary (TV: The Power of the Daleks) and his sonic screwdriver. (TV: Fury from the Deep) He had the ability to pull almost anything out of his pockets, much like later incarnations. (TV: The Five Doctors)

The 500-year diary made its first appearance with the Second Doctor. He was often consulting it, looking up things as though double-checking his memory. His Companion Polly Wright noticed he used the pages for writing out complex calculations; he solved them when he needed to think, much like he played his recorder in order to think. (PROSE: Doctor Who and the Cybermen)

Appearance
The second incarnation dressed similarly to his earlier incarnation, though in far less natty fashion. The trousers were clownishly large and the cravat was replaced with a bow tie. He quickly abandoned the blue signet ring as it no longer fitted him. In his first adventure on Vulcan he possessed a tall stove-pipe hat. (TV: The Power of the Daleks) He switched between a plain white shirt and a bright or dull blue shirt quite often. (TV: The Five Doctors, TV: The Three Doctors, TV: The Two Doctors) He also early on expressed a liking for hats in general, stating about different head gear that he "would like a hat like that!" (TV: The Highlanders) He also occasionally wore an over-sized fur coat. (TV: The Abominable Snowmen, TV: The Ice Warriors, TV: The Five Doctors) In the 2000s, Polly described him as looking like "an unmade bed" (PROSE: The Nameless City) and "a bit sartorially challenged" to the Brigadier and compared his hairstyle to those worn by the Beatles (AUDIO: The Three Companions), as did John Benton (AUDIO: The Hexford Invasion), Isobel Watkins (PROSE: Who Killed Kennedy) and Ace. (AUDIO: The Light at the End)

He wore a battered old frock coat many sizes too large, which added to his clownish demeanor but demonstrated its usefulness as a secret arsenal of tools, gadgets, food, and seemingly frivolous objects. He was seen pulling things out of pockets that normally would not exist in such a coat; he carried the TARDIS' Time Vector Generator inside a pocket in his inner lining without seeming difficulty (TV: The Wheel in Space) and had a magnet hidden in a pocket sewn behind his outer breast pocket. (TV: The Invasion)

The second incarnation had longish, rumpled hair and blue eyes. Alternate accounts described his eyes as being "soft chestnut brown" (PROSE: Pluto) and later they appeared to change colour several times alternating between blue, grey, and green. (PROSE: Invasion of the Cat-People). In Prisoners of Time his eyes change color several times. After going on a stressful mission for the Time Lords where his new companion died, his dark hair turned to grey. (PROSE: World Game, TV: The Two Doctors)

Liz Shaw told her mother Dame Emily Shaw that the Doctor resembled a "geography teacher" when he first encountered UNIT. (AUDIO: The Last Post)

The Brilliant Book 2011
According to The Brilliant Book 2011 (a non-narrative based book), the Second Doctor met Winston Churchill in 1882, giving him lessons in Latin, including how to address a table in Latin.

Other matters

 * Rupert Davies, Valentine Dyall (later to play the Black Guardian and Slarn), and Michael Hordern were all approached for the role of the Second Doctor. All declined, as they didn't want to commit to a long-running series.
 * Matt Smith, in preparation for his role as the Eleventh Doctor, watched the Troughton serial The Tomb of the Cybermen, and fell in love with it. He describes Troughton as "rather wonderful" and as being his favourite Doctor. Smith's costume and mannerisms are reminiscent of Troughton's.
 * Almost half of the episodes from the Second Doctor's era have been lost, leaving only seven of Patrick Troughton's 21 TV stories still fully intact (excluding his appearances in multi-Doctor specials). Two further incomplete stories have been released commercially, with specially-created material to bridge the missing episodes. Surviving "orphan" episodes and footage have been released on the Lost in Time DVD collection.
 * The Second Doctor was the first incarnation to directly work with four of his other selves on television, though that turned out to be a number also attained by the Fifth Doctor by virtue of Time Crash. If one includes a story this wiki generally doesn't — Dimensions in Time — then it could be said that the Third and Sixth Doctors were on the "four-timer" list, as well. However, there was no actual "interaction" between Doctors in Dimensions.
 * Until Time Crash, the Second Doctor was the only incarnation to appear in all televised multi-Doctor stories. As of 2013, Troughton holds the record for working with the highest number of other incarnations, having directly interacted with four other Doctors: the First, Third, Fifth, and Sixth Doctors. Taking into account all performed media, however, the record-holder is Peter Davison.  His appearances on audio with the Sixth, Seventh, and Eighth Doctors add to his totals from The Five Doctors and Time Crash, to give a grand total of eight other Doctors.
 * The Second Doctor was the first incarnation to have his face integrated into the Doctor Who title sequence, beginning with The Macra Terror.

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