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"Captain John Hart" was an alias adopted by a rogue Time Agent after hearing his friend and lover Jack Harkness' choice of name. (TV: Kiss Kiss, Bang Bang)

In an alternate timeline of his own making, he was knighted Sir John Hart by his future wife Queen Victoria, becoming prince consort upon their marriage before eventually ascending to king of the British Empire following her death. (AUDIO: The Death of Captain Jack)


With the Time Agency[]

The two time agents, long before either chose their respective names. (COMIC: Secret Agent Man)

Hart was a former partner of Jack Harkness during their time in the Time Agency, both professionally, and sexually. During their time in the Agency, Hart was trapped in a two-week time loop with Jack for a period of five years. While briefly arguing over who the "wife" was in the relationship, Hart agreed that he had been "a good wife, too". (TV: Kiss Kiss, Bang Bang)

On another occasion, the two time agents faced off against a horde of Weeping Angels.

After two years of Jack's memory had been erased, John and other Time Agents refused to discuss it with him. (COMIC: Secret Agent Man)

He had been in rehab for drink, drugs, sex and even murder. By the time that Hart reunited with Jack, the Agency had closed. (TV: Kiss Kiss, Bang Bang)

After the Agency[]

At some point, John found Jack's younger brother Gray in a city on the Bedlam Outlands. Gray, consumed with wrath at his brother for having supposedly abandoned him, had turned against Jack. (TV: Exit Wounds)

Captain John Hart coming through the Rift. (TV: Kiss Kiss, Bang Bang)

Captain John killed the owner of canisters containing an explosive that latched onto the DNA signature of her killer, thinking that they would lead to an Arcadian diamond. She created a Rift storm and they came through the Cardiff Rift into Cardiff. He followed them through and asked Torchwood Three to help find these canisters, which he told them were radioactive bombs.

John stole the canisters from under Torchwood's noses, paralysing Gwen Cooper with paralysing lip gloss and wounding Owen Harper. He attempted to kill Jack, but he had become immortal. He sent Ianto Jones off to see if he could save the others and he succeeded.

John realising that the diamond he was hoping for is actually a bomb. (TV: Kiss Kiss, Bang Bang)

Finding the last piece on a Blowfish, the contents of the canisters formed into a bomb, and a hologram of the canisters' owner told him the truth about them. Using the DNA of the Torchwood Three crew, John superficially altered his DNA. Jack and Owen were able to save John's life and safely dispose of the bomb before forcing him back through the Rift, but not before he revealed to Jack he had found Gray. (TV: Kiss Kiss, Bang Bang)

Gray used John as an instrument of revenge. He molecularly bonded John's vortex manipulator to the skin on John's wrist and added a Ninth Generation Detonator to it. Gray then threatened to activate the detonator if John did not comply with his plans. (TV: Exit Wounds)

Captain John Hart in hologram form. (TV: Fragments)

Returning to Cardiff, John planted several bombs in an abandoned warehouse to trick the Torchwood team into being caught in. The team escaped from the rubble, injured but alive. At that point, Jack's vortex manipulator started to beep, revealing John in hologram form, showing that he had Gray. John told Jack he was going to wreak havoc in his world. (TV: Fragments)

John in 27 A.D. (TV: Exit Wounds)

Later, John lured Jack back to the Hub and killed him. With the others dealing with various aliens in Cardiff, John took Jack, who had came back to life, to 27 AD Cardiff, where he had met Gray. He was then ordered by Gray to bury Jack alive, but refused as he still loved his old friend, but Gray threatened to activate the detonator if he did not comply. Before he filled in the grave he threw a ring, which was really a tracking device, into the hole. John was then set free by Gray. He decided to go back to Torchwood and find Jack to save him, calling it a matter of honour. He was briefly imprisoned by Gray along with Gwen Cooper and Ianto Jones, during which time he sent out a recall signal that stopped a Weevil infestation of Cardiff. After Gray's defeat, and the subsequent deaths of Toshiko Sato and Owen Harper, Hart left the Hub. Jack offered to help pinpoint a Rift event that John could use to return to his own time, but Hart reflected that it might be interesting to explore the world and get a better feel for what Jack found so fascinating about the time period. (TV: Exit Wounds)

John Hart visited Ianto's funeral in 2009, watching from a distance and saying "Take care, Eye Candy". Some time afterwards, John ended up in Mexico, making a living, by buying and selling alien artefacts from a rift off the Gulf. There, he met Mairwyn who introduced herself as "Beatrice", and experienced "love at first sight". However, she stole an old-model vortex manipulator and went after Ianto Jones, two years prior to his death, in an attempt to make him change the timeline. Hart teamed up with Gwen's partner Rhys Williams, as Gwen was now a young mother, and sought out Ianto. (COMIC: Shrouded)

In 2016, Hart turned up at Torchwood House. He shot James Stirling III and stole the Astrolabe. (COMIC: World Without End)

After helping Torchwood defeat the Navigators, John stole Karina Stirling's TARDIS. (COMIC: Station Zero)


At some point John Hart's status as a thief became known to the Bank of Karabraxos. The bank's file on Hart was one of several accessed by augmented human hacker Psi when attracting the attention of the Teller away from Clara Oswald. (TV: Time Heist)


For the most part, Captain John Hart was a selfish, hedonistic sociopath prone to being treacherous and unreliable, to such an extent that Jack Harkness had three rules when dealing with him: the first was never trust anything he said, the second was to always keep him in front of you and the third was to never let him kiss you, which Hart accused Jack of making so he could have his lover all to himself. Hart had amazing physical strength, being able to lift a grown man in one hand and drop him off a roof. Like Jack, he was omnisexual, taking a sexual interest in both males and females, and, once, even a poodle, which he found "gorgeous". (TV: Kiss Kiss, Bang Bang) At the side of a dying Queen Victoria in an alternate timeline, he proposed "one last bit of how's your father" after she "shuffle[d] off." (AUDIO: The Death of Captain Jack) He and Jack were once lovers and, according to Jack, John was the wife in their relationship. (TV: Kiss Kiss, Bang Bang)

Although Hart was selfish and treacherous, he was not heartless and genuinely cared for Captain Jack Harkness, turning against Jack's brother Gray as soon as he was freed from his control. He also told Jack that he loved him and the only reason he assisted Gray was that he would get blown up if he didn't. John also felt sorry for Jack after the deaths of Toshiko and Owen. (TV: Exit Wounds)

John also proved to be easily bored by things and would move from committing one terrible act to another whenever the mood suited him; his access to time travel technology meant he also didn't hold temporal continuity in high regard, resorted to stealing Jack's immortality and turning loose various alien threats on the world just to appease himself, demonstrating that he also possessed psychopathic tendencies. (AUDIO: The Death of Captain Jack)

Alternate Timeline[]

He created an alternate timeline after travelling back to the 1880s. He married Queen Victoria. Jack at one point came after him to stop this but John shot him and trapped him in a device which sucked his life energy out of him. 130 years later he came back as Jack was dying and told him what he did with Torchwood. In the 1940s he told Norton Folgate to kill some witnesses to an alien landing. He later had Torchwood fake the Roswell crash to amuse him. He then planed to extend the British Empire and defended the Earth. After forcing Torchwood One to open the Void Ship he relocated to Cardiff after the Daleks destroyed the home counties. He had Gwen Cooper and Toshiko Sato killed and had Ianto Jones walk round the Torchwood Hub in kinky outfits. When The 456 came he gave them 10% of the children. When he was shown The Blessing he didn't care much of it. Jack later told him that when he died John would be left in this alternative reality and the world would reset to the original timeline. (AUDIO: The Death of Captain Jack)

Behind the scenes[]