Tenth Doctor

The Tenth Doctor is the latest known incarnation of the Time Lord known as the Doctor.

Profile
When the Doctor absorbed the Time Vortex from his companion, Rose Tyler, it began to destroy every cell in his body, causing him to resort to regeneration to save his life. (DW: The Parting of the Ways) He piloted his TARDIS back to Powell Estate on Christmas Eve and, as he had after some of his other regenerations, fell into a coma, watched over by Rose and her mother, Jackie. He sprang into action again to save Rose from the robotic Christmas Tree before lapsing into the coma again and re-awoken onboard the Sycorax ship where he defeated their leader and deposed the regime of Harriet Jones, his former ally. He then spent Christmas Day with Mickey Smith and the Tylers. (DW: The Christmas Invasion)

The Doctor and Rose traveled to New Earth, where they found a hospital run by cat nuns, and found out that they were experimenting on humans. The Doctor met the Face of Boe, who predicted they would meet one last time. (DW: New Earth)

Back in time and space again with Rose, in 1879 Scotland, he and Rose met Queen Victoria and inadvertantly inspired the Queen to create the Torchwood Institute, an organisation unfriendly to the Doctor. (DW: Tooth and Claw)

Under cover as John Smith, a physics teacher at a high school which the Krillitanes had infilitrated, the Doctor re-united with his old friends Sarah Jane Smith and K-9. He also took on Mickey Smith as his companion. (DW: School Reunion)

He fell in love with Reinette, a beautiful noblewoman in 18th century Versailles and saved her from the Clockwork Droids. (DW: The Girl in the Fireplace)

On a parallel Earth, he witnessed the birth of that universe's Cybermen and saw off Mickey, who decided to stay on the other world. (DW: Rise of the Cybermen/The Age of Steel)

He visited 1953 England, at the time of Queen Elizabeth II's coronation. There, he stopped The Wire from sucking all of England's faces. (DW: The Idiot's Lantern).

After that, he went to Krop Tor in orbit of a black hole. There, he encountered The Beast, stopped an army of possessed Ood, and saved the crew of Sanctuary Base 6 from the black hole (but he couldnt' save the Ood, as Krop Tor was sucked in). (DW: The Impossible Planet/The Satan Pit)

The Doctor had killed an Elemental Shade, where Elton Pope first witnessed him. After that, he hunted the Doctor under the orders of Victor Kennedy. It was revealed he was being used by the Abzorbaloff who wanted to absorb the Doctor. The limitation field of the Abzorbaloff was destroyed, melting it. (DW: Love & Monsters)

He also witnessed the 2012 Olympics, and carried the Olympic torch himself. On the same day he had stopped the Isolus. (DW: Fear Her)

After that, he travelled back to the present, to find artificial ghosts on the streets. It was revealed that these so-called ghosts were really Cybermen coming through from Pete's World. At the same time, the Torchwood Institute had captured a Void ship, which contained the Cult of Skaro and a Genesis Ark. The Cult had released the Ark, which was a prison ship for millions of Daleks. The Battle of Canary Wharf had occured, but the Daleks and Cybermen were sucked back into the Void by the Doctor. But he lost Rose to the parallel universe, with her family. The breach was sealed, and he could never see Rose again. (DW: Army of Ghosts/ Doomsday'')

After grieving over Rose, a bride named Donna Noble had mysteriously appeared aboard the TARDIS. The Doctor was as shocked as she was, and tried to take her back to her wedding. But she was used in a plot to destroy the Earth and revive the Racnoss. The Doctor had used the water from the River Thames to flood the Racnoss and drown them. (DW: The Runaway Bride)

Personality
Like his predecessor, this Doctor was capable of boundless enthusiasm, though in his case often at inappropriate times. While many Doctors have intentionally flouted social conventions, the Tenth seems to be genuinely surprised when he is rude or uncouth. Charismatic and manic and with boundless energy, he retained and even exceeded his last incarnation's capacity for righteous anger, especially when Rose was threatened, as when the Wire stole her face. (DW: The Idiot's Lantern). When driven by anger or righteousness, he would act without hesitation to strike down those who oppose him, for example in toppling the regime of Harriet Jones with just six well-chosen words after she committed what the Doctor considered mass murder. (DW: The Christmas Invasion). While he had resolved much of the survivor's guilt felt previously, he was is beginning to feel his age and, behind the outward playfulness, he feels a deep loneliness. His keen sense of loss leads him to empathise with those who have also suffered.

But there was an undeniable shadow cast over the jollity of the Doctor. He had a ruthlessness, bordering on arrogance, that was almost eerie to behold. Beneath his youthful veneer, the Doctor is a very old man who has seen many terrible things; and in some matters, his patience has worn out. His usual jolly demeanor has somewhat disappeared since the departure of Rose. He was a little angrier, darker, and not as friendly towards Donna or Martha. This suggests that he never really got over Rose's leave-taking.

Habits and Quirks
The Doctor made frequent reference to twentieth century pop culture, from the Ghostbusters theme (DW: Army of Ghosts) to the song, "The Circle of Life" from The Lion King (DW: The Christmas Invasion). He had also read the Harry Potter books, saying that he cried after reading the seventh book (DW: The Shakespeare Code). He's fond of rock and roll, trying to take Rose to see concerts by both Elvis Presley (DW: The Idiot's Lantern) and Ian Drury (DW: Tooth and Claw), and dresses in the manner of an indie Brit-pop musician. He wore reading glasses and trainers. He often remarked that exotic technology or life is "beautiful" and is genuinely enthralled by such discoveries, sometimes to the extent that he places himself or his companions in danger.

Until they left his life, he continued his previous incarnation's habit of mildy abusing both Mickey and Jackie, though generally in a more obviously playful fashion.