The Doctor

The Doctor is the title character in the long-running BBC sci-fi series Doctor Who, and has also featured in two cinema feature films and one made-for-television film, as well as a vast range of spin-off novels, audio dramas and comic strips connected to the series. Within the show, "the Doctor" is the alias assumed by a centuries-old alien who travels through space and time in his TARDIS, frequently with companions.

To date, thirteen actors have headlined the series as the Doctor (William Hartnell, Patrick Troughton, Jon Pertwee, Tom Baker, Peter Davidson, Sylvester McCoy, Paul McGann, John Hurt, Christopher Eccleston, David Tennant, Matt Smith and Peter Capaldi), with the transition from actor to actor explained within the narrative of the show through the plot device of "regeneration", a biological function of his race allowing them to completely change their cellular structure and appearance so as to recover from a fatal injury. Several other actors have played the character on stage and film, in audio dramas, and in occasional special episodes of the series.

In Doctor Snakeycorp, The Doctor's first appearance is him crash-landing through the roof of the General Science complex in 1956 due to his TARDIS monitor failing in the Season 1 Episode 1 pilot titled "Pilot". The Doctor then is hired as Cheif Test Subject later the same day, then is fired in 1965 by Dr. Spudus Potato, but the Doctor is still a big part of the Doctor Snakeycorp crossover series.