The Doctor (Doctor Who)
The Doctor is the title character in the long-running BBC science fiction television programme "Doctor Who". Since the show's inception in 1963, the character has been portrayed by thirteen lead actors. In the programme, "the Doctor" is the alias assumed by a centuries-old alien—a Time Lord from the planet Gallifrey—who travels through space and time in the TARDIS, frequently with companions. The transition to each succeeding actor is explained within the show's narrative through the plot device of "regeneration", a biological function of the Time Lord race that allows a change of cellular structure and appearance with recovery following a potentially fatal injury.
Doctor Who (season 2)
The second season of British science fiction television series "Doctor Who" began on 31 October 1964 with the story "Planet of Giants" and ended on 24 July 1965 with "The Time Meddler". Only 37 of 39 episodes exist in the BBC archives; 2 remain missing. As a result, 1 serial is incomplete.William Hartnell continued his role as the First Doctor accompanied by his original companions: his granddaughter Susan Foreman (Carole Ann Ford), and schoolteachers Ian Chesterton (William Russell) and Barbara Wright (Jacqueline Hill).