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 26)
The twenty-sixth season of British science fiction television series "Doctor Who" began on 9 September 1989 with the serial "Battlefield", after a regular series of four serials was broadcast finishing with "Survival" which was the final episode of "Doctor Who" to air before a 16-year absence from episodic television following its cancellation.Sylvester McCoy and Sophie Aldred both continue their roles as the Seventh Doctor and Ace for their final season.Nicholas Courtney returned to play Brigadier Lethbridge-Stewart in "Battlefield". He first appeared with the Second Doctor in 1968 in "The Web of Fear" before becoming a recurring character throughout the Second Doctor to the Fifth Doctor and last appearing in "The Five Doctors" (1983).