Doctor Who is played by just a single actor
The programme depicts the adventures of a Time Lord called `` The Doctor '' , an extraterrestrial being from the planet Gallifrey .	Time Lord	Time Lord	The Doctor	The Doctor (Doctor Who)	extraterrestrial being	Extraterrestrial life	Gallifrey	Gallifrey
Since the show 's inception in 1963 , the character has been portrayed by twelve lead actors .
