Third Doctor See List of non-televised Third Doctor stories. Third Doctor The Third Doctor is an incarnation of the Doctor, the protagonist of the BBC science fiction television series "Doctor Who". He was portrayed by actor Jon Pertwee. Within the series' narrative, the Doctor is a centuries-old Time Lord alien from the planet Gallifrey who travels in time and space in his TARDIS, frequently with companions. At the end of life, the Doctor can regenerate his body; as a result, his physical appearance and personality change. Pertwee portrays the third such incarnation, a dapper man of action of stark contrast to his
The Invasion (Doctor Who) The Invasion (Doctor Who) The Invasion is the partly missing third serial of the sixth season of the British science fiction television series "Doctor Who", which was first broadcast in eight weekly parts from 2 November to 21 December 1968. It marks the first appearance of UNIT and, notably, Corporal Benton, later to become a Sergeant during the Third Doctor era. It was the first incomplete "Doctor Who" serial to be released with full-length animated reconstructions of its two missing episodes. After escaping the Land of Fiction, the Doctor, Jamie and Zoe find that they have materialized near the Moon