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 Doctor (Doctor Who) about each other..." The narrative of series nine culminated in a three-part story arc in which Clara dies and the Doctor spends the next 4.5 billion years executing a gambit to change history and save her life. Further romance for the Twelfth Doctor was implied in the 2015 Christmas special, "The Husbands of River Song", in which this incarnation meets his one-time wife, River Song, for the first (and, narratively, the last) time. The spin-off media both before and after the television movie have toyed with the idea in various ways. In the 1995 Virgin New Adventures novel "Human Nature"