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) of "cousins" and not produced via sexual reproduction. "Lungbarrow" portrays the Doctor as being one of 45 cousins grown from his house's genetic loom as an adult. By contrast, the TV programme has shown Time Lords as children, and stated that Time Lords can have sexual relationships. The Doctor is assumed to be or to have been married to Susan's grandmother, including by head writer Steven Moffat. In "The Wedding of River Song", he marries recurring companion and love interest River Song. Comments by both River and the Doctor in the seventh series, particularly in "The Angels Take Manhattan", confirmed