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 Master (Doctor Who) stopped by the Doctor. The Master has featured in spin-offs of the series, which are of unclear canonicity and may not take place in the same continuity. The Master in these stories is, nevertheless, recognisably the same character. One of the most notable of these other appearances is David A. McIntee's "Master trilogy" of novels comprising "The Dark Path" and "First Frontier" in the Virgin Publishing lines and "The Face of the Enemy" for BBC Books, and the "Doctor Who" radio dramas produced by Big Finish Productions, in which Geoffrey Beevers has reprised the role, with a new incarnation being