Third Doctor 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 wily but less action-oriented predecessors. While previous
The Doctor (Doctor Who) it is revealed that he also left to investigate the mystery of why good prevails in a universe where evil would seem to have so many advantages. It would be during his twelfth incarnation that the Doctor realizes his actions made the difference in the balance between good and evil in the universe. In other media, more has been revealed of the Doctor's early life. In the Past Doctor Adventures novel "Divided Loyalties", the Doctor recalls his Academy years in a dream induced by the Celestial Toymaker. According to this, he was a member of an organisation called the Deca,