Played by: Tom Baker 1974-1981
Biography: The longest running doctor. Travels to more that 30 worlds and faces foes from Daleks to Cybermen to Sontarrans.
Personality: Whimsical, hard to understand. Favorite snacks are jelly babies. Wears a freakishly long scarf.
Second title from season 18
Regeneration from Logopolis