Dorothea "Dodo" Chaplet is a fictional character played by Jackie Lane in the long-running British science fiction television series "Doctor Who". An Earth teenager from the year 1966, she was a companion of the First Doctor and a regular in the programme in its third season, from February to July 1966. Only three of the serials in which Dodo appeared as a regular are complete in the BBC archive ("The Ark", "The Gunfighters" and "The War Machines"). Dodo's personality was an unsophisticated, bright and happy one.