Nyssa of Traken - Doctor Who

Nyssa is a fictional character in the long-running British science fiction television series Doctor Who. She is played by Sarah Sutton. Although Nyssa was created by writer Johnny Byrne for the single Fourth Doctor serial The Keeper of Traken, the production team subsequently decided she should be retained as a continuing character. Nyssa returned in the following serial, Logopolis, in which the Fourth Doctor regenerated, and remained as a companion of the Fifth Doctor. She was a regular in the programme from 1981 to 1983. Nyssa was a trained scientist with an expertise in bioelectronics and cybernetics. She is frequently referenced by female fans as a role model due to her intelligence.