Katryca

Katryca was a human from the planet Ravalox in c. 2000000.

She was the leader of Tribe of the Free, a group of feral and wild humans, and did not understand much about technology since all lifeforms on Earth had been destroyed, and the planet was renamed Ravalox. She led a rebellion of her people into the under tunnels of Earth but was killed by the robot Drathro. (TV: The Mysterious Planet)

Behind the scenes
Lynda Baron, Honor Blackman, Isla Blair, Jill Bennett, Brenda Bruce, Adrienne Corri, Sheila Hancock, Janet Henfrey, Eartha Kitt, Rosemary Leach, Jean Marsh, Siân Phillips, Dinah Sheridan, Elizabeth Spriggs, Wanda Ventham and Fiona Walker were considered for the role before Joan Sims was cast.