Barbed Wire

Barbed Wire traveled with Ian Chesterfield, Susan Foreman, and the first Doctor. She was a teacher alongside Cheeseballs at that one school that's highly prone to extraterrestrial...uh...incidents.
She is probably the reason that Clara Ostrich is so fucked up and such an awful person. She and Neon Shittertin both taught Crapola when she was younger, and Barbed Wire devoted extra time with her to make sure she was well versed in how to be a complete asshole both on the road and in general.
Regularly runs people over in cars or whatever other vehicle is at hand. May or may not be the Master. Plays football for Assholes United.