Joseph Watkins

Professor Watkins was a scientist, and the uncle of Isobel Watkins.

Biography
After inventing the Cerebration Mentor, Watkins was kidnapped by Tobias Vaughn, who forced him to develop it for use as a weapon against the Cybermen. He was later rescued by UNIT.

Watkins was at least an acquaintance of Professor Edward Travers and his daughter Anne, as they let out their London home to him while they were away in America. From them, Watkins learned much about the Second Doctor and the TARDIS. When he finally met the Doctor, his foreknowledge caught the Time Lord by surprise. (TV: The Invasion)

Behind the scenes

 * Watkins has never been identified with a first name, either in The Invasion or any spin-off media.