Professor Kettering

Born, 19 December 1915
Died, 8 August 1980

Simon Lack played Prof. Charles Kettering in the Third Doctor episode, Mind of Evil in 1971. He returned in 1978 as Zadek, the Swordmater and right hand man of Prince Reynart in the Prisoner of Zenda remake that formed one of the Key to Time stories.  

Zadek The Swordmaster