Controller

The Controller was the Daleks agent in charge of a section of England.

He was charged with eliminating the guerrillas trying to travel in time to change the future in order to to prevent the Daleks starting World War III

He captured Jo Grant after she used a time machine to travel from the 20th century to the 22nd, and in turn met the Third Doctor. After speaking with them he let them escape from the compound. He lost his life when he was exterminated by his former masters.