Butler (Invasion of the Dinosaurs)

Butler was an assistant to Sir Charles Grover and Professor Whitaker during Operation Golden Age. He was knocked out by the Third Doctor and arrested by UNIT when they raided their bunker. (TV: Invasion of the Dinosaurs) Butler had a scar as a result of falling through a plate glass roof while working as a fireman. (PROSE: Doctor Who and the Dinosaur Invasion)