Colin Charles Baker is an English actor. He is known for playing the sixth incarnation of the Doctor in the BBC science fiction series Doctor Who (1984–1986) and Paul Merroney in the BBC drama series The Brothers (1974–1976). He has also performed prolifically in stage productions across the UK, particularly pantomimes. Sixth Doctor: 22 March 1984 – 6 December 1986. First regular appearance: The Twin Dilemma Part One. Last: The Ultimate Foe Part Two. Wiki link