A renegade Time Lord and archenemy of the Doctor. The Master brings death, danger and chaos to every story in which he appears. The charismatic villain first appeared in 1971 in Terror of the Autons, immediately establishing himself as a worthy opponent. He was merciless, highly intelligent and willing to use futuristic firepower whenever he felt threatened, shrinking victims with his lethal 'tissue compression eliminator'. In The End of Time, an unstable Master returns to unleash a deadly plan in David Tennant's final episodes as the Tenth Doctor.