Harold Saxon

Harold Saxon is a human alias used by an alien known as The Master. He is an antagonist featured on the British science fiction television series Doctor Who. This iteration of The Master appeared in the 2005 revival series and was first generated in the eleventh episode of series three, "Utopia", where he was played by actor John Simm. He was the main antagonists in the two follow-up episodes from the season, "The Sound of Drums" and "Last of the Time Lords". All three of these episodes pitted The Master against the Tenth Doctor.