Paul Marc Davis (born 16 April 1974) is a British actor who has appeared on Doctor Who (the episode "Utopia") and three of its spin-off series: Torchwood ("Exit Wounds"), The Sarah Jane Adventures (as recurring villain "The Trickster"), and Class (as recurring villain Corakinus). This makes him the only actor to appear in all four of the Doctor Who series. He was also an executive producer on Sports Day 3D.