Sean Pertwee (born 4 June 1964) is an English actor well known for his film and voice over work. He is the son of Jon Pertwee, who was best known for playing the third incarnation of The Doctor in the long-running television series Doctor Who.
At the end of the 22nd Century, Commander John Shepard, an N7 soldier of the Systems Alliance, and commanding officer of the SSV Normandy, and his crew of humans and aliens must stop a rogue alien madman from unleashing a greater threat than ever
