Real-Life Boogeymen Actors Who Were Just as Scary Off-Camera

Off-screen, Sterling Hayden, who played the insane General Jack D. Ripper in Dr. Strangelove (1964), led an exciting life. During WWII, he ran guns as a decorated OSS agent. Hayden declined million-dollar contracts to live on a riverboat in Paris because he hated Hollywood. He demonstrated his independence by acting only to finance his love of sailing.