Peter Sellers As Dr. Strangelove, Group Captain Lionel Mandrake, And President Merkin Muffley In Dr. Strangelove Or: How I Learned To Stop Worrying And Love The Bomb (1964)
Peter Sellers is another actor who’s behind multiple roles in multiple films. Besides Dr. Strangelove, he’s acted in at least three roles in The Mouse That Roared (1959), Soft Beds, Hard Battles (1974), and The Prisoner of Zenda (1979).