Superman II (1980)

Three escaped criminals from the planet Krypton, who have the same powers on Earth as Superman, test the Man of Steel's mettle. Led by General Zod, the Kryptonians take control of the White House and partner with Lex Luthor to destroy Superman and rule the world. But Superman, who made himself human in order to get closer to Lois, realizes he has a responsibility to save the planet.