Superman IV The Quest for Peace (1987, Christopher Reeve, Gene Hackman, Jackie Cooper, Jon Cryer, Marc McClure, Margot Kidder, Mariel Hemingway)

Superman has recognized at last the greatest threat to humanity, and he is out to rid the world of nuclear weapons. But Lex Luthor, now a nuclear arms entrepreneur, creates Nuclear Man--a solar-powered Kryptonia Android and genetic clone whose powers equal (and potentially surpass) those of Superman--to rid the world of the Man of Steel.