Superman IV: The Quest for Peace is a 1987 superhero film directed by Sidney J. Furie, based on the DC Comics character Superman. It is the fourth and final film in the original Superman film series, and the first film in that series not to be produced by Alexander and Ilya Salkind, but rather by Golan- Globus' Cannon Films, in association with Warner Bros. Gene Hackman returned as Lex Luthor, who creates an evil solar-powered version of Superman called Nuclear Man.

References:
https://en.wikipedia.org/wiki/Superman_IV:_The_Quest_for_Peace