Originally there were two Nuclear Men in
Superman IV: The Quest for Peace (1987). Mark played the second Nuclear Man, while the original
Nuclear Man was played by British actor
Clive Mantle, who proved to be
ineffective and was quickly destroyed by Superman (
Christopher Reeve),
with Mark being the improved version reforged from the remains of the
first Nuclear Man. All of Mantle's footage and virtually all references
to him were cut from the theatrical version of the film, leaving Mark
as the only Nuclear Man. The original Nuclear Man was also infatuated
with Lacey Warfield (
Mariel Hemingway) and the second Nuclear Man
remembered her, which is why he goes after her in the film's climax.
