Jean-Claude Magnum is a Hollywood actor who has starred in several Ninja Movies. He was a suitor and opponent of Mai Valentine. His name is a reference to actor Jean-Claude Van Damme.
Magnum entered Battle City and won five Locator Cards. Needing six to qualify for the finals, he challenged Mai to a Duel for a final Locator Card and the right to marry her. When he lost, he used Hollywood stunts and special effects in an attempt to kidnap her. He was stopped by Joey Wheeler.