Superman : 3-2-1 action! / [writers, Kurt Busiek, Mark Evanier ; pencillers, Rick Leonardi, Brad Walker, Steve Rude ; inkers, Ande Parks, John Livesay, Ben Reinhold ; colorists, Pete Patazis [and others] ; lettering, Comicraft [and others]].

Superman's friend and coworker, Jimmy Olsen, develops super powers of his own and becomes Mr. Action, and the two battle Kryptonite Man and other forces as Jimmy's past is revealed.