Superwoman was one of the six main members of the Crime Syndicate in the Earth-3 universe that they inhabited. She had a relationship with fellow team member Owlman, whom she saw as nearly as psychopathic as she was if not more. Superwoman was one of the members who favored the use and development of a quantum-powered nuclear weapon that would destroy all life on Earth if the Earth governments refused to relinquish what little power they had left to the Crime Syndicate. She and Owlman had a much more sinister purpose for the weapon: to destroy all realities that have sprung from the one that he called Earth-Prime. The Crime Syndicate of Earth-3 is an evil counterpart of the Justice League from DC Comics' multiverse.