Major Gina DiMedici was an agent of a high-tech fanatical organisation called the Puritans. She was the leader of a time-travelling unit of Puritans, who wanted to prevent the Kherubim and the Daemonites from ever landing on Earth by going back in time and blowing up both spaceships.
She also tried to kill Max Cash, who infiltrated the Puritans and joined up with the WildC.A.T.S. to stop the time-travelling Puritans. Max defeated her and disarmed her, leaving her stranded on a prehistoric Earth.