Galaxima was an ancient alien conquerer who fought Super Soldier, Iron Lantern, Silver Visitor, and the JLX.
She is an immortal being from before the Big Bang. She is the cosmic devourer of worlds who came to Earth to find a worthy man to serve as her herald, and chose Joseph Raye. She is a threat so great that the JLX was forced to enlist the aid of there worst foes, The Magnetic Men, in order to combat her! All that concerns her is her eternal hunger, the hunger that must be fed so that GALAXIMA may live.
Galaxima later battled Iron Lantern and Super Soldier. After that, she became a member of the Silver Visitor's rogues gallery.