Rancor is a resident of the alternate future known as the 31st Century, or
Earth-691, and an inhabitant of the planet of
Haven; a world ran by
Nine mutants. She proclaimed to be the distant relative of the long-lived mutant
Wolverine and led the Nine. The eight other members were
Bat-wing,
Bear,
Blaster,
Blockade,
Mindscan,
Rhodney,
Shaddo, and
Side-step. Together this group of powerful mutants became a consistent thorn in the side of the future heroes known as the
Guardians of the Galaxy. During a search to regain the claw of Wolverine, Rancor fell into conflict with
Doctor Doom.