History
McCoy is originally from an alternate timeline in which Apocalypse conquered North America and mutants rule. McCoy was the head geneticist for the horseman Mister Sinister, and ran Sinister's slave pens in the area that was once New York. McCoy experimented on numerous mutants, creating the Infinite Soldiers for Apocalypse's forces, and advanced his own mutations.
After Sinister's death and a rebellion in the Slave Pens led by that timeline's Cyclops, McCoy fled to Apocalypse's Citadel in New York City. In a battle with that timeline's X-Men, McCoy teleported himself into the M'Krann Crystal, which is a nexus of all realities, and vanished.
McCoy found himself in the 'mainstream' X-Men's reality some twenty years in the past and settled in New York to continue his experiments. read more
