The shifting exothermic state of his transformations had a dangerous effect on Equinox's mental state, and he ultimately went on a rampage, engaging in conflict with the superheroes Spider-Man, Yellowjacket, and the Wasp, during which his origin was revealed.
Equinox's transformation underwent a phase shift, causing a severe psychological effect that prompted him to become violent and engage in battles with Spider-Man, Yellowjacket, and the Wasp, ultimately revealing his origins.