A mutant with the ability to stretch the fat desposits in his body, Phat can appear to be normal or morbidly obese. At first his powers manifested as simple weight gain, which he put down to the stress of his life. He is first seen attending a community meeting, listening to the heated debate on the mutant cure. He joins Magneto and his Brotherhood of Mutants’ attack on Alcatraz Island. Phat is killed in battle, after being frozen by Iceman, and shattered by the punch of Colossus.