Born with the ability to create uncontrollable waves of devastating power, Tim Fitzgerald lived in constant fear of hurting innocent people. His whole life was changed, though, when he witnessed an assassination attempt on mutant activists Xi'an Chi Xan. Unleashing his power and saving Xi'an's life, Fitzgerald, now Skullfire, was offered membership in Xi'an's new team of mutant protectors, the X-Men. Now he fights for the good of mankind, ever hoping that he'll someday be able to control his explosive emissions!