Sebastian Hiram Shaw is a fictional super-villain appearing in American comic books published by Marvel Comics. He has been frequently depicted as an adversary of the X-Men. A mutant, Shaw possesses the ability to absorb energy and transform it into raw strength. He is the leader of the New York branch of the Hellfire Club, an exclusive secret society bent on world domination, although to the public, he is a legitimate businessman and ordinary human. He once funded the mutant-hunting Sentinel program to keep it under his thumb.