Unable to pass as normal due to the external physical changes their mutations caused, the Morlocks squatted in a network of abandoned, interconnected tunnels beneath Manhattan, which had originally been built as Cold War bomb shelters and then forgotten. The Morlocks were largely a peaceful group but misguided attempts to gain something from the surface world occasionally brought them into conflicts. The most famous incident ended with Morlock leader Callisto losing a duel to Storm, who then was made their honorary leader.