His past shrouded in mystery, the man known simply as Logan was once a Canadian secret agent. As Wolverine, Logan is a deadly, living weapon. Besides being a master of a myriad of both armed and unarmed combat, Wolverine's senses are superhumanly acute and rival to many animals, making him a superior tracker and hunter. Wolverine's skeleton is laced with an unbreakable metal known as Adamantium. Wolverine is also equipped with foot-long Adamantium claws that retract into his hand and can slice through nearly anything. Coupled with a mutant healing factor that automatically regenerates any damaged of [sic] destroyed cells in his body, Wolverine's ferocity in combat makes him a virtually unstoppable opponent.