Mutant member of the super soldier program, Weapon X. He was a former partner of Wolverine in Weapon X and like most aspects of Wolverine's past, the details of their falling out are hazy. Sabretooth's primary mutant power is an accelerated healing ability that allows him to regenerate damaged or destroyed areas of his body far beyond the capabilities of an ordinary human. He also possesses vastly enhanced animalistic strength, speed and agility, and razor sharp claws on each hand.