Sabretooth

Sabretooth, born Victor Creed, is Wolverine's most personal and persistent enemy — a feral, sadistic mutant with the same claws and regenerative healing factor as Logan, but none of the restraint. Sabretooth hunts Wolverine annually as a ritual on his birthday, a tradition rooted in a shared past neither fully remembers. Where Wolverine fights to be more than an animal, Sabretooth embraces it entirely, making him Marvel's definitive example of what Logan could become without his humanity.

Sabretooth Comics