A 900-pound mountain of muscle, fur, and fury, the grizzly bear can sprint at 35 mph and decapitate a moose with a single swipe. Its claws measure four inches long and its bite can crush a bowling ball. Equally comfortable fishing for salmon or mauling anything foolish enough to wander near its cubs.

Born James Howlett but known to the world as Logan, Wolverine is the Canadian mutant who simply refuses to stay dead. His adamantium-laced skeleton is virtually indestructible, his healing factor can regenerate from a single cell, and his razor-sharp claws slice through anything short of Captain America's shield. Three centuries of combat experience make him the best there is at what he does—and what he does isn't very nice.