Sabretooth: One of Wolverine's oldest enemies, the savage Sabretooth possesses the same healing factor and enhanced senses as his nemesis but without the compassion or honor - making him a non-stop killing machine.

Skrull: The Skrull race is among the most dangerous in the galaxy due to their unpredictable behavior and shape-shifting abilities. Their recent attempt to replace Earth's mightiest heroes backfired and dealt the Empire a crippling blow.