Wendigo

WendigoReal Name: Unknown

The Wendigo is a supernatural creature, created when a human consumes human flesh and is cursed thereafter.  Over time, multiple people have been afflicted with the curse.

The Wendigo is possessed of extraordinary strength and durability - almost Hulk-level - and an animal cunning and savagery. The Wendigo's fingers and toes are tipped with razor sharp, retractable claws that are capable of piercing even the Hulk's skin.

 It escaped during the "Breakout" from its imprisonment in the Raft, but has been recently recaptured by the Avengers.