Wendigos

Wendigos are spirits of cannibalism, those possessed by them begin manifesting Wendigo Psychosis, synonyms include but are not limited to, cannibalistic tendencies, hyper-aggression, and excessive greed. Most look like normal people, and gain unnatural strength, agility and speed. However if Nercozama's plan is completed, the wendigos will gain unlimited power in a human's body, and that body mutates to become a hideous and horrifying husk of what it once was.