The living embodiment of toxicity, corruption and disease, Gangrene is a massive lumbering beast resembling something like a Werewolf. His very skin is toxic to the touch, causing violent acidic reactions. He is brutal and malicious an utter monster and is shockingly intelligent; a high functioning psychopath with a thirst for destruction. He is a wildcard despite being one of Abysno's generals, he has his own agenda and the guardian Grifter seems to be his specific target. If he does target someone with a black diamond, his targets are often pure of heart, innocents such as children, priests nurses those that dedicate their lives to others.

He has a deep, dark ferocious voice with a mad sense of humor, and he tends to growl as he speaks. Think of the most terrifying voice to go bump in the night and add malice to it.