Uncontrollable power

Ok maybe they have an ancient and powerful being sealed within them or awesome power that belongs solely to them. Or perhaps when they get pissed enough they are naturally beyond even the final boss. Maybe they were never human to begin with. Regardless once they get pissed enough they go ape-shit insane and beat the fuck out of everyone maybe even friends and family leaving nothing but a new paint scheme and severed body parts all over. Basically if the main character isn't human or at the very least barely human and gets a major power boost by by going berserk then put it in the list.

Plucky

Chellle

abbodon

erching

DespairInBeauty

Sajaho

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