[quote=@boomlover]
[@Azereiah] the idea was for the whole aggressive killing machine thing only to become a thing when fighting. that was really the only thing XD
[/quote]

Honestly, that could still be done without being tied to a mental disorder. Plenty of completely healthy people go completely berserk when they fight - adrenaline kicks in, instinct takes over, the animal comes out. Plenty of completely healthy people also have a slight lack of empathy and social impediments. If he's afraid of explosive outbursts happening, then therapy for anger management is an option.

Edit: Really, I just like the general concept I think you're trying to go with. The character sheet outside of the context of this conversation looks nice enough conceptually and can go in any direction you want it to. I think folks are just questioning it because a conversation happened in the first place.