What irritates me the hell out if the kind of player who just want to put themselves above others in terms of strength or whatever. It's like, they can't accept the fact that someone might be stronger than their character, no, that's impossible. Either they win the fight, or they whine at you with how much their character is an unkillable badass. Plain childish. And closely linked with an absurd called superiority complex.

Usually it's the same kind of player who only joins a roleplay so their character can rule everyone else, mostly in Naruto RPs, too.