A different variant to the message or thread troll. This troll takes advantage of a characters ability and or game, becoming way too overpowered for his own good and others playing with him/her. With that power comes greed, selfishness and rubbing their good fortune in the other players faces. Pretty much turning into a dick legally inside the game. Not advancing towards the goal.
Every turn this guy would use his characters ability to "spam" or troll the game gaining way too much strength and craft. Making it impossible for another character or creature to defeat him. You cant get mad at the person because he's technically not doing anything wrong but they're just not any fun to play with.