My group has a wide range of personalities in it. One guy is really sadistic, another is laid back, one guy is the know it all. But there is this one guy that just, I don't know...
He's always unbalancing the campaign. He just made a character that had relatively low powers but his characteristics made the guy almost impossible to hit. He also has a high strength, speed, ego and intelligence. Other than an area affect attack or a lucky roll, most villains will be unable to hit him physically, or mentally.
I know some of you have probably run into players like this. How have you found to be the most effective way of dealing with them without alienating him/her?