Invincible Troll, Help with an annoying player/character Options

[Masterofthegame]

Okay, I have a problem. I have a troll in my group that has become truly obnoxious, and the last time he played kind of put it over the edge. He's so tough that the group has been sending him into fights alone, and just giving him cover.

Without specifically targeting him with high-force spirits or something I'm not sure how to realistically make him aware that he's not all-powerful. He doesn't even have a huge amount of Karma. 30 or 40 maybe. The problem is that he has a high body and high willpower, coupled with great armor and the group mage counterspelling he's nearly invincible. Follow that up with a quick improved invisibility, and he's nigh-unstoppable.

Add in a combat axe, Ares Alpha, and a Ruger super warhawk, and he's a killing machine. In the last game he got a lucky shot against a Citymaster with his warhawk, stopping it in its tracks, and then killed everyone inside when the troops came out to fight him. His high force invis made him almost impossible to hit, and his armor stopped anything that did hit. Between the mage's counterspells and his willpower, not even the old manabolt works.

He's so convinced that he has the ultimate character build that it has gotten obnoxious. All he ever does is talk about how he constantly saves the team.

So, what do I do? I know there is always the spirit option, and I've used it, which forced the team adept to actually get out and do something, but short of swarming him every time he gets out of the car, nothing seems to scare him.