[quote=@BelatedGamer]
The nihilist-wannabe character who's too cool/dark to care about anything also applies.
[/quote]

These type of people also tend to be incessant godmoders and powerplayers. They often want to triumph above all others on the roster, and I've seen quite a few powerplay their characters to the top before the GM interfered. And, worst of all, I feel for the GM who has to deal with it. Having been in that situation before (both in RPs where I watched it play out, and RPs where I was the GM), its hard to get through to these people that their character isn't fitting the bill. They'll fight you on it, but instead of logically dropping out of the RP, they want to justify to you that their character belongs, even when it really doesn't. They also try so hard to say "I'm not a godmoder/powerplayer" when all prior evidence contradicts it...