I've talked to you some in IM already, but just to have it here for future reference- Gil(gamesh) is officially a Mad Scientist. He's usually rational, but when his genius really kicks in, so, usually, does the crazy. And, though this hasn't been explicitly confirmed, he seems to have more fine control over his own mania than others- he's been seen to almost deliberately slip into the higher levels of nutcase at times when a berserk ranting fury would confer an advantage in intimidation or combat, and come down quickly when it was no longer needed, when everyone else seen to get that crazy had to be drugged or knocked unconscious.

Which could be interesting.