If faced with an opponant or battle that appears too tough for him, he will whine saying it's too strong of a battle and that there is no way his character would fight this battle. Such as recently, the party is 4 10th level characters and they had to battle a 19th level wizard, a 16th level sorcerer, a 15th level wizard, a beholder, and a runic guardian. Of course this battle does appear to be too powerful, the gaming group completely forgot (I have no idea how) that the previous adventure the PC's learned that the 15th level wizard was actually a spy out to stop this 19th level wizards plot. So the entire time before the battle, all I hear is whining. "Oh this is too powerful, we are out of our leagues. My character wouldn't fight this, he'd just walk away." and all of this junk. But of course the other PC's are going forward and fighting the battle so he reluctantly goes along.