My characters pass the personality test for that. Flint may be a rude thief and all, but he can't stand a maiden in distress. (Though he would run away screaming in panic if the reward of said maiden became too personal.)
Then there is Fervus. He knows a thing or two about Destruction and he summons the big stuff easily. He also helps people when he can though there is one minor detail that can get him into trouble if he isn't careful. He's a lich.
Then, there are plenty of other people who pass the personality test and might be the better choice.
