[MENTION=22178]magpie[/MENTION] i haven't watched much of the show, but i think he is an ISTP for the same reasons the people gave on the first page, but i like to add that i especially think that he is NOT an ISTJ because of the way he jumps into action with good faith that he will land on his feet and he does this in a pretty reckless and impulsive manner (gets hit by a car while he's suddenly running after someone). ISTJs would probably be a lot more careful and precise and would not leave as much to good faith. he also seems to be really motivated by just the thrill of it, which to me is more Se than any other function.