Well I'd say you're probably better off asking them, but I think I'm perceived most as the "nice" one as I'm quite gentlemanly and do go the extra mile for my mates. I also have a reputation for being quite intelligent. Don't know how that came about because I'm really not that clever but I'm not complaining.
I'm also a lazy, massively sarcastic, bass playing, metal head, liberal, vegetarian so I would also accept any combination of those answers.
Edit: Oh and also my girlfriend has the theory that I'm some kind of robot. Might be because she thinks I'm emotionless because I told her I didn't cry at Bambi when the mother got shot.