Judging from the above post, either an idiot, or a very bad joker.
Otherwise, I haven't seen enough of him to accurately form an opinion of him.
I guess from the little post's I've seen of his, he appears to fit in pretty fine. Not greatly prominent, but noticeable enough to note on a different occasion.
Overall, I'd say a nicely rounded person with no major dysfunctions, if the occasional case of possible stupidity or immaturity, but hey, that can describe most people on these forums.