My favorite Kon moments is personally when he's at the school; running around, and then he runs into Orihime, who just so happens to be playing soccer.. and, well, you know the rest-- he gets hit by the soccer ball.
And yeah, of the episodes with him I've seen, he kinda does act like a big perv.
And yeah, of the episodes with him I've seen, he kinda does act like a big perv.