Murphy

At first glance, Murphy is a daredevil, ready to perform the most daring tricks. He often breaks rules and tries to maintain a "cool" persona, especially in presence of younger kids. This, however, proves to be a cover for an introverted kid who isn't that good at what he's doing in the first place and often gets injured. Being an introvert only makes living in a crowded city more of a problem for him, but Murphy is still friendly most of the time, though he can act nasty if provoked (for example, he seems to enjoy hurting [bunny] due to finding her annoying, even though she appears to be younger than him and never antagonizes him intentionally). Although he and Mitzi are near polar opposites, and he gets annoyed with the girl's behavior at times, this doesn't stop them from remaining friends, even decades into the future as some animations and comics show, and Murphy is even shown standing up for Mitzi at times.