Joe starts out as a panicky worrywart, to the point of him being a nervous wreck. However, this stems from Joe's strong sense of responsibility. As the oldest of the group, Joe takes it upon himself to be the voice of reason. He is also extremely clumsy, and often finds himself falling on his face or dropping things. As a teenager, Joe learns to calm down and is much more mellow and levelheaded, though he is every bit as clumsy as before.