A boy, 10 years of age, bearing a mind as big as his stomach. He wears a yellow shirt with denim overalls over his large diaper, and red sneakers. He prefers to stay in diapers, feeling science doesn't wait for potty-training. He may not have any friends or parents, but that's okay: it allows him more time for perfecting his MX-345 serum (his Big-Burp Juice) that makes him burp heavily, his gas worse and use his diaper more, showing he's as gross as he is kind, as well as smart.