1. The black parts of his body are made of pure rubber, so his buttcheeks make squeaky noises when he walks.
2. The green parts of his body are firmer but still a little soft.
3. He has no bones or internal organs or whatever. Nobody knows how he lives at all.
4. His thrumps (lower black parts) expand when he rubs his sproozy (groin area) or pleasures his bontch (anal area) until, after long enough, a huge volume of hot gas escapes. He calls it a bontchgasm.
5. Whether or not he wears a shirt depends on his mood I guess.