Nutty is a yellow-green, sugar-addicted squirrel with a yellow, diamond-shaped marking on his head, and a big swirly tail that curves like a candy cane. He carries a small all-day **er, and one eye bares a slight resemblance to Flippy's "flipped-out" eyes. It is apparent that this googly eye is an amblyopia as it is almost always looking downward. It moves downward whenever the other eye moves in a different direction. Seeing something brightly colored, he will often mistake it for candy. He lives in a tree stump, where his home is in continual disarray. His bed has candy-cane legs, but he sleeps on candy wrappers on the floor.
As a result of his huge sugar intake, he is often hyperactive and jittery; even the slightest amount of sugar will set him off. He giggles more than he talks; he even giggles occasionally when he is dying. The only time he has ever been heard speaking was when he wished for a "scrumptious lollipop" in As You Wish. Deprived of sugar, Nutty foams at the mouth. He becomes very irritated and will do whatever it takes, as he supposes, to get his sugar fix, whether it be stealing candy, ignoring his friends—even precipitating his own death. Most of his deaths result from his obsession with candy. He is typically split apart, shredded, or stabbed through the chest.