Not much can truly be said about Whatnaught, as he never speaks. He tries to communicate through charades, though humans have difficulty understanding him. Even so, he is helpful and kind, often there to aid Sofia and friends in anything. He and Clover are partners in comedy, Whatnaught backing up his bunny buddy.
He has all kinds of brown fur color, pink ears, yellow eyes, and two front teeth. His ears are pointed making him looking like a red squirrel, although in the actual species their ears are tufted.
- Whatnaught is inspired by Harpo Marx, even sharing similar facial features, especially around the eyes, similar to Clover having a facial resemblance to his voice actor, Wayne Brady, and Mia's personality being modeled after Marilyn Monroe's.
- He is the only animal in the show to have five fingers.
- Despite his lack of appearances, he and Clover are known to be best friends.