Musatobi is a short light brown squirrel mink with a white chest and muzzle. He wears red pants with no shirt, as well as brown boots. He also wears a black helmet with goggles on it, a purple cape, and a yellow bandanna.
After the Beasts Pirates' attack on Zunisha, Musatobi flew down to Zunisha's left front leg in order to inspect its injuries. He saw how severe the injuries were that it would cause the elephant to collapse, and quickly reported the news to Inuarashi and Nekomamushi. He was then relieved when the Straw Hat Pirates offered their services in treating Zunisha.