Buster (voiced by the late James Ingram) is a easygoing bloodhound from The Fearless Four. Whenever someone pulls on his tail, Buster becomes aggressive and wild. Buster's job was to hunt foxes, but he loved to sing and dance instead. So he escaped after the owners planned to have the Mix Max company kill and stuff him. After the Mix Max factory was destroyed, he and Gwendolyn admit their feelings for each other and sing together with Tortellini and Fred accompanied them.