Dr. Starline was an anthropomorphic platypus with white fur that covered most of his body. His bill was black-colored and narrow with nostrils on the front, and he possessed red eyes, black eyelids, and a thick tail. He also had three thick hair turfs on his head that were combed over the right side of his head. His front hair turf also possessed a gray highlight. Starline is a huge fanboy of Dr. Eggman. Looking up to his idol, he became scientist himself. He also owned many items to help him.