Mickey Mouse Works
Shelby makes his debut in the cartoon Donald's Shell Shots where Shelby is meant to take a photo at the mall. However, Donald is the photographer and matches wits with Shelby. Shelby would later go on to star as an advisory for the duck much like Chip 'n' Dale or his nephews. Shelby also went on with Mickey Mouse and Goofy in the cartoon Babysitters.
Shelby is often seen causing trouble for Donald Duck, or rare to Mickey Mouse. He doesn't speak but he is famous for his trademark laugh. He also can speak in thought as seen in "Donald's Pool". Shelby's mother Mrs. Turtle is overprotective of her son and will often yell if she can't find him, or if she gives someone an order.
- Baby Shelby resembles a child turtle in the Pluto cartoon Pluto's Surprise Package. It could be possible that this is in fact the "prototype" Shelby as the look exactly alike with different color schemes.