Cast
- Schroeder as Greg
- Patty Swanson as Murray/Simon
- Violet Gray as Anthony
- Linus Van Pelt as Jeff/Lachy
- Shermy as Sam Moran
- Freida as Dorothy the Dinosaur
- Charlie Brown as Wags the Dog
- Rerun Van Pelt as Henry the Octopus
- Sally Brown as Magdalena the Mermaid
- Marcie as Flora Door