- Flim-Flam (from Top 13 Ghosts of Scooby Doo) as Gumball Watterson
- Scrappy-Doo (from Scooby Doo) as Darwin Watterson
- Velma (from The Scooby Doo Show) as Anais Watterson
- Daphne Blake (from The Scooby Doo Show) as Nicole Watterson
- Fred Jones (from The Scooby Doo Show) as Richard Watterson
- Pebbles (from The Flintstones) as Penny Fizgerald
- The Announcer as Principle Brown
- Blubbler Bear as Rocky
- Rufus Ruffnut as Mr. Small
- Sgt. Blast as The Donut Sheriff
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