Phibes infiltrates Shaggy and Scooby's mansion in his new cat guise while our heroes hold a dog show. Robi even enters his home-made mechanical dog, Sparky, into the show.
| Name | Type | Role | |
|---|---|---|---|
| Ray DeLaurentis | Writer | ||
| Scott Menville | Guest Star | ||
| Jim Meskimen | Guest Star | ||
| Frank Welker | Guest Star | ||
| Jeff Bennett | Guest Star | ||
| Charles Visser | Director |