Johnny meets the Scooby-Doo gang when his car breaks down before he gets to his aunt's house and when he gets to the house Johnny and the Scooby-Doo gang have to find his aunt and catch the Ghostly Gardener.
| Name | Type | Role | |
|---|---|---|---|
| Michael Ryan | Writer | ||
| Frank Welker | Guest Star | ||
| Casey Kasem | Guest Star | ||
| Hadley Kay | Guest Star | ||
| Jack Sheldon | Guest Star | ||
| Heather North | Guest Star | ||
| John McIntyre | Director |