| Person | Type | Job | Role(s) |
|---|---|---|---|
 Arlene Golonka | Cast | Actress | Debbie (voice) (archive footage) |
 Casey Kasem | Cast | Actor | Shaggy Rogers / Sheriff (voice) (archive footage) |
 Dee Bradley Baker | Cast | Actor | Keeper (voice) (archive footage) |
 Don Messick | Cast | Actor | Scooby-Doo / Ghost (voice) (archive footage) |
 Frank Welker | Cast | Actor | Fred Jones / Scooby-Doo (voice) (archive footage) |
 Grey DeLisle | Cast | Actress | Daphne Blake / Dempsey (voice) (archive footage) |
 Heather North | Cast | Actress | Daphne Blake (voice) (archive footage) |
 Henry Corden | Cast | Actor | Ghost (voice) (archive footage) |
 Jeff Bennett | Cast | Actor | (voice) |
 John Stephenson | Cast | Actor | Ghost (voice) (archive footage) |
 Mel Blanc | Cast | Actor | Speed Buggy (voice) (archive footage) |
 Michael Bell | Cast | Actor | Mark (voice) (archive footage) |
 Mindy Cohn | Cast | Actress | Velma Dinkley (voice) (archive footage) |
 Nicole Jaffe | Cast | Actress | Velma Dinkley (voice) (archive footage) |
 Pat Fraley | Cast | Actor | Uncle Carl (voice) (archive footage) |
| Person | Type | Job | Role(s) |
