The ghost of an Alcatraz prisoner haunts a skateboard competition.
- Casey Kasem as Shaggy Rogers
- Frank Welker as Fred Jones and Scooby-Doo
- Grey Delisle as Daphne Blake
- Mindy Cohn as Velma Dinkley
- Ryan Sheckler as Himself
- Nika Futterman as Rutie Banez
- Kevin Michael Richardson as Announcer and Red Guy
- Maurice LaMarche as Haze Ferlenguini
- Kevin McDonald as Julian Libris
- John DiMaggio as San Fran Psycho
Community content is available under CC-BY-SA unless otherwise noted.