Devon Werkheiser
Casper / Casper's Shadow (voice)
Acting
Brett DelBuono
Jimmy (voice)
Acting
Jim Belushi
Alder (voice)
Acting
Bob Saget
Dash (voice)
Acting
John DiMaggio
Stinkie / Frankengymteacher (voice)
Acting
Billy West
Fatso / Figurehead (voice)
Acting
Dan Castellaneta
Stretch (voice)
Acting
Kevin Michael Richardson
Kibosh (voice)
Acting
Matthew Underwood
Thatch (voice)
Acting
Christy Carlson Romano
Mantha (voice)
Acting
Candi Milo
Mickey (voice)
Acting
Nika Futterman
Monaco (voice)
Acting
Kendre Berry
Ra (voice)
Acting
Debi Derryberry
Banana Lady / History Teacher / Additional Voices (voice)
Acting
Pat Fraley
Scare Center Host 1 / Wolfie / Narrator / Werewolf / Additional Voices (voice)
Acting
Scott Menville
Punk Kid / Scare Center Host 2 / Pumpkinhead / Brainiac / Pool Guy / Hunchback / Additional Voices (voice)
Acting
Maurice LaMarche
Pirate / Thurdigree Burns (voice)
Acting
Kevin McDonald
Parrot (voice)
Acting
Terri Douglas
Fish Boy / Drip / Additional Voices (voice)
Production
John Kassir
P.A. Voice / Additional Voices (voice)
Acting
Phyllis Diller
Aunt Spitzy (voice)
Acting
Jason Harris
Gargoyle / Flyboy / Skinny Ghost / Coach / Additional Voices (voice)
Acting
Daryl Dragon
Murray (voice)
Acting
Toni Tennille
Belle (voice)
Acting
Danny Cooksey
Additional Voices (voice)
Acting
Fred Tatasciore
Additional Voices (voice)
Acting