Devon Werkheiser
Casper / Casper's Shadow (voice)
Brett DelBuono
Jimmy (voice)
Jim Belushi
Alder (voice)
Bob Saget
Dash (voice)
John DiMaggio
Stinkie / Frankengymteacher (voice)
Billy West
Fatso / Figurehead (voice)
Dan Castellaneta
Stretch (voice)
Kevin Michael Richardson
Kibosh (voice)
Matthew Underwood
Thatch (voice)
Christy Carlson Romano
Mantha (voice)
Candi Milo
Mickey (voice)
Nika Futterman
Monaco (voice)
Kendre Berry
Ra (voice)
Debi Derryberry
Banana Lady / History Teacher / Additional Voices (voice)
