With Mystery, Inc. on the tail of a strange object in Nowhere, Kansas, the strange hometown of Eustice, Muriel, and Courage, the gang soon find themselves contending with a giant cicada monster and her winged warriors.
Matthew Lillard
as Shaggy Rogers (voice)
Thea White
as Muriel Bagge / Rich Old Lady (voice)
Grey DeLisle
as Daphne Blake / Frau Glockenspiel (voice)
Frank Welker
as Scooby-Doo / Fred Jones (voice)
Kate Micucci
as Velma Dinkley (voice)
Jeff Bennett
as The General / Self Help Book (voice)
Paul Schoeffler
as Katz / Le Quack / Narrator (voice)
Marty Grabstein
as Courage / Mr. McGill (voice)
Jeff Bergman
as Eustice Bagge / Computer / Mayor of Nowhere (voice)
Chuck Montgomery
as The Lieutenant / Mr. Glockenspiel (voice)
