Scooby-Doo / Fred Jones (voice)
Frank Welker
Shaggy Rogers (voice)
Matthew Lillard
Groundskeeper Amos (voice)
John DiMaggio
Upset Mother (voice)
Melique Berger
The Sheriff (voice)
John Stephenson
Sherman (voice)
Dee Bradley Baker
Treena (voice)
Olivia Hack
GPS (voice)
Dave Attell
Velma Dinkley (voice)
Mindy Cohn
Daphne Blake (voice)
Grey DeLisle
Madelyn Dinkley (voice)
Danica McKellar
Whirlen Merlin (voice)
James Patrick Stuart
Crystal (voice)
Crystal Scales
Marlon Whirlen (voice)
Brian Posehn
Mr. Calvin Curdles (voice)
Jeffrey Tambor
Mrs. Alma Rumblebuns (voice)
Diane Delano
Teleplay
Paul Dini
Misty Lee
Producer
Tony Cervone
Director
Original Music Composer
Robert J. Kral
Spike Brandt
Casting
Andrea Romano
Story
Alan Burnett
Editor
Jhoanne Reyes