Frank Welker
Scooby-Doo / Fred Jones (voice)
Acting
Matthew Lillard
Shaggy Rogers (voice)
Acting
Mindy Cohn
Velma Dinkley (voice)
Acting
Grey DeLisle
Daphne Blake (voice)
Acting
Danica McKellar
Madelyn Dinkley (voice)
Acting
James Patrick Stuart
Whirlen Merlin (voice)
Acting
Crystal Scales
Crystal (voice)
Acting
Brian Posehn
Marlon Whirlen (voice)
Acting
Jeffrey Tambor
Mr. Calvin Curdles (voice)
Acting
Diane Delano
Mrs. Alma Rumblebuns (voice)
Acting
John DiMaggio
Groundskeeper Amos (voice)
Acting
Melique Berger
Upset Mother (voice)
Acting
John Stephenson
The Sheriff (voice)
Acting
Dee Bradley Baker
Sherman (voice)
Acting
Olivia Hack
Treena (voice)
Acting
Dave Attell
GPS (voice)
Acting