Cast (16)
Grey DeLisleDaphne Blake (voice)
Matthew LillardShaggy Rogers (voice)
Mindy CohnVelma Dinkley (voice)
Frank WelkerScooby-Doo / Fred Jones (voice)
Danica McKellarMadelyn Dinkley (voice)
James Patrick StuartWhirlen Merlin (voice)
Crystal ScalesCrystal (voice)
Brian PosehnMarlon Whirlen (voice)
Jeffrey TamborMr. Calvin Curdles (voice)
Diane DelanoMrs. Alma Rumblebuns (voice)
John DiMaggioGroundskeeper Amos (voice)
Melique BergerUpset Mother (voice)
John StephensonThe Sheriff (voice)
Dee Bradley BakerSherman (voice)
Olivia HackTreena (voice)
Dave AttellGPS (voice)