All Cast

Frank Welker

Frank Welker

Scooby-Doo / Fred Jones (voice)

Matthew Lillard

Matthew Lillard

Shaggy Rogers (voice)

Mindy Cohn

Mindy Cohn

Velma Dinkley (voice)

Grey DeLisle

Grey DeLisle

Daphne Blake (voice)

Danica McKellar

Danica McKellar

Madelyn Dinkley (voice)

James Patrick Stuart

James Patrick Stuart

Whirlen Merlin (voice)

Crystal Scales

Crystal Scales

Crystal (voice)

Brian Posehn

Brian Posehn

Marlon Whirlen (voice)

Jeffrey Tambor

Jeffrey Tambor

Mr. Calvin Curdles (voice)

Diane Delano

Diane Delano

Mrs. Alma Rumblebuns (voice)

John DiMaggio

John DiMaggio

Groundskeeper Amos (voice)

Melique Berger

Melique Berger

Upset Mother (voice)

John Stephenson

John Stephenson

The Sheriff (voice)

Dee Bradley Baker

Dee Bradley Baker

Sherman (voice)

Olivia Hack

Olivia Hack

Treena (voice)

Dave Attell

Dave Attell

GPS (voice)