El Oso Monstruoso

Frank Welker

Scooby-Doo / Fred Jones (voice)

Grey DeLisle

Daphne Blake (voice)

Mindy Cohn

Velma Dinkley (voice)

Matthew Lillard

Shaggy Rogers (voice)

James Arnold Taylor

George Avocados (voice)

Tia Carrere

Judy Reeves (voice)

Tim Matheson

Brad Chiles (voice)

Kate Higgins

Mayor Janet Nettles (voice)

Udo Kier

Professor Pericles (voice)

Lewis Black

Mr. E (voice)

Patrick Warburton

Sheriff Bronson Stone (voice)