Cuidado con la Bestia de las Alcantarillas

Frank Welker

Scooby-Doo / Fred Jones (voice)

Grey DeLisle

Daphne Blake (voice)

Mindy Cohn

Velma Dinkley (voice)

Matthew Lillard

Shaggy Rogers (voice)

Casey Kasem

Colton Rogers (voice)

Tony Cervone

Gary (voice)

Jeff Bennett

Professor Emmanuel Raffalo / Male Tourist (voice)

Gary Cole

Mayor Fred Jones Sr. / Foreman (voice)

Frances Conroy

Angie Dinkley (voice)

Mitch Watson

Ethan / Policeman (voice)

Vivica A. Fox

Angel Dynamite (voice)

Lewis Black

Mr. E (voice)

Patrick Warburton

Sheriff Bronson Stone (voice)

Dee Bradley Baker

Slime Mutant / Franklin Fruitmeir (voice)

Kevin Dunn

Dale Dinkley / Workman #1 (voice)

Kath Soucie

Nan Blake / Female Tourist (voice)

Fred Tatasciore

Workman #2 (voice)