Frank Welker

Scooby Doo / Fred Jones (voice)

Grey DeLisle

Daphne Blake (voice)

Matthew Lillard

Shaggy Rogers (voice)

Kate Micucci

Velma Dinkley (voice)

David Herman

Jack / Sheriff (voice)

Janell Cox

Cat Person / Sister Withers (voice)

Cassandra Peterson

Elvira (voice)

Roger Rose

Lead Cat Person / Narrator (voice)

John Michael Higgins

Alan Smithee (voice)

Travis Willingham

Seaver (voice)

Dave B. Mitchell

Driver / Ferry Captain (voice)