Frank Welker

as Fred Jones / Scooby-Doo (voice)

Mindy Cohn

as Velma Dinkley (voice)

Matthew Lillard

as Shaggy Rogers (voice)

Grey DeLisle

as Daphne Blake (voice)

Dee Bradley Baker

as (voices)

Carlos Alazraqui

as Havros Menkle / Clete the Janitor (voice)

Crispin Freeman

as Fabian Men (voice)

Fred Tatasciore

as Sinister Snowman / Santa Claus (voice)