Casey Kasem
Shaggy (voice)
Grey DeLisle
Daphne (voice)
Mindy Cohn
Velma (voice)
Kathy Kinney
Sheriff Ellen Perkins (voice)
Frank Welker
Fred / Scooby-Doo / Headless Snowman (voice)
Peter Scolari
Professor William Fagen Higginson (voice)
Mark Hamill
Tommy's Father (voice)
Daryl Sabara
Tommy (voice)
Jim Belushi
Asa Buckwald (voice)