Frank Welker
Scooby-Doo / Fred Jones / Dynomutt (voice)
Mindy Cohn
Velma Dinkley (voice)
Grey DeLisle
Daphne Blake (voice)
Matthew Lillard
Shaggy Rogers (voice)
Diedrich Bader
Brad Adams (voice)
Dee Bradley Baker
Hideous Hyde Hound / Horten / Minotaur (voice)
Jeff Bennett
Owen Garrison (voice)
Gregg Berger
Hank Prince / Zorak (voice)
John DiMaggio
Mr. Hyde (voice)
Nika Futterman
Jennifer Severin (voice)
Kevin Michael Richardson
Mayor Ron Starlin (voice)
Mindy Sterling
Caterer (voice)
Tara Strong
Austin / Princess Garogflotach (voice)
Fred Tatasciore
Jack Rabble / Cruel Dynomutt (voice)
Billy West
Becker (voice)