Scooby-Doo / Fred / Lachlan Haggart (voice)
Shaggy (voice)
Velma Dinkley (voice)
Daphne Blake / Shannon Blake (voice) (as Grey DeLisle)
Duncan MacGubbin / Mcintyre (voice)
Del Chillman / Sir Ian Locksley / Harpoon Gunner (voice)
Colin Haggart / Volunteer #1 (voice)
Angus Haggart / Volunteer #2 (voice)
Professor Fiona Pembrooke (voice)