Frank Welker

Scooby-Doo / Fred Jones / Lachlan Haggart (voice)

Casey Kasem

Shaggy Rogers (voice)

Mindy Cohn

Velma Dinkley (voice)

Grey DeLisle

Daphne Blake / Shannon Blake (voice)

Michael Bell

Duncan MacGubbin / Mcintyre (voice)

Jeff Bennett

Del Chillman / Sir Ian Locksley / Harpoon Gunner (voice)

John DiMaggio

Colin Haggart / Volunteer #1 (voice)

Phil LaMarr

Angus Haggart / Volunteer #2 (voice)

Sheena Easton

Professor Fiona Pembrooke (voice)