While the gang travel to Scotland to visit Daphne's cousin and witness the annual Highland Games, they find themselves terrorized by the legendary Loch Ness Monster.
Frank Welker
as Scooby-Doo / Fred Jones / Lachlan Haggart (voice)
Casey Kasem
as Shaggy Rogers (voice)
Mindy Cohn
as Velma Dinkley (voice)
Grey DeLisle
as Daphne Blake / Shannon Blake (voice)
Michael Bell
as Duncan MacGubbin / Mcintyre (voice)
Jeff Bennett
as Del Chillman / Sir Ian Locksley / Harpoon Gunner (voice)
John DiMaggio
as Colin Haggart / Volunteer #1 (voice)
Phil LaMarr
as Angus Haggart / Volunteer #2 (voice)
Sheena Easton
as Professor Fiona Pembrooke (voice)
