Don Messick: Scooby-Doo, Abdullah, Andrew Terra, Caley Burgess, Captain Cannaby, Clem Duncan, Cyrus Wheedly, Ghost of Captain Scavenger, Jack Canna, Lieutenant Pete Dugan, Matilda, Matt Hildago, Mr. Franklin, Mr. Sawyer, Mr. Van Henstone, Ngogi, Prince Abin, Professor Flakey, Rock festival businessman #2, Sebastian, Sergeant, Sheriff, Slats, Swampy Pete, The Duke of Strathmore, The Haunted Horseman, The Moat Monster