Don Messick
Announcer / Boo Boo Bear / Scooby-Doo / Mr. Creeply (voice)
Daws Butler
Snagglepuss / Yogi Bear / Quick Draw McGraw / Various (voice)
John Stephenson
Mildew Wolf / Dread Baron / Great Fondoo / Doggie Daddy (voice)
Casey Kasem
Shaggy Rogers (voice)
Scatman Crothers
Hong Kong Phooey (voice)
Frank Welker
Dynomutt / Jabberjaw / Magic Rabbit / Sooey Pig (voice)
Mel Blanc
Barney Rubble / Captain Caveman / Speed Buggy (voice)
Julie Bennett
Cindy Bear (voice)
Marilyn Schreffler
Brenda Chance / Daisy Mayhem (voice)
Vernee Watson
Dee Dee Skyes (voice)
Laurel Page
Heather North
(voices)
Alan Reed
Gary Owens
