Don Messick ( Don Messick )

Announcer / Boo Boo Bear / Scooby-Doo / Mr. Creeply (voice)

Daws Butler ( Daws Butler )

Snagglepuss / Yogi Bear / Quick Draw McGraw / Various (voice)

John Stephenson ( John Stephenson )

Mildew Wolf / Dread Baron / Great Fondoo / Doggie Daddy (voice)

Casey Kasem ( Casey Kasem )

Shaggy Rogers (voice)

Scatman Crothers ( Scatman Crothers )

Hong Kong Phooey (voice)

Frank Welker ( Frank Welker )

Dynomutt / Jabberjaw / Magic Rabbit / Sooey Pig (voice)

Mel Blanc ( Mel Blanc )

Barney Rubble / Captain Caveman / Speed Buggy (voice)

Julie Bennett ( Julie Bennett )

Cindy Bear (voice)

Marilyn Schreffler ( Marilyn Schreffler )

Brenda Chance / Daisy Mayhem (voice)

Vernee Watson-Johnson ( Vernee Watson-Johnson )

Dee Dee Skyes (voice)

Laurel Page ( Laurel Page )

Heather North ( Heather North )

(voices)

Alan Reed ( Alan Reed )

Gary Owens ( Gary Owens )

Bob Holt ( Bob Holt )

Joe Besser ( Joe Besser )

Doug Young ( Doug Young )

Julie McWhirter ( Julie McWhirter )

Ashley Johnson ( Ashley Johnson )