Shaggy / Samuel Rogers / Shaggy Rogers (27 episodes, 1988-1991)
Scooby-Doo / Additional Voices / Mr. Boo / Newscaster / Reporter (27 episodes, 1988-1991)
Additional Voices (27 episodes, 1988-1991)
Daphne Blake (26 episodes, 1988-1991)
Fred / Fred Jones (25 episodes, 1988-1991)
Red Herring (23 episodes, 1988-1991)
Velma / Velma Dinkley (23 episodes, 1988-1991)
Additional Voices / Barbara Simone (15 episodes, 1988-1990)
Additional Voices / Mr. Dayton / Samurai Ghost (14 episodes, 1988-1991)
Additional Voices / Ghost of Buster McMuttmauler / Mr. Trixenstuff (14 episodes, 1988-1989)
Additional Voices / Ghost of Purvis Parker / Mr. Dilton (14 episodes, 1988-1989)
Additional Voices / Molly The Moll (13 episodes, 1988)
Additional Voices / Bobby Brainy / Prestina (13 episodes, 1988)
Additional Voices (13 episodes, 1988)
Additional Voices / Chef Pierre Goulash / Mr. Gordon (13 episodes, 1988)
Additional Voices / Al / Headless Skateboarder (13 episodes, 1988)
Additional Voices / Babysitter / Betsy Brainy / Mrs. Rogers / Sugie Rogers (13 episodes, 1988)
Additional Voices / Ms. Takai (13 episodes, 1988)
Mr. O'Greazy / Additional Voices / Gus / Bigwig / Crusty Baker / Dr. Croaker / Joey Jipner / Lenny Lipner / Purvis Parker / Wendell McWendel / Zombo the Clown (10 episodes, 1988-1991)
Additional Voices / Al Cabone / Bruce Wormsley / Dinkley 2000 / Higgins / Lenny Lipner / Mr. Conroy / Robopup / Skipper the dolphin / Station Manager / Uncle Eddie Jones (9 episodes, 1988-1991)
Boris Rougefort (3 episodes, 1988-1991)
Coolsville Comet / Ghost of the Hooded Heifer / Herbert Blaum / Larry P. Acme / The Cheese Monster (3 episodes, 1988-1990)
Boobeard / Boogedy Bones / Jack / Manny The Mauler / Stinkweed / Vincent Thorne (3 episodes, 1988)
(2 episodes, 1988-1991)
Selma (1 episode, 1988)
Warren (1 episode, 1988)
Police Chief (1 episode, 1988)
Constance McSnack (1 episode, 1988)
Additional Voices / Cashmore (1 episode, 1988)
Shirley McLoon (1 episode, 1988)
(1 episode, 1988)
Mr. Buckston / Sludge Monster (1 episode, 1988)
Buddy Chillner (1 episode, 1989)
Count Shockula (1 episode, 1989)
Paula P. Casso (1 episode, 1989)
(1 episode, 1989)
Morty Swindleson (1 episode, 1990)
Marty Swindleson (1 episode, 1990)
Nasty-Doo / Professor Digmi (1 episode, 1991)
Englebert Newton (1 episode, 1991)
Additional Voices (1 episode, 1991)
(1 episode, 1991)