Don Messick

as Gears / Ratchet (archive audio)

as Muttley (archive sound) (voice)

as Scooby-Doo / Ghost (voice) (archive footage)

as Scooby-Doo (voice)

as Scooby-Doo (voice) (archive footage)

as Scooby-Doo (voice) (archive footage)

as Scooby-Doo (voice)

as Scooby-Doo (voice)

as Additional Voices (voice)

as Scooby-Doo (voice) (archive footage)

as Scooby-Doo / Professor Flakey (voice) (archive footage)

as Scooby-Doo (voice) (archive footage)

as Scooby-Doo (voice) (archive footage)

as Scooby-Doo (voice)

as Scooby-Doo / Additional Voices (voice)

as Hamton J. Pig / TV Executive (voice)

as Scooby Doo / Boo-Boo Bear (voice)

as Hamton J. Pig (voice)

as Bamm-Bamm Rubble / Joe Rockhead (voice)

as Dr. Benton C. Quest / Bandit

as (voice)

as Baby Bamm-Bamm/Lot Security Guard/Tour Bus Driver (voice)

as Hamton J. Pig / Radio Announcer (voice)

as Romtu (Voice)

as Boo-Boo Bear (voice)

as Papa Smurf (voice)

as Astro (voice)

as Scooby-Doo / Scrappy-Doo (voice)

as Boo Boo /Narrator (voice)

as Scooby-Doo / Scrappy-Doo (voice)

as Papa Smurf / Chitter (voice)

as Boo Boo / Mumbly (voice)

as Astro / R.U.D.I / Mac / Announcer / Store Manager / Robot (voice)

as Scooby-Doo

as Boo Boo / Ranger Smith

as Gears (voice)

as Papa Smurf (voice)

as Louie / Itchy (voice)

as Blunderpuff / Elf (voice)

as Scooby-Doo / Scrappy-Doo (voice)

as Papa Smurf / Azrael (voice)

as Papa Smurf / Azrael (voice)

as The Cat (voice)

as Giles of the Treetops / Lo Tae Zhao (voice)

as Papa Smurf (Voice)

as Announcer (voice)

as Bamm-Bamm Rubble

as Scooby-Doo (voice)

as —

as Snorky / Scooby-Doo (voice)

as Scooby-Doo (voice)

as Scooby-Doo (Voice)