as Muttley (archive sound) (voice)
as Announcer at Circus Circus (uncredited)
as Gears (voice)
as The Cat (voice)
as (voice)
as Papa Bear / Rumpelstiltskin (voice)
as Roman Soldier (voice)
as Sam Spangles (voice)
as Snip (voice)
as Hans Van Ripper (voice)
as Giles of the Treetops / Lo Tae Zhao (voice)
as Papa Smurf / Scooby-Doo / Scrappy-Doo (voice)
as Boo Boo / Pixie / Atom Ant / So-So / Moby Dick / Touche' Turtle (voice)
as Freddy the Flute / Googy Gopher / Orson Vulture (voice)
as King Theoden / Easterling / The Mouth of Sauron (voice)
as Jeffrey (voice)
as Droopy (voice)
as Scooby-Doo (voice)
as Alarm (voice) (uncredited)
as Boo Boo / Mumbly (voice)
as Balin/Troll #3/Goblin/Lord of the Eagles (voice)
as Ratchet
as Peter / Thor / Turkey
as Boo Boo / Ranger Smith (voice)
as Astro (voice)
as Scooby-Doo / Scrappy-Doo (voice)
as Snorky / Scooby-Doo (voice)
as Whiskers / Jonathan (voice)
as Doctor / Fish #1 / Fish #2 / Parrot / Pigasaurus (voice)
as Boo Boo / Ranger Smith / Herman the Hermit (voice)
as Ed the Foreman / Otis (voice)
as Scooby-Doo (voice) (archive footage)
as Astro / R.U.D.I / Mac / Announcer / Store Manager / Robot (voice)
as Papa Smurf (voice)
as Papa Smurf / Chitter (voice)
as Bamm-Bamm Rubble / Joe Rockhead (voice)
as Boo Boo /Narrator (voice)
as (voice) (archive footage)
as Scooby Doo / Boo-Boo Bear (voice)
as Dr. Benton C. Quest / Bandit
as Romtu (Voice)
as Hamton J. Pig / Radio Announcer (voice)
as Cat / Mice (voice) (uncredited)
as Boo Boo (voice)
as Scooby-Doo / Professor Flakey (voice) (archive footage)
as Ali / Various Voices (voice)
as (archive footage)
as Papa Smurf (Voice)
as Boo Boo Bear / Ranger Smith / Pixie (voice)
as Gears / Ratchet (archive audio)
as Harvey Kinkle (voice)
as Pastry Cook / House Agent / Midget / Workman / Hero (voice)
as The Wizard/Robbing Hood
as Baby Bamm-Bamm/Lot Security Guard/Tour Bus Driver (voice)
as Louie / Itchy (voice)
as Hamton J. Pig / TV Executive (voice)
as Boo Boo / Ranger Smith
as Wolf / Rabbit / Sparrow (voice)
as Father (voice)
as Scooby-Doo (Voice)
as Scooby-Doo / Ranger Smith / Boo-Boo Bear / Muttley / Bamm-Bamm Rubble / Papa Smurf
as Dr. Benton C. Quest
as Igor (voice)
as Blunderpuff / Elf (voice)
as Boo-Boo / Ranger John Smith / Ranger Jones (voice)
as Papa Smurf / Azrael the Cat (voice)
as Scooby-Doo / Ghost (voice) (archive footage)
as Humboldt (voice)
as Narrator - Pressure Cooker Blackout (voice) (uncredited)
as Hamton J. Pig (voice)
as Papa Smurf / Azrael (voice)
as Additional Voices (voice)
as Scooby-Doo
as Bamm-Bamm Rubble
as Sergeant Deaux-Deaux (voice) (archive sound) (uncredited)
as Announcer (voice)
as Little Wolf (voice)
as Narrator / SSA Graduate / Sheepdog / Sheep
as voice
as Space Probe Administrator / Scuba Diver (voice)
as Robin Hood / Sheriff of Nottingdoing / Sheriff's Wife
as Hunter / Desmond Dog
as Scooby-Doo / Additional Voices (voice)
as Turtle / Buzzard / Wolf Hunter
as Car Owner / Dr. Jekyll (voice)
as Little Pig #1 / Little Pig # 2
as Musketeers / Duke (voice)
as Sergeant Deux-Deux (voice)
as Eddie / Farmer Smith
as Safari Hunter
as Watchdog (voice)
as John Bear / Junior Bear
as Boss / Rabbit / Police Sergeant
as Stork / Baby Gorilla / Driver (voice)
as Rabbit / Magic Mirror / Dwarfs / Prince Charming (voice)
as Woody
as John Bear / Junior Bear (voice)
as Doormouse
as Customer / Burglar (voice)
as Zoo Guide / Zoo Visitor / Baby / Hunter / Chipmunk (voice)
as Old MacDonald / Sheepdog / Sheep
as Pig #1 (voice) (uncredited)
as Farmer / Woofer
as Hunter / Dog (voice)
as Sheepdog (voice)
as Sheepdog / Sheep
as Zookeeper / Gorilla / Storekeeper (voice)
as Mouse / Cat (voice)
as Bad Wolf #2 / Hansel (voice)
as 1st Bird / Jack / Chick (voice)
as Dog / Chicken
as Sheepdog / Farmer / Sheep
as Atom Ant (voice) (archive footage)
as Rabbits / Bear
as The Prince (voice)
as Arnold (voice)
as Bank Teller (voice)
as Arnold / Doctor (voice)
as Bamm-Bamm Rubble (voice)
as Guy #2 / Emcee (voice)
as Robby / Alvin / 1st Photographer / Kid / Driver (voice)
as Stoneface (voice)
as Diner (voice)
as Sherman / Charney (voice)
as Arnold / Senior / Professor / Bronto / Bill (voice)
as Boo-Boo (voice)
as Junior (voice)
as Skinny / Bellhop / Cop / Ump / Catcher / Fan #1 (voice)
as Mr. Brickley (voice)
as Stoneheart / TV Announcer / Boy (voice)
as Kid / Co-Pilot (voice)
as Bamm-Bamm Rubble / Bird / Judge (voice)
as Dr. Boulder Dome (voice)
as Hot Dog Vendor / Doorman (voice)
as Bamm-Bamm Rubble / Arnold / News Reader (voice)
as Bamm-Bamm Rubble / Harvey (voice)
as Bamm-Bamm Rubble / Arnold / Rabbit (voice)
as Bamm-Bamm Rubble / Arnold (voice)
as Photographer (voice)
as Bamm-Bamm Rubble / Hoppy (voice)
as Bamm-Bamm Rubble / Hoppy / Turtle / Cat / Barking (voice)
as Bamm-Bamm Rubble / Hoppy / TV Announcer / Elf #2 (voice)
as Bamm-Bamm Rubble / Hoppy / Oscar (voice)
as Bamm-Bamm / Telegram Delivery Boy / Hoppy (voice)
as Bamm-Bamm Rubble / Mr. Rockroll (voice)
as Bamm-Bamm Rubble / Hoppy / Sam
as Scrooge's Father (voice)
as Hampton J. Pig (voice)
as Ratchet / Gears / Scavenger
as Carl Andrews (voice)
as Boo Boo Bear / Ranger Smith (voice)
as Gloop / Gleep
as Dr. Vernon Danger
as Scarecrow (voice)
as Beau / Narrator / Baseball Announcer / J.C. Crowflies
as Boarding Representative / Crook / Policeman / Passenger / Sailor
as Muttley / Klunk / Zilly (voice)
as Gravel Slag (voice)
as Pixie
as Eugene the Jeep (voice)
as Announcer / Boo Boo Bear / Scooby-Doo / Mr. Creeply (voice)
as Schleprock
as Astro / Gloop / Gleep (voice)
as Q*Dactyl (voice)
as Spot
as Sparerib/ Nobody/ Mr. Post/ Mr. Snyder
as Boo Boo Bear / Pixie (voice)
as Falcon 7 / Vapor Man (voice)
as Wally Wooster
as Atom Ant (voice)
as Precious Pupp / Shag Rugg (voice)
as Harvey Kinkle / Chilli Dog (voice)
as Chilli Dog (voice)
as Harvey Kinkle / Chilli Dog / Spencer (voice)
as Spencer / Chilli Dog (voice)
as Harvey Kinkle / Spencer (voice)
as Harvey Kinkle / Spencer / Chilli Dog (voice)
as Various (voice)
as Kaboobie
as Blip / Zorak (voice)
as Ruff (voice)
as So-So
as Sebastian the Cat (voice)
as Dr. Quest / Bandit (voice)
as Godzooky
as Ricochet Rabbit
as Muttley (voice)
as Bleep (voice)
as Aramis / King Louis XIV
as Hoppy / Bumbler
as Bad Luck Schleprock
as Boo Boo / Pixie / Muttley / Lucky the cat (voice)
as Scrambles/Fishtail (voice)
as Mumbly (voice)
as Crunch (Voice) / Commander Rondu (Voice)
as Sancho Panda (voice)
as Narrator
as Countdown
as Boo (voice)
as Rawhide Clyde (voice)
as Professor Carter (voice)
as Blip, Zorak (Voice)
as Clyde (voice)
as Astro
