Muttley (archive audio) (voice)
Scooby-Doo (voice) (archive footage)
(voice) (archive footage)
Scooby-Doo (voice) (archive footage)
Scooby-Doo (voice) (archive footage) (uncredited)
Scooby-Doo (voice)
Dr. Benton C. Quest
Hamton J. Pig / TV Executive (voice)
Bamm-Bamm Rubble / Joe Rockhead (voice)
Scooby Doo / Boo-Boo Bear (voice)
Boo Boo / Ranger Smith
Hamton J. Pig (voice)
Dr. Benton C. Quest / Bandit
Droopy (voice)
Hamton J. Pig / Radio Announcer (voice)
Romtu (Voice)
Boo-Boo Bear (voice)
Astro (voice)
Papa Smurf (voice)
Papa Smurf (voice)
Scooby-Doo / Ranger Smith / Boo-Boo Bear / Muttley / Bamm-Bamm Rubble / Papa Smurf
Scooby-Doo / Scrappy-Doo (voice)
Scooby-Doo / Scrappy-Doo (voice)
Papa Smurf / Chitter (voice)
Boo Boo / Ranger Smith
Scooby and Scrappy Doo (voice)
Astro / R.U.D.I / Mac / Announcer / Store Manager / Robot (voice)
Scavenger (voice)
Blunderpuff / Elf (voice)
Papa Smurf (voice)
Scooby-Doo / Scrappy-Doo (voice)
Papa Smurf / Scooby-Doo / Scrappy-Doo (voice)
(voice)
Papa Smurf / Azrael (voice)
Papa Smurf / Azrael the Cat (voice)
The Cat (voice)
Giles of the Treetops / Lo Tae Zhao
Boo Boo Bear / Ranger Smith / Pixie (voice)
Announcer (voice)
Boo Boo / Ranger Smith / Herman the Hermit (voice)
Doctor / Fish #1 / Fish #2 / Parrot / Pigasaurus (voice)
Bamm-Bamm Rubble
King Theoden / Easterling / The Mouth of Sauron (voice)
Humboldt (voice)
Scooby-Doo (voice)
Boo Boo (voice)
Snip (voice)
Igor (voice)
Sam Spangles (voice)
Abacus
Ed the Foreman / Otis (voice)
Balin/Troll #3/Goblin/Lord of the Eagles
Papa Bear / Rumpelstiltskin (voice)
Whiskers / Jonathan (voice)
Peter / Thor / Turkey
Jeffrey (voice)
Father (voice)
Boo Boo / Pixie / Atom Ant / So-So / Moby Dick / Touche' Turtle (voice)
Scooby-Doo / Professor Flakey (voice) (archive footage)
Announcer at Circus Circus (uncredited)
The Wizard/Robbing Hood
voice
Freddy the Flute / Googy Gopher / Orson Vulture (voice)
Harvey Kinkle (voice)
Sergeant Deux-Deux (voice)
Cat / Mice (voice) (uncredited)
Ali / Various Voices (voice)
Boo-Boo / Ranger John Smith / Ranger Jones (voice)
John Bear / Junior Bear (voice)
Musketeers / Duke (voice)
Watchdog (voice)
Sheepdog (voice)
Hunter / Dog (voice)
Mouse / Cat (voice)
Zookeeper / Gorilla / Storekeeper (voice)
1st Bird / Jack / Chick (voice)
Car Owner / Dr. Jekyll (voice)
Space Probe Administrator / Scuba Diver (voice)
The Prince (voice)
Zoo Guide / Zoo Visitor / Baby / Hunter / Chipmunk (voice)
Rabbit / Magic Mirror / Dwarfs / Prince Charming (voice)
Stork / Baby Gorilla / Driver (voice)
Bad Wolf #2 / Hansel (voice)
Customer / Burglar (voice)
Little Wolf (voice)
Pig #1 (voice)
Narrator - Pressure Cooker Blackout (voice) (uncredited)
