Nibbler (voice) / Nibbler / Pygmy Hyena Moles (voice) / Raccoon / Plants (voice) / Tardigrades (voice) / Mountain Lion (voice)

Supporting Role

Monkey Rockwell (voice)

Scooby-Doo / Fred Jones (voice)

Dai Gui (voice) / Wire-Operated Samurai (voice) / Animals (voice) / Magister #3 (voice)

Supporting Role

Scooby-Doo (voice) / Boskov

Runt / Buttons (voice)

Fred Jones / Scooby-Doo (voice)

(voice)

Announcer (voice)

Mayor Stevenson / Weather Man (voice)

Mystery (voice) / Clamu / Baby Oyster (voice) / Gorilla (voice)

Bigtime Beagle / Baggy Beagle / Bubba the Caveduck (voice)

Krunk (voice) / Mr. Luzinski (voice) / Dog (voice) / Dynomutt / Dynomutt X90 (voice) / Monster (voice) / Dinosaur / Dog (voice) / President / General / Guy / God / Man #2 / Einstein (voice) / Monkey / Snorkdro (voice) / CM1129 (voice) / Mr. Luzinsky (voice) / Earl / Trucker #1 (voice) / Monkey / Turtle (voice) / Dogbot / Robot #1 / Robot #3 (voice) / Krunk / Dentist (voice) / Semitaur / Wizard / Chinese Dragon (voice) / Monkey / Captain (voice) / Lawnmower / Plant Monster (voice) / Monkey / Quakor (voice) / Announcer / Monkeys (voice) / Krunk / Minotaur / Cat (voice) / Teacher / Robot / JoJo (voice) / Monkey / Man #3 / Pilot (voice) / Monkey / Meteor / Tanner (voice) / Caveman / Bear (voice) / Mr. Lazinsky (voice) / Krunk / White Tiger (voice) / Mr. Lazinsky / Guy #3 (voice) / Teacher #2 / Principal (voice) / Monkey / Ref / Krunk (voice) / Monkey / Quackor / Mr. Luzinski (voice) / Krunk / Bee (voice) / Monkey (voice) / Krunk / Goat (voice) / Mr. Luzinsky / Trevor (voice) / Monster / Rock Monster / Dragon (voice) / Squirrel (voice) / Krunk / Monkey (voice) / Monkey / Krunk (voice) / Dog / Announcer / Vet (voice) / King Martian (voice) / Robot / Boy / Boy #2 (voice) / Monkey / Krunk / Monster (voice) / Monkey / Girl Monkey (voice) / Mr. Luzinsky / Smart Dad (voice) / Abe Lincoln / Mr. Luzinski (voice)

Tick-Tock the Crocodile (voice) / Billy the Squid (voice) / Fat Beetle / Barfly Bouncer / Ribbit (voice) / Robot Dogs (voice) / Todd / Plane Captain (voice)

Gus Goose / Butch the Bulldog / Lion / Lucifer (voice)

The Sluggard (voice) / Flugel / Frog (voice) / Zephyrs (voice) / Marquis de Bouillabaisse (voice) / Henchman / Horse / Cows (voice) / Griffin / Mervyns (voice) / Finwithit (voice) / Jabber (voice) / Guard Dog (voice) / Bobo (voice)

Megatron (voice)

Experiments (voice) / (voice) / Mr. Stenchy: Experiment 254 (voice) / Tanlined Ice Cream Tourist (voice) / Sparky (voice) / Skip (voice) / Sparky / Yin / Yang / Slushy / Kixx (voice) / Poxy (voice) / Kixx (voice)

Eek / Squeak / Archie (voice)

Wildey Pole / Additional Voices (voice) / Additional Voices (voice) / Buffy Vanderschmere (voice) / Wendell (voice) / Captain Hotspur (voice) / Pilot Jack / Gorilla-Birds (voice) / Red Robe Thug #2 / Scarabs (voice) / Brutis / Red Robe Thug #2 / Scarabs (voice) / Sparky / Maswich Village Mayor (voice) / Al / Creatures (voice) / Giant Condor (voice) / Dimple (voice) / Henry / Inkaras / Gator Policeman (voice)

Goddard / Special Vocal Effects (voice) / Goddard / Phantom #4 / Special Vocal Effects (voice) / Special Vocal Effects (voice) / Goddard / Tubbs / Special Vocal Effects (voice) / Goddard / Wendel / Special Vocal Effects (voice) / Goddard / Mr. Wuggles / Special Vocal Effects (voice) / Tubbs / Special Vocal Effects (voice) / Goddard / Second Guard / Special Vocal Effects (voice) / Goddard / Mr. Strych / Special Vocal Effects (voice) / Goddard / Tubbs / Father / Special Vocal Effects (voice) / Goddard / Tubbs / Health Inspector / Special Vocal Effects (voice)

Max (voice) (uncredited)

Fred Jones / Speed Buggy (voice) / Barney Rubble / Dino (voice)

Orbitty (voice)

Bo / Booker / Sheldon (voice)

George / Bill's Bunnies (voice)

Reeves (voice)

Sparky (voice) (uncredited)

Dexter's Computer / Monkey (voice) / Fred Jones / Cheese of the Future Narrator (voice)

Mox / Macqaque Wallah (voice)

Hefty Smurf (voice)

(voice)

Grandpa Mort (voice)

Cat / Troll (Voice)

Tooter Shelby/ Occy/ Grandpa Wetworth/ Great Snork Nork/ Finneus

Sonya (voice)

Grubs (voice) / Bat Creature / Slime Beast / Jessica / Stratoshrike (voice) / Brain Pod #39 (voice) / Narlzak / Strato-Shrike (voice) / Maw / Little Maw / Radio Announcer / Tangean Terrorists (voice) / Epoch (voice) / Grubs / Brain Pod (voice) / Brain Pod #26 / Grubs / Computer Voice (voice) / Additional Binipinardians (voice) / Pteradoc / Tarpax (voice) / Ranger (voice) / Senator (voice) / Brain Pod #17 (voice) / Bad Gargantians (voice) / Grub (voice) / Epoch / Senator / Phlegmex / Alien Guard (voice) / Ranger / Tentacled Alien (voice) / Shape / Creature (voice) / Dad (voice)

Tom / Jerry / McWolf (voice)

Fred Jones / Scooby-Doo / Baron Von Billfold (voice) / Fred / Scooby-Doo (voice)

Bushwoolie # 3 / Grundle (voice)

Animals' vocal effects (voice) (uncredited)

Mannequins / Beast (voice)

Special Vocal Effects (voice)

Assassimon (voice) (uncredited)