Frank Welker

Figaro / Butch (voice)

Scooby-Doo / Fred Jones (voice)

Additional Voices (voice)

Scooby-Doo / Fred Jones / Monster (voice)

Tom / Jerry (voice) (uncredited)

Scooby-Doo / Fred Jones (voice)

George / Additional Voices (voice)

Scooby-Doo / Pterodactyl (voice)

George / Philippe (voice)

Cave of Wonders (voice)

Scooby-Doo / Fred Jones (voice)

Scooby-Doo / Fred Jones (voice)

Scooby-Doo / Fred Jones (voice)

Megatron (voice)

Azrael (voice)

Astro (voice)

Sven (voice)

Scooby-Doo / Fred Jones (voice)

Soundwave (voice)

Baby Dragon (voice)

Mochi (voice) (uncredited)

Fred Jones / Scooby-Doo (voice)

Galvatron (voice)

Scooby-Doo / Fred Jones (voice)

Fred Jones/ Scooby-Doo (voice)

Cat sounds (archive footage; uncredited)

Mayor Stevenson / Weather Man (voice)

Megatron (voice)

Fred Jones / Scooby-Doo (voice)

Odin (voice)

Mayor Stevenson (voice)

Scooby-Doo / Fred Jones / Dynomutt (voice)

Fred Jones / Scooby-Doo (voice)

Scooby-Doo / Fred Jones (voice)

Mayor Stevenson / Weather Man (voice)

Sonya (voice)

Mannequins / Beast (voice)

Azrael (voice)

Scooby-Doo / Fred Jones (voice) (archive footage)

Shockwave / Soundwave / Barricade (voice)

Bullseye (voice)

Soundwave (voice), Skyquake (voice), Megatron (voice)

Scooby-Doo (voice)

Bullseye / Buster / The Monkey / Pigeon (voice) (uncredited)

Dragon / Animals (voice) (uncredited)

Scooby-Doo / Fred Jones (voice)

Don Coyote / Dapple (voice)

Scooby-Doo (voice)

George / Duck / Cow (voice)

Momma Dino (voice) (uncredited)

Soundwave / Devastator / Reedman / Grindor (voice)

Nibbler (voice)

Animals' vocal effects (voice) (uncredited)

Baby Bird (voice)

Nibbler / Fleb / Seymour (voice)

Megatron

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

Iceman/Bobby Drake (voice)

Scooby-Doo / Fred (voice)

George, Bill's Bunnies (voice)

Monty Uno (voice)

Spindle / Frog / Caterpillar (voice)

Frank the combine (voice) (uncredited)

George (voice)

Furrball / Byron Basset (voice)

Fred Jones / Scooby-Doo (voice)

Fred / Scooby-Doo (voice)

Scooby-Doo / Fred / Wiki-Tiki / Interviewer (voice)

Cri-Kee (voice)

Additional Voices (voice)

Reinaldo Vocal Effects (voice)

Gameboy (voice)

Additional Voices (voice) (uncredited)

Darwin (voice)

Animal Vocal Effects (uncredited) (voice)

Nevins (voice)

Heckle & Jeckle / Quacula (voice)

Stinky / Elmo / Bloo's Owner (voice), Dino / Saber Tooth Cat (voice), Pudge (voice), Dino / Older Baby / Cat Siren (voice), President / General Guy / Man #2 / Einstein (voice)

Curly / Narrator / Ludwig Lillyput

Spike (voice)

Additional Voices (voice)

Caboose / Rot / Seymour (voice)

Jack's Vocal Effects

Circus Baboon / Security Guard (voice)

Fred Jones (voice) (archive footage)

Wakumee (voice), Fred Jones / Scooby-Doo (voice)

Creature Voices (voice)

Frank (voice), Additional Voices (voice), Roachie (voice), (voice), Monkey Ninjas (voice)

Lucifer / Bruno / Pom Pom (voice)

Nana II / Octopus (voice)

Primates (voice), Dumont as Gibbon (voice), Bibi (voice), Apes (voice), Manu (voice), Gorillas (voice), (voice)

Woof / Ace (voice)

Max the Dog (voice)

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

Packard (voice)

Magister #3 (voice), Wire-Operated Samurai (voice)

Petey (uncredited)

Max (voice)

Fred Jones (voice)

Bullseye / Buster (voice) ( uncredited)

Pegasus (voice) (archive sound)

Sabor (voice) (uncredited)

Nibbler (voice), Nibbler / Pygmy Hyena Moles (voice), Mountain Lion (voice), Tardigrades (voice)

Megatron (voice)

Spike / Monkeys / Scar Snout (voice) (uncredited)

Pegasus (voice)

Khan / Cri-Kee (voice)

Ayden (voice)

Phillippe / Sultan (voice)

Various Martians (voice)

Charles the Dog (voice)

Tickles (voice)

Assassimon (voice) (uncredited)

Special Vocal Effects (voice)

Grizzly Bear (voice)

Shao Kahn / Reptile (voice)

Special Vocal Effects (voice)

Furrball / Gogo Dodo / Byron Basset / Calamity Coyote / Little Beeper / Gremlin / Additional Voices (voice)

Bigfoot (voice)

The Devil/Station/Evil Easter Bunny (voice) (uncredited)

Velociraptor (voice)

Bubble Puppy (voice)

Alien Creature (voice)

Special Vocal Effects (voice)

Mastadge (voice)

Special Vocal Effects

Phurba (voice)

Additional Voices (voice)

Orbit / Veenie

Baby Oopsiy Daisy

Creatures (voice)

Special Vocal Effects (voice)

Brain / Dr. Claw / M.A.D. Cat / Santa Claus (voice)

Abu / Cave of Wonders / Rajah (voice)

Werewolf FX (voice), Isis (voice), Thug (voice)

Uncle Stinky Pig / Byron Basset / Furrball / Little Beeper / Gogo Dodo / Vinnie / Mac Duff / Additional Voices (voice)

Footstool (voice)

Eek / Squeak / Archie (voice)

Sharak / Kodo / Podo / Ruh (voice)

Bunny the Dog (voice)

Rahzar / Tokka (voice)

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

Additional Voices (voice)

Mohawk (voice)

(voice), Santa's Little Helper / various animals (voice)

Max (voice)

The Monster (voice)

Sharptooth (voice) (uncredited)

Crunch (voice)

Additional adult voices

Bo / Booker / Sheldon (voice)

Bigtime Beagle / Penguin Leader (voice)

Torch / Wild Bill (voice)

Special Vocal Effects (voice)

Dr. Phorbus

Ray Stantz (voice) / Slimer (voice)

Megatron / Soundwave / Rumble (voice)

Toby the Dog / Felicia the Cat (voice) (uncredited)

Special Vocal Effects

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

Stripe / Mogwai / Gremlins (voice)

Spock's Screams

Tom / Jerry / McWolf (voice)

Rock 'n Roll / Short-Fuse / Wild Bill / Timber (voice)

Fairy Godmother / Additional Voices

Special Vocal Effects (voice) (uncredited)

Doing (voice)

Fred Jones / Scooby-Doo (voice)

Jabberjaw

Magister #3 (voice), Dai Gui (voice), Animals (voice)

Toyman (voice), Marvin White (voice), Darkseid (voice)

Fred Jones (voice)

Orbitty (voice)

Scooby-Doo (voice)

McWolf / Dweeble / Wild Mouse / Grunch the Caveman (voice)