Frank Welker
Suchi / Juliette / Pandeo / Seal (voice), Suchi / Leopard / Thylacine / Magpie / Grizzly (voice), Suchi / Dogs / Bad Breeder (voice), Suchi / Ganesha (voice), Dokey / Hippo / Elephant / Wildebeast (voice), Dokey / Chipmunk / Owl / Hatchling / Bear (voice), Factory Worker (voice), Suchi / Manatee / Seagull (voice), Dokey / Pinehead (voice), Suchi / Dolphins (voice), Suchi / Gila / Frogs (voice), Suchi / Senor Guzman / Policeman (voice)
Maurice LaMarche
Verminous Skumm (voice), Duke Nukem / Verminous Skumm (voice)
Richard Gautier
Oakey (voice), Misc. Fans and Boaters (voice)
Charlie Adler
Stalker Slaughter (voice), Thylacine / Newt (voice), Stalker / Clawed (voice)
Jeff Bennett
Misc. Fans and Boaters (voice)
Page Leong
Madame Mao (voice), Chi (voice)
Jim Cummings
Rancher / Columbus (voice), Sly Sludge (voice)
Tonyo Meléndez
Paolo / Tico (voice), Resort Manager / Policeman (voice)
Dorian Harewood
Chike (voice), Timberwolf / Elephant (voice)