Jim Cummings

Harry Bottoms / Guy Kirk / Narrator (voice)

Glenn Morshower

General Washington / The President (voice)

Danny Mann

Jean-Paul Bidet / B-M Man (voice)

Steve Mackall

V.D. Johnson / Astronomer (voice)

Jeannie Elias

Sandy Mellons / Kid on Lava (voice)

Isaac C. Singleton, Jr.

Donkey Dixon (voice) (as Isaac Singleton Jr.)

Nikki Sixx

Self [Motley Crue] (voice)

Eli Roth

Lumberjack (voice)