© 2026 The Couch Critic
Status
Released
Release
2007
Runtime
25m
"Witness The Unspeakable! Billy and Mandy Encounter The Space Invaders"
Alien werewolves from the Moon attack Earth and steal all the cheese. It's up to Mandy, Grim, Billy, and Sperg to stop the alien ploy.
11 Cast Members
Grey DeLisle
Mandy / Castigator (voice)
Greg Eagles
Grim / Sperg (voice)
Richard Steven Horvitz
Billy / Billy's Dad (voice)
Vanessa Marshall
Irwin / Mouse (voice)
Dee Bradley Baker
Alien Moonbeast / Alien Werewolf / Moonthing (voice)
Jeff Bennett
Alien #1 / Rat (voice)
Chris Cox
Meadowberry / Corporal / Postal Slob (voice)
Jennifer Hale
Billy's Mom / Stinky (voice)
Tom Kenny
Dr. Brainiac / Alien Pilot / Wiggly / Waiter (voice)
Mr. Lawrence
Alien #2 (voice)
Julian Stone
Sir Raven (voice)
