Josh Hutcherson
Walter Budwing
Acting
Jonah Bobo
Danny Budwing
Acting
Dax Shepard
Astronaut
Acting
Kristen Stewart
Lisa Budwing
Acting
Tim Robbins
Dad (Mr. Budwing)
Acting
Frank Oz
Robot (voice)
Acting
John Alexander
Robot
Acting
Derek Mears
Lead Zorgon
Acting
Douglas Tait
Zorgon
Acting
Joe Bucaro III
Zorgon
Crew
Jeff Wolfe
Zorgon
Acting