Thomas F. Wilson
Ed Klingbottom
Karim Prince
Roy Dubro
M. Emmet Walsh
Stanley
Brion James
Air Force
Wigald Boning
Dr. Strangemeister
Ben Stein
Men in Strangemeister's Head
George Kennedy
Army
Donna D'Errico
Press Secretary
Barry Bostwick
President Smith
Rodger Halston
Glaxxon
Don Stroud
Old Bob
John Bishop
G-Man
Patricia Elliott
Girl Scout Leader
Melissa Rivers
Female Reporter #1
Dave Fennoy
Glaxxon (voice)
Dee Bradley Baker
Subordinate Alien (voice)
Jennifer Coolidge
