Jason Nesmith
Gwen DeMarco
Alexander Dane
Fred Kwan
Guy Fleegman
Tommy Webber
Mathesar
Sarris
Quellek
Laliari
Teb
Brandon
Kyle
Katelyn
Hollister
Young Tommy
Lathe
Neru (as Samuel Lloyd)
Fan #1
Fan #2
Fan #3
Fan #4 (as Brandon Michael de Paul)
Fan #5
Fan #6 (as Greg Colbrook)
Shy Girl
Teen in the Bathroom #1
Teen in the Bathroom #2
Excited Alien
Navigator
Technician #1
Technician #2
Nervous Tech
Lahnk
Teek (scenes deleted)
Brandon's Mom
Sarris' Guard
Reporter
Warrior Alien
Announcer (as Kevin Hamilton McDonald)
Alien Fan (as Daniel T. Parker)
Inventory Clerk
Voice of the Computer (voice)
Thermian Greeter #1 (as Lawrence Richards)
Thermian Greeter #2
Convention Goer (uncredited)
Security Guard (uncredited)
Mank'nar #1 in Prosthetics (uncredited)
Boy (uncredited)
Thermian Soldier (uncredited)
Convention Goth (uncredited)
Sci-Fi Convention Fan (uncredited)
Nerdy Convention Goer (uncredited)
Prostitute with Alien (uncredited)
Sarri's Guard (uncredited)
Sarris Soldier (uncredited)
Stagehand (uncredited)
Control Deck Thermian (uncredited)