Simon Pegg
Neil
Pemeran
Kate Beckinsale
Catherine
Sanjeev Bhaskar
Ray
Rob Riggle
Grant
Robert Bathurst
James Cleverill
Suzy Eddie Izzard
Headmaster
Joanna Lumley
Fenella
Marianne Oldham
Rosie
Emma Pierson
Miss Pringle
Meera Syal
Fiona
Mojo
Dennis the Dog
Robin Williams
Dennis the Dog (voice)
John Cleese
Chief Alien (voice)
Terry Gilliam
Nasty Alien (voice)
Eric Idle
Salubrious Gat (voice)
Terry Jones
Scientist Alien (voice) / Van Driver
Michael Palin
Kindly Alien (voice)
James David Robinson
Steve
