Commander Jenkins
Walter
Self
Self
Jerry Johnson
Narrator (voice)
Mike McBride
Mike McBride
Mike McBride
Tomar-Re (voice)
Mike McBride
Mike McBride
Slasher (opening sequence) (uncredited)
2nd Lt. Robert 'Bob' Anderson
Self
Mike McBride
X-Ray Technician
Mike McBride
Capt. Stillman
Maltz
Self - Host
Self
Randall Carver
Função desconhecida
Gabriel Wozniak
Dan Fielding
Jay Reece
President James Stevens
Self
Older Alex
Self - Host
Gavin Firth
Jenkins / Galahad
Dr. Nigel Vaughn
Anthony Lewis
Bud McGrath
Self
Self
Donovan
Chef Gerard
