Jordan Hayes
Henry Taylor
Brad Lund
Dr. Francis Dulmacher
Tad Whitney
Nathan
Narrator (voice)
President Richard Adar
Wernher von Braun
Ted Brockhart
Major Mackie
Sir Reginald Hargreeves
Ray Mercer
George Guber
Charles Carver
Admiral Kimmel
Selinger
Greco
Anton Pascola
Alex Dent / Billy Frazer
King Laufey
Giuliano Della Rovere
Donald Menken
Randall Flynn