Edmond Halley / Robert Hooke (voice)
Brad Follmer
Denlinger
Maj. Cabot Forbes
Lord Arthur Holmwood
Carl Yankowski
Guy Fox (voice)
Brigadier Gubbins - 'M'
Pilot (voice)
Guilford Dudley
Fritz Arno Wagner
Jonas
Kent Gregory
Bishop Gyles
Michael Grable
Dr. Fritz Hippler
Nathan
James Harcourt
Dr. Stephen Metzner
The King
Myles
Sam Green (uncredited)
Dr. Lawrence Gordon
Stan's Doctor
Thomas Ince
Josef
Reigert
