| Actor | Nick Adams (as Astronaut Glenn Amer), Akira Takarada (as Astronaut K. Fuji), Jun Tazaki (as Dr. Sakurai), Akira Kubo (as Tetsuo Teri), Yoshio Tsuchiya (as Controller of Planet X), Takamaru Sasaki (as Chairman of Earth Committee), Gen Shimizu (as Minister of Defense), Kenzô Tabu (as Commander from Planet X), Yoshifumi Tajima (as General), Nadao Kirino (as Military Aide), Kôji Uno (as Namikawa's Associate), Tôru Ibuki (as Xian), Kazuo Suzuki (as Xian), Haruo Nakajima (as Gojira), Masaki Shinohara (as Radon), Shôichi Hirose (as Kingu Gidora) |
