96 minutos
Astronauts Glenn and Fuji investigate Planet X and encounter mysterious aliens known as the Xiliens, who ask Earth's people to help save their world from "Monster Zero". In exchange for borrowing Godzilla and Rodan, the Xiliens offer a cure for cancer. As Glenn investigates, he develops a romance with Miss Namikawa and uncovers the Xilien's true intentions.
Akira Takarada
Astronaut Kazuo Fuji
Nick Adams
Astronaut F. Glenn
Kumi Mizuno
Miss Namikawa
Keiko Sawai
Haruno Fuji
Jun Tazaki
Dr. Sakurai
Yoshio Tsuchiya
Controller of Planet X
Akira Kubo
Tetsuo Torii
Takamaru Sasaki
Chairman of Earth Committee
Fuyuki Murakami
Medical Representative
Yoshibumi Tajima
Mobile Commander
Kenzō Tabu
President of World Education Corporation (Xilien)
Noriko Sengoku
Delegate
Someshō Matsumoto
Buddhist Representative
Gen Shimizu
Minister of Defense
Tōru Ibuki
Earth Base Xilien
Kazuo Suzuki
Earth Base Xilien
Yasuhisa Tsutsumi
Captain of First Survey Corps
Nadao Kirino
Captain of Second Survey Corps
Toki Shiozawa
Tetsuo's Mother
Mitsuo Tsuda
JSDF Soldier / Xilien
Takuzō Kumagai
JSDF Soldier / Xilien
Kôji Uno
Namikawa's Associate (Earth Base Xilien)
Masaaki Tachibana
Scientist
Yutaka Oka
Reporter
Rinsaku Ogata
JSDF Soldier
Tadashi Okabe
World Space Agency Staff
Ryôji Shimizu
World Space Agency Staff
Hideki Furukawa
World Space Agency Staff
Kamayuki Tsubono
Reporter
Minoru Itō
Reporter / Xilien
Haruo Nakajima
Godzilla
Masaki Shinohara
Rodan
Shōichi Hirose
King Ghidorah
Gorō Naya
Astronaut F. Glenn (voice)
Saburô Iketani
News Announcer (uncredited)
Yoshizo Tatake
Xilien (uncredited)
Yoshio Katsube
World Education Corporation Member (Earth Base Xilien) (uncredited)
Akira Wakamatsu
World Education Corporation Member (Earth Base Xilien) (uncredited)
Haruya Sakamoto
JSDF Soldier (uncredited)
