Characters played by Nick Adams
Astronaut Glenn Amer
Characters played by Akira Takarada
Astronaut K. Fuji
Characters played by Jun Tazaki
Dr. Sakurai
Characters played by Akira Kubo
Tetsuo Teri
Characters played by Kumi Mizuno
Miss Namikawa
Characters played by Keiko Sawai
Haruno Fuji
Characters played by Yoshio Tsuchiya
Controller of Planet X
Characters played by Takamaru Sasaki
Chairman of Earth Committee
Characters played by Gen Shimizu
Minister of Defense
Characters played by Kenzô Tabu
Commander from Planet X
Characters played by Yoshifumi Tajima
General
Characters played by Nadao Kirino
Military Aide
Characters played by Kôji Uno
Namikawa's Associate
Characters played by Tôru Ibuki
Xian
Characters played by Kazuo Suzuki
Xian
Characters played by Fuyuki Murakami
Councilman
Characters played by Noriko Sengoku
Female Delegate
Characters played by Someshô Matsumoto
Buddhist Priest
Characters played by Kamayuki Tsubono
Councilman
Characters played by Toki Shiozawa
Minister
Characters played by Yasuhisa Tsutsumi
Official
Characters played by Rinsaku Ogata
Soldier
Characters played by Masaaki Tachibana
Scientist
Characters played by Yutaka Oka
Reporter
Characters played by Saburô Iketani
News Reader
Characters played by Yoshizo Tatake
Xian
Characters played by Mitsuo Tsuda
Soldier
Characters played by Hideki Furukawa
Xian
Characters played by Ryôji Shimizu
Xian
Characters played by Minoru Itô
Xian
Characters played by Takuzô Kumagai
Xian
Characters played by Tadashi Okabe
Reporter
Characters played by Haruo Nakajima
Gojira
Characters played by Masaki Shinohara
Radon
Characters played by Shôichi Hirose
Kingugidora
Characters played by Marvin Miller
Fuji
Characters played by Gorô Naya
Councilman
Characters played by Peter Fernandez
Tetsuo
Characters played by Bin Furuya
Planet X Alien
Characters played by Shigeo Katô
JSDF member
Characters played by Akio Kusama
Government Official
Characters played by Akira Wakamatsu
Xian
Characters played by Osman Yusuf
Restaurant patron