Astronaut Glenn

Nick Adams

Astronaut K. Fuji

Akira Takarada

Kumi Mizuno

Dr. Sakurai

Jun Tazaki

Haruno Fuji

Keiko Sawai

Controller of Planet X

Yoshio Tsuchiya

Tetsuo Teri

Akira Kubo

Councilman

Gorô Naya

Chairman of Earth Committee

Takamaru Sasaki

Female Delegate

Noriko Sengoku

Medical Representative

Fuyuki Murakami

Minister of Defense

Gen Shimizu

Mobile Commander

Yoshifumi Tajima

President of World Education Corporation (Xilien)

Kenzō Tabu

Earth Base Xilien

Toru Ibuki

Earth Base Xilien

Kazuo Suzuki

Military Aide

Nadao Kirino

Buddhist Representative

Someshō Matsumoto

Godzilla

Haruo Nakajima

Rodan

Masaki Shinohara

King Ghidorah

Shôichi Hirose

Tetsuo's Mother

Toki Shiozawa

Koji Uno

Captain of First Survey Corps

Yasuhisa Tsutsumi

Namikawa's Associate (Earth Base Xilien)

Kôji Uno

Masashi Shinohara

JSDF Soldier / Xilien

Mitsuo Tsuda

JSDF Soldier / Xilien

Takuzō Kumagai

Scientist

Masaaki Tachibana

Reporter

Yutaka Oka

Councilman

Kamayuki Tsubono

JSDF Soldier

Rinsaku Ogata

World Space Agency Staff

Tadashi Okabe

World Space Agency Staff

Ryôji Shimizu

World Space Agency Staff

Hideki Furukawa

News Announcer (uncredited)

Saburô Iketani

Reporter / Xilien

Minoru Itō

Xilien (uncredited)

Yoshizo Tatake

World Education Corporation Member (Earth Base Xilien) (uncredited)

Yoshio Katsube

World Education Corporation Member (Earth Base Xilien) (uncredited)

Akira Wakamatsu

JSDF Soldier (uncredited)

Haruya Sakamoto