Yukiko Kobayashi
Kyoko Manabe
Yoshio Tsuchiya
Dr. Otani
Yoshifumi Tajima
General (uncredited)
Kenji Sahara
Commander Nishikawa
Heihachirō Ōkawa
Engineer (uncredited)
Andrew Hughes
Dr. Stevenson
Ikio Sawamura
Old Farmer (uncredited)
Yoshio Katsuda
Young Scientist (uncredited)
Yutaka Sada
Police Officer (uncredited)
Hiroshi Okada
Hospital Doctor (uncredited)
Hideo Shibuya
1st Reporter (uncredited)
Nadao Kirino
1st Detective (uncredited)
Yutaka Oka
2nd Detective (uncredited)
Kamayuki Tsubono
3rd Detective (uncredited)
Seishirô Kuno
SY-3 Engineer (uncredited)
Ken'ichirô Maruyama
Moon Base Employee (uncredited)
Kenzo Echigo
SY-3 Engineer (uncredited)
Wataru Ômae
SY-3 Astronaut (uncredited)
Naoya Kusakawa
SY-3 Astronaut (uncredited)
Kazuo Suzuki
Kilaak Controlled Staffer (uncredited)
Tôru Ibuki
Kilaak Controlled Staffer (uncredited)
Susumu Kurobe
Kilaak Controlled Staffer (uncredited)
Minoru Itô
Kilaak Controlled Staffer (uncredited)
Rinsaku Ogata
1st Officer (uncredited)
Haruya Sakamoto
2nd Officer (uncredited)
Yukihiko Gondô
Soldier (uncredited)
Rei Maki
Kilaak (uncredited)
Masaaki Tachibana
Officer Announcing Monsters' Arrival (uncredited)
Saburô Iketani
News Reader (uncredited)
Atsuko Takahashi
Kilaak (uncredited)
Yoshio Miyata
Kilaak (uncredited)
Ari Segawa
Kilaak (uncredited)
Kyoko Mori
Kilaak (uncredited)
Midori Uchiyama
Kilaak (uncredited)
Wakako Tanabe
Kilaak (uncredited)
Michiko Ishii
Kilaak (uncredited)
Haruo Nakajima
Godzilla/Military Advisor
Susumu Utsumi
King Ghidorah
'Little Man' Machan
Minya