Yōsuke Natsuki
Role: Detective Shindo
Yuriko Hoshi
Role: Naoko Shindo
Hiroshi Koizumi
Role: Professor Murai
Takashi Shimura
Role: Dr. Tsukamoto
Akiko Wakabayashi
Role: Princess Maas Doulina Salno of Selgina
Hisaya Itō
Role: Chief Assassin Malmess
Akihiko Hirata
Role: Chief Detective Okita
Minoru Takada
Role: Prime Minister (uncredited)
Someshō Matsumoto
Role: Alien Expert (uncredited)
Ikio Sawamura
Role: Honest Fisherman (uncredited)
Kōzō Nomura
Role: Geologist (uncredited)
Kenji Sahara
Role: Editor in Chief Kanamaki
Susumu Kurobe
Role: Assassin with Mustache (uncredited)
Tōru Ibuki
Role: Short-Tie Assassin (uncredited)
Kazuo Suzuki
Role: Door-Opener Assassin (uncredited)
Haruya Katō
Role: Journalist (uncredited)
Shin Ōtomo
Role: Boss of Assassins (uncredited)
Senkichi Ōmura
Role: Would-Be Hat Retriever (uncredited)
Yutaka Nakayama
Role: Tourist with Lost Hat (uncredited)
Heihachirō Ōkawa
Role: Astronomer (uncredited)
Hideyo Amamoto
Role: Princess Salno's aide (uncredited)
Yoshio Kosugi
Role: Chief of Infant Island (uncredited)
Yoshibumi Tajima
Role: Ship Captain (uncredited)
Yutaka Oka
Role: Meteoritic (uncredited)
Kôji Uno
Role: Hotel Clerk (uncredited)
Shigeki Ishida
Role: Man in Crowd (uncredited)
Toshihiko Furuta
Role: Villager (uncredited)
Kotaro Tomita
Role: Villager (uncredited)
Ichiya Aozora
Role: Self / TV Host (uncredited)
Senya Aozora
Role: Self / TV Host (uncredited)
Yuriko Hanabusa
Role: Mother Shindo (uncredited)
Hideo Shibuya
Role: Journalist (uncredited)
Haruo Nakajima
Role: Godzilla (uncredited)
Shōichi Hirose
Role: King Ghidorah (uncredited)
Masaki Shinohara
Role: Rodan (uncredited)
Kōji Uruki
Role: Rodan (uncredited)
