- Yosuke Natsuki
- Detective Shindo
- Yuriko Hoshi
- Naoko Shindo
- Hiroshi Koizumi
- Professor Miura
- Takashi Shimura
- Dr. Tsukamoto
- Emi Ito
- Shobijin (Twin Fairy)
- Yumi Ito
- Shobijin (Twin Fairy)
- Akiko Wakabayashi
- Mas Selina Salno, Princess of Sergina
- Hisaya Itô
- Malmess, Chief Assassin
- Susumu Kurobe
- Moustachoied Assassin
- Akihiko Hirata
- Chief Detective Okita
- Kenji Sahara
- Editor in Chief Kanamaki
- Toru Ibuki
- Short-Tie Assassin
- Yoshifumi Tajima
- Heedless Ship Captain
- Ikio Sawamura
- Honest Fisherman
- Senkichi Omura
- Would-Be Hat Retriever
- Somesho Matsumoto
- Alien Expert
- Shoichi Hirose
- Kingugidora
- Haruo Nakajima
- Gojira
- Toshihiko Furuta
- Villager
- Shigeki Ishida
- Guy in Crowd
- Haruya Kato
- Journalist
- Yoshio Kosugi
- Chief of Infant Island
- Yutaka Nakayama
- Tourist with Lost Hat
- Kozo Nomura
- Geologist
- Yutaka Oka
- Meteorite Scientist
- Heihachirô Ôkawa
- Astronomer
- Shin Otomo
- Boss of Assassins
- Kazuo Suzuki
- Showoff Door-Opener Assassin
- Minoru Takada
- Prime Minister
- Ishirô Honda
- Director
- Shin'ichi Sekizawa
- Writer
- Tomoyuki Tanaka
- Executive Producer, Producer
- Hajime Koizumi
- Cinematographer
- Ryôhei Fujii
- Film Editing
- Akira Ifukube
- Original Music
- Takeo Kita
- Art Director, Production Design
