When a rare species of butterfly is found in a mysterious valley in Japan, a pair of entomologists go to investigate and find more. They discover Varan, a giant monster, who decides to leave the valley and head straight for Tokyo.
Kenji Uozaki
Kōzō Nomura
Yuriko Shinjô
Ayumi Sonoda
Dr. Sugimoto
Koreya Senda
Dr. Fujimora, bomb expert
Akihiko Hirata
Dr. Majima, Sugimoto's aide
Fuyuki Murakami
Military Officer Katsumoto
Yoshio Tsuchiya
Secretary of Defense
Minosuke Yamada
Ichiro, Yuriko's brother
Hisaya Ito
Captain of Uranami
Yoshifumi Tajima
Yutaka Wada
Nadao Kirino
Village High Priest
Akira Sera
Military Officer Kusama
Akio Kusama
Ken's Mom
Noriko Honma
Issaku
Akira Yamada
Horiguchi
Fumindo Matsuo
Sōji Ubukata
Toku Ihara
Jiro
Yoshikazu Kawamata
Sankichi
Yasuhiro Shigenobu
Ken, the boy
Takashi Itô
Mitsuo Tsuda
(as Jirô Kumagai)
Takuzō Kumagai
Fisherman
Shōichi Hirose
Keisuke Yamada
Cameraman
Hideo Shibuya
Fisherman (as Kôji Suzuki)
Toshitsugu Suzuki
Masaki Shinohara
Michiko Kawa
(as Yasuo Ônishi)
Yasumasa Ônishi
Toshiko Nakano
Hiroshi Akitsu
Mitsuo Matsumoto
Toshiko Nomura
Rinsaku Ogata
Jun'ichirō Mukai
Satoko Taira
Eisuke Nakanishi
Takashi Narita
Keiichirō Katsumoto
Haruya Sakamoto
(as Ryûichi Hosokawa)
Yōichirō Kitagawa
Kô Hayami
Tokio Ôkawa
(as Tazue Ichimanji)
Tsurue Ichimanji
Hiroko Terasawa
Toriko Takahara
Varan
Katsumi Tezuka
Varan
Haruo Nakajima