Tadao Takashima as Tasumo Hatanaka

Yōko Fujiyama as Makoto Jinguji

Yū Fujiki as Yoshito Nishibe

Kenji Sahara as Uto Omino

Ken Uehara as Admiral Kosumi

Hiroshi Koizumi as Inspector

Jun Tazaki as Captain Hachiro Jinguji

Yoshifumi Tajima as Tome 'Amano' Amanoshome

Akihiko Hirata as Mu Agent #23

Hideyo Amamoto as High Priest of Mu

Susumu Fujita as Defense Commander

Minoru Takada as Government Official

Hisaya Ito as Shindo

Ikio Sawamura as Taxi Driver

Tetsuko Kobayashi as Empress of Mu

Akemi Kita as Rimako - Sneezing Model

Hiroshi Hasegawa as Liuetenant Fuji

Nadao Kirino as Kidnapped Scientist

Shin Ōtomo as Government Official

Haruya Sakamoto as Sergeant Yamada

Tetsu Nakamura as Warship Captain

Yutaka Nakayama as Sailor

Mitsuo Tsuda as Defense Agency Executive B

Kôji Uno as Police Officer

Sadako Amemiya as Memoko - Girl in Susumu's studio

Rinsaku Ogata as

Hideo Ôtsuka as

Yutaka Oka as Man of Bus

Yukihiko Gondō as Military Henchman

Shōichi Hirose as Mu Henchman

Katsumi Tezuka as Mu Henchman

Takuzō Kumagai as (as Jirô Kumagai)

Yasuzō Ogawa as Mu Henchman Beside High Priest of Mu

Shirō Tsuchiya as Senior Officer

Wataru Ōmae as Police Officer

Osman Yusuf as Mu Submarine Crewman

Toshio Miura as

Masayoshi Kawabe as

Hiroshi Akitsu as

Hideo Shibuya as

Keisuke Yamada as

Shinjirô Hirota as

Keisuke Yamaji as

Kuniyoshi Kashima as

Hal Archer as Detective Ito (voice)

Sanjay Mamohan Berry as One of Mu Imperials

Bin Furuya as JSDF member

Kazuo Hinata as Defense Agency Executive

Eisaburo Komatsu as Sergeant Goten Kenbutai

Akio Kusama as Todoroki Takashi, Ken Taketai officersI

Keiji Sakakida as Mt. Mihara Climber

Kamayuki Tsubono as

Enver Altenbay as Minor Role (uncredited)

Ralph Jesser as One of Mu Imperials (uncredited)

Haruo Nakajima as Mu Empire man / Self Defense Forces exec