Hiroshi Ishikawa as Gengo Odaka

Tomoko Umeda as Machiko Shima

Yuriko Hishimi as Tomoko Tomoe

Minoru Takashima as Shosaku Takasugi

Zan Fujita as Fumio Sudo

Toshiaki Nishizawa as Kubota, Head of Children's Land

Kunio Murai as Takeshi Shima

Gen Shimizu as Commander of Defense Forces

Kuniko Ashihara as Fumio's Mother

Zeko Nakamura as Priest

Shosei Muto as

Naoya Kusakawa as Policeman

Wataru Ōmae as Henchman

Hiroto Kimura as Henchman

Sadao Watanabe as Henchman

Akira Nishikawa as Henchman

Noritake Saito as Henchman

Haruo Nakajima as Godzilla / JSDF Officer / Background Comic Editor

Kôetsu Ômiya as Anguirus / JSDF Radar Operator

Kanta Ina as King Ghidorah

Kenpachirō Satsuma as Gigan (as Kengo Nakayama)