A prehistoric monster called Gigantis emerges alongside another creature named Angurus.
小泉博
as Tsukioka
若山セツ子
as Hidemi
千秋実
as Kobayashi (as Mindru Chiaki)
志村喬
as Dr. Yamane
清水将夫
as Dr. Tadokoro
恩田清二郎
as Commander (as Serjiro Onda)
二代目 澤村宗之助
as Shibeki
土屋嘉男
as Tajima
木匠マユリ
as Radio Operator
Yukio Kasama
as Father (as Yokio Kasama)
笈川武夫
as Police Chief
山田巳之助
as Chief of Civil Defense (uncredited)
