Gengo Kotaka
Tomoko Tomoe
Shosaku Takasugi
Machiko Shima
Kubota, Head of Children's Land
Fumio Sudo
Takashi Shima
Commander of Defense Forces
Priest
Fumio's Mother
Editor of Comics Magazine
Henchman (as Noritake Saito)
Henchman
Policeman
Gojira / Background Comic Editor / JSDF Officer
Gaigan (as Kengo Nakayama)
Angirasu / Laser Radar Operator
Kingugidora
Takeshi Shima / JSDF soldier (voice)
Kingugidora (archive footage)
Police Officer
Minira (archive footage)
Radon (archive footage)
Gorozaurusu / Angirasu / Gojira (archive footage)
Mosura (archive footage)
Fumio Sudo (voice) (uncredited)
Shosaku Takasugi / Editor of Comics Magazine / Police officer / Henchman (voice) (uncredited)
Kubota / Priest / Radio Announcer / Godzilla (voice) (uncredited)