Masahiro Matsuoka as Shin'ichi Ôzaki

Rei Kikukawa as Miyuki Otonashi

Don Frye as Captain Douglas Gordon

Maki Mizuno as Anna Otonashi

Kazuki Kitamura as The controller of Planet X

Kane Kosugi as Katsunori Kazama

Kumi Mizuno as Commander Akiko Namikawa

Akira Takarada as UN Secretary General Naotarô Daigo

Masatô Ibu as Xilian General

Masanobu Takashima as Major Kita

Shigeru Izumiya as Samon Taguchi

Jun Kunimura as Major Kumoro

Chihiro Ohtsuka as Shobijin

Masami Nagasawa as Shobijin

Masakatsu Funaki as Commander Kumasaka

Kenji Sahara as Hachiro Jinguji

Kenta Suga as Kenta Taguchi

Koichi Ueda as Original Gotengo Deputy Captain

Akira Nakao as Original Gotengo Commander

Tak Sakaguchi as Xilian

Reika Kirishima as Female Xilian

Tsutomu Kitagawa as Godzilla

Naoko Kamio as Minilla / Rodan

Kazuhiro Yoshida as Gigan / Hedorah

Toshihiro Ogura as Anguirus / Ebirah

Motokuni Nakagawa as Monster X / King Caesar

Ray Sefo as Glenn

Yoji Tanaka as (uncredited)

Shuya Yoshimoto as

Koichi Yamadera as Narrator (voice)

Wataru Shihôdô as Major Kita

Sam Arnold as Newscaster (Ben Riley) (uncredited)