
"The great fierce battle between Godzilla, Rodan, and King Ghidorah that will sway the ruler of the Universe, Planet X!"
Astronauts Glenn and Fuji investigate Planet X and encounter mysterious aliens known as the Xiliens, who ask Earth's people to help save their world from "Monster Zero". In exchange for borrowing Godzilla and Rodan, the Xiliens offer a cure for cancer. As Glenn investigates, he develops a romance with Miss Namikawa and uncovers the Xilien's true intentions.
Astronaut F. Glenn

Astronaut K. Fuji

Haruno Fuji

Miss Namikawa

Dr. Sakurai

Tetsuo Teri

Controller of Planet X

Chairman of Earth Committee

Minister of Defense

Commander from Planet X

General

Godzilla

Rodan
King Ghidorah

Astronaut F. Glenn (voice)

Tetsuo's Mother

Military Aide

Namikawa's Associate
Xian

Xian

Councilman

Female Delegate

Buddhist Priest
Councilman
Official

Scientist

Scientist
Reporter
News Reader
Xian
Xian
Xian
Xian
Xian

Reporter

Xian