Shigeru Kawamura
Kiyo
Professor Kyuichiro Kashiwagi
Mining Chief Osaki
Izeki
Police Chief Nishimura
Staff Officer Takeuchi
Sunagawa
Military officer
Goro
Chief of Police
Haru
Tsunesan
Suteyan
Osumi
Yoshizo
Sabu
Tahei
Senkichi
Dr. Minakami (uncredited)
Professor Minami (uncredited)
Professor Isokawa (uncredited)
Policeman Tashiro (uncredited)
Imamura, F-86F pilot (uncredited)
Kitahara, F-86F pilot (uncredited)
F-86F pilot (uncredited)
Rodan / Meganulon / Hotel Manager
Rodan / Meganulon
Meganulon / Fighter pilot
Sunagawa's colleague (uncredited)
Female Honeymooner (uncredited)
Coroner (uncredited)
Kiyo's neighbor (uncredited)
News Reader (uncredited)
Nurse (uncredited)
Laborer (uncredited)
Coal mine employee (uncredited)
Policeman at crime laboratory (uncredited)
Okinawan correspondent (uncredited)
Policeman (uncredited)
Journalist (uncredited)
Reporter (uncredited)
Radio operator on jeep (uncredited)
Soldier in jeep (uncredited)
Meganulon (uncredited)
Nakagawa, male honeymooner