Kadro (15)
Keye LukeShigeru Kawamura / Sunagawa / Toji (voice)Aya OyamaKiyo / woman outside hospital / female honeymooner (voice)
George TakeiDr. Kyuichiro Kashiwagi / Izeki / male honeymooner (voice)
Paul FreesNishimura / Suda / Dr. Tanaka / Air Force officer / Kitahara (voice)
Marvin MillerAir Self-Defense Force commander / Air Force pilot / newsreader (voice)
James YagiOsaki / Professor Minami / hotel manager / farmer (voice)Jane ChangOtami (voice)David DuncanNarrator
Haruo NakajimaRodan / Meganulon (uncredited)
Kenji SaharaShigeru Kawamura
Yumi ShirakawaKiyo
Akihiko HirataDr. Kyuichiro Kashiwagi
Minosuke YamadaOsaki
Yoshibumi TajimaIzekiAkio KoboriNishimura