Joji Atsumi
Etsuko Shiraishi
Hiroko Iwamoto
Ryoichi Shiraishi
Dr. Tanjiro Adachi
Gen. Morita
Capt. Seki
Cmdr. Sugimoto
Dr. Nobu Kawanami
Leader of the Mysterians
Hamamoto - Secretary of Defense
Dr. Koda
Person at Board Meeting
Announcer on TV
Doomed Villager
Dr. DeGracia
Police Capt. Miyamoto
Gen. Emoto
Etsuko's mother
Dr. Noda
Defense Representative at meeting
Adachi's Assistant Hayami
Kawada - Policeman
Col. Ito (as Jirô Kumagai)
Togawa - Chief of Police Station
Detective in Etsuko's House
1st Lt. Yamamoto
Person at Defense Meeting / Policeman on phone
Ogata - Policeman
Dr. Svenson (as Jôji Fânesu)
General - American Version)
Moguera
Mysterian
UFO Witness
Foreign Reporter
Villager / Scientist / Reporter / Mysterians Executive / Self-Defense Force member
Cameraman
Defense Force Executive
Reporter
Defense Force Member
Science Scholar / Refugee / Self-Defense Force Member
The Mysterian
Reporter (uncredited)
Policeman (uncredited)
No. 2 Elevator Crew Member (uncredited)
Detective (uncredited)
Newspaper Reporter (uncredited)
Detective in Etsuko's House (uncredited)
Journalist (uncredited)