Super Giant / Starman
Toshiko / Sister
(credit only)
Detective Okamoto
Chief of Metropolitan Police (as Kan Hayashi)
Father
(as Chisako Tahara)
Reiko - Okamoto's Sister
Vice-Head of Atom AB
Member of Atom AB (as Johji Ohara)
Member of Atom AB
Man in Cage
Masao - Boy with Hat
Yoshiko - the Little Girl
Hiroshi - the Kidnapped Boy