Super Giant
Toshiko / Sister
Father
Okamoto / Detective
Reiko Okamoto / Okamoto's Sister,High School Girl
Masao / Boy with Hat
Yoshiko / Little Girl
Hiroshi / Kidnaped Boy
Atom AB Leader
The Man in Cage
Detective B
Kaoru
Detective A (as Kotaro Sugiyama)
The Member of Atom AB
M6 (Atom AB) (uncredited)