Akira Kubo
as SY-3 Captain Katsuo Yamabe
Jun Tazaki
as Dr. Yoshido
Yoshio Tsuchiya
as Dr. Otani
Kyoko Ai
as Kilaak Queen
Yukiko Kobayashi
as Kyoko Yamabe
Kenji Sahara
as Commander Nishikawa
Andrew Hughes
as Dr. Stevenson
Nadao Kirino
as 1st Detective
Susumu Kurobe
as Kilaak Contolled Staffer
Hisaya Itô
as Major Tada
Yoshifumi Tajima
as General
Naoya Kusakawa
as SY-3 Astronaut
Ikio Sawamura
as Old Farmer
Kazuo Suzuki
as Kilaak Controlled Staffer
Yutaka Sada
as Police Officer