Fumihiko Tachiki as Ryu the Horned Owl (G-5)

Kaneto Shiozawa as Berg Katse

Koji Ishii as Joe Asakura the Condor (G-2)

Masaya Onosaka as Ken Washio the Eagle (G-1)

Michiko Neya as Jun the Swan (G-3)

Rica Matsumoto as Jinpei the Swallow (G-4)

Ikuya Sawaki as Dr. Kōzaburō Nanbu

Nobuo Tanaka as Sosai X

Unsho Ishizuka as Red Impulse

Yonehiko Kitagawa as Anderson

Ai Orikasa as Berg Katse (female; ep 2)

Daisuke Gori as General Clintos (ep 2)

Hidekatsu Shibata as Soldier (ep 3)

Hirohiko Kakegawa as Count Losmandos (ep 2)/Giuseppe Asakura (ep 1)

Hisao Egawa as Submarine Captain (ep 2)

Isshin Chiba as Galactor (ep 1)/Operator (ep 3)/Submarine Operator (ep 2)

Junko Iwao as Jupiter Ninja (ep 2)

Kazuhiro Nakata as Galactor Commander (ep 1)

Koichi Tochika as Galactor (ep 3)

Koji Tsujitani as Alan (ep 2)

Kunihiko Yasui as Galactor (ep 3)

Masaharu Sato as Dr. Kirkland (ep 1)

Kyôko Terase as Caterina Asakura (ep 1)

Naoko Ishii as Stewardess (ep 1)

Ryuuzaburou Ootomo as Devil Snake Commander (ep 3)

Shigezo Sasaoka as Kerry Beoluke (ep 1)

Shin-ichiro Miki as Blackbird (eps 1-2)

Takashi Nagasako as UNF Operator (ep 2)

Takehito Koyasu as Dr. Kessler (ep 1)

Takeshi Aono as Dr. Donaldson (ep 2)

Tomohisa Aso as Doctor B (ep 1)

Tomomichi Nishimura as Secretary-General (ep 3)

Toshihiko Nakajima as Chairman Müllen (ep 2)

Unsho Ishizuka as Kentaro Washio

Yasunori Masutani as Galactor (ep 3)