Astronomer Shinichi Tachibana has a secret identity as the superhero "Iron Sharp" and is well beloved by children. When they are attacked by a group of metallic aliens, Iron Sharp drives the aliens away. The resourceful Tachibana helps develop an electric barrier to block the aliens from coming to the Earth. After several losses by the aliens, they announce that they will invade the Earth, throwing the world into a state of panic.
Sonny Chiba
Shinjirō Ehara
Ryuko Mizukami
Mitsue Komiya
Seiichirō Kameishi
Shiro Okamoto
Rinichi Yamamoto
Kappei Matsumoto
Takashi Kanda
Ken Sudo
Junji Masuda
Koji Sahara
Harold Conway
Yuji Kitamine
Tadashi Minamikawa
Kōji Sekiyama
Gōzō Sōma
Akikane Sawa
Masazumi Okabe
Shirō Ōki
Jo Moriya
Kosaku Okano
Kenji Todoroki
Kenji Miyako
Akira Katayama