This article is about a/an show in the Tokusatsu Super Hero subgenre.
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D17 title
Daitetsujin 17
Number of episodes: 35
First episode:
Original airing: March 18, 1977 - November 11, 1977

Daitetsujin 17 (大鉄人17 Daitetsujin Wan-Sebun?) is a 1977 tokusatsu series created by Shotaro Ishinomori and produced by Toei. It revolves around a giant battle robot commanded by a young boy who fights the giant robots of an evil organization bent on world conquest. It is similar to Giant Robo (show) in premise and how it ends.

Several episodes were edited into a TV movie shown in the United States under different titles, including The Defenders and the Great Brain and Brain 17.

The opening theme was performed by Ichirou MizukiKoorogi '73 and The Chirps.

Popy manufactured several toys based on the series - notably a transforming Chogokin version of the robot One-Seven (later released in America for the Godaikin line), vehicles based on One-Seven's Flying Fortress mode, the Sub Machine Flying Car, the Shigcon Tank and the Shigcon Jet, and a three-inch version of One-Seven, which was later released as "17" in Mattel's Shogun Warriors line.


Brain is the world's greatest computer, and also the most intelligent being on planet Earth. One day, Brain decides to abandon its terrestrial moorings, and it's up to The Defenders to track it down. Unfortunately, Brain has developed an amazing army of deadly giant robots, including one with a huge "17" emblazoned on its chest-plate, with which it plans to subjugate its creators. A young boy whose family was killed by Brain's followers manages to activate Daitetsujin 17, which thereafter comes to his rescue whenever he is in danger from Brain's minions.


Daitetsujin 17

Daitetsujin 17

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  • This is Shotaro Ishinoimori's only work involving the Japanese Super Robot genre.
  • This series is seen as an homage to the works of Mitsuteru Yokoyama, creator of Giant Robo and Tetsujin-28 and the father of the Mecha/Super Robot genre.
  • The number 17 means One Seven not Seventeen as the numbers 1 and 7 are meant to be read seperately instead of together.
  • In the 75th anniversary Shotaro Ishinomori Art Book, a concept sketch of the robot shows that is was originally called M-17.
    M One Seven Concept

    M One Seven concept sketch.


Both of the main characters in the series, Daitetsujin 17 is used to inspire the robot Space Ironman Ultimate Form XVIIIcon-crosswiki meanwhile Brain was used to inspire the robot's AI Brain from Kamen Rider Fourze the Movie: Everyone, Space is Here!Icon-crosswiki.


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