Groizer X

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Groizer X
(Guroizā X)
Genre Mecha
Anime television series
Directed by Hiroshi Taisenji
Written by Go Nagai
Studio Knack Productions, Dynamic Productions
Original network Tokyo Channel 12
Original run July 1, 1976March 31, 1977
Episodes 36
Written by Go Nagai
Illustrated by Shigeru Akimoto, Gosaku Ota
Published by Shogakukan
Demographic Children
Magazine Shogaku Ichinensei
Original run September 1976December 1976
Written by Go Nagai
Illustrated by Gosaku Ota
Published by Shogakukan
Demographic Shōnen
Magazine Bessatsu Shōnen Sunday, TV-kun
Original run August 1976February 1977
Written by Go Nagai
Illustrated by Panchosu Ishiwata, Gosaku Ota
Published by Asahi Sonorama
Demographic Shōnen
Magazine Asahi Shōnen
Original run July 30, 1976September 20, 1976
Volumes 2
Wikipe-tan face.svg Anime and Manga portal

Groizer X (Japanese: グロイザーX, Hepburn: Guroizā X?) is an anime series aired from 1976 to 1977. There were 36 episodes. It is also referred to as Gloyzer X and Gloizer X.


The Gaira aliens, hidden in the Arctic, plan to conquer Earth. Captured and forced to work for the aliens, Dr. Yan creates the ultimate weapon, a transformable aerial robot called Groizer X. Groizer X was 100 meters tall and weighed 1200 tons. Entrusted to his daughter Rita, Groizer X escapes the clutches of the Gaira and lands in Japan, where pilot Joe Kaisaka meets a wounded Rita. Taking up the controls of Groizer X, Jo and Rita fight against the Gaira invasion.


The anime was created by Go Nagai as a side project during the time he was busy with the various Mazinger series, Groizer X nevertheless managed to be converted into a TV series. The robot transforms into a jet, while the show included intense battle sequences and aerial combat, it remained a secondary super robot series.


Japanese Name Voiced by
Joe Kaisaka Tōru Furuya
Rita Yan
Baku Naoki Tatsuta
Dottor Yanki
Prof. Tobishima
Ghelden Narratore


The original Groizer X toyline are one of the very few Super Robot toys produced by Nakajima Manufacturing Company instead of the industry dominant Popy Pleasure.[1]

Yamato then did a GN-U Groizer X figure released in 2007. A Manga version of the figure was produced, only painted in green.

Outside Japan[edit]

While not being a great success in Japan, Groizer X had a considerable impact in Brazil, where it was aired under the name O Pirata do Espaço ("The Space Pirate") in 1984/1986 at the Manchete Network. Only two mecha anime were shown in the country, and Groizer X was the only one to air in its entirety (Voltes V, the other one, only aired for five episodes). In Latin America, the anime was aired under the name "El Justiciero". In Italy it was one of the few robotic anime to be aired on Silvio Berlusconi's Canale 5, in 1981, where it failed to garner much following and was never replayed.

References in other series[edit]

In the 2009 anime Shin Mazinger Shougeki! Z Hen, Count Brocken deploys an updated Groizer, "Groizer X-10" to attack Mazinger Z and the Mazinger Corps. Later on, Groizer's X-9, X-11 and X-12 are also shown, used by the Count to sink the Submarine Fortress Saluud.


  1. ^ Toybox DX. "Toybox DX." Nakajima Diecast. Retrieved on 2006-11-21.

External links[edit]