Space Ironman Kyodain

From wikipedia:

Space Ironman Kyodain (宇宙鉄人キョーダイン, Uchū Tetsujin Kyōdain)^[1] is a Japanese tokusatsu science fiction superhero television series. The show, like numerous others of its type and era, were produced as a joint effort between manga artist Shotaro Ishinomori and Toei Company producer Toru Hirayama. It premiered in 1976 and ran for 48 episodes. The show is well known for its strange plot and costume design, rapid-fire and purposefully disorienting editing, and unique, sometimes surreal, atmosphere. The late Yūsuke Natsu and Takeshi Sasaki (who previously portrayed Hayato Ichimonji in Kamen Rider) starred as Skyzel and Grounzel respectively.

The plot of the program involves an alien empire from the planet "Dada" called the "Robot Army Corps". When they kidnap a human scientist, Dr. Hayami, and two of his three sons and force him to improve their technology, he has no choice but to go along with them, despite his deep anger, resentment, and guilt.

One year later, their empire sufficiently advanced, the Robot Army Corps return to Earth, ready to put their plans into action—however, two unknown robots charge in and stop their invasion cold. It is then revealed that Dr. Hayama programmed the personalities of his two kidnapped sons, Joji and Ryuji, into the two Cyberroids to combat the Robot Army and care for his youngest son, Kenji. Using their Cyber Graphy to assume the forms of Joji and Ryuji, the older brother Skyzel and his younger brother Grounzel carry out Dr. Hayami's wish as the Kyodain. 

John's Notes: 

This is one of my favorite tokusatsu from the 70's era. The Dada army is really ridiculous which makes sense as the series is told from the youngest brother's perspective. I also like how the Kyodin can reconfigure for ground or air.

Popy and Mattel

There were several toys released by Popy but only the two vehicle transformations made it to Mattel as part of the Shogun Action Vehicles collection.

• Popy GA-47 Skyzel - Mattel Shogun Action Vehicle #2697 Sky Jet
  
• Popy GA-49 Granzel - Mattel Shogun Action Vehicle #2696 Grand Car
  

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