 This article is about a monster in the Kamen Rider Series.
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Hydragen (ヒドラーゲン, Hidorāgen), originally known as Mieko (ミエコ), is a female hydrozoa cyborg created by Shocker and only appeared in Kamen Rider Episode 99.
History[]
Mieko was once a normal human until she was kidnapped by Shocker. She got married with a man called Kenji in Shocker's jailhouse.
When Takeshi Hongo and Hayato Ichimonji defeated Shocker in 1973, she and her husband were free, but later Hasami Jaguar appeared and asked them to join Destron. Kenji refused and was killed by Hasami Jaguar. Meiko became mad and decided to take revenge against Destron and the Double Riders, then disappeared in the deep sea.
Notes[]
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- Hydragen was based on an unused Shocker monster in a 1971 card collection game.