This article is about a/an episode in Android Kikaider.
Jiro's Younger Brother: The Formidable Enemy Hakaider!
Android Kikaider, Episode 37
Air date March 24 1973
Written by Hideka Nagasaka
Directed by Toyohiko Hatakeyama
Episode Guide
Crazed Jiro Attacks Komyoji
Hakaider Kills Jiro!

Jiro's Younger Brother: The Formidable Enemy Hakaider! (ジローの弟 強敵ハカイダー! Jirō no Otōto Kyōteki Hakaidā!?) is the thirty-seventh episode of Android Kikaider.


Jiro manages to save a little girl from Starfish Purple. Meanwhile, DARK forces Dr. Komyoji to create the evil warrior, Hakaida.


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  • If Mitsuko`s friend saw Komyoji being attacked by Jiro then wouldn`t she have seen Purple Starfish and the androids abduct Komyoji?
  • The officers shown in this episode have proven themselves to be quite clueless as they made one mistake after another (not to mention they made things worse in almost all other episodes after this one) without seeing through the obvious.
  • This episode hints that when Jiro transforms he isn`t necessarily speaking as he was rendered mute yet still shouted his battle cry when transforming.
  • The little girl that Jiro saved should have told the officers about how he (Jiro) saved her from dark`s minions.
  • If the officers knew how strong Jiro is, wouldn`t they have kept a close eye on him (as well as used better weaponry) instead of being so careless?
  • This episode officially introduced Saburo.
  • Despite what the Narrator said, Jiro does indeed harm the scientists (as well as some officers) in the next episode to break out of jail.