|This article is about a/an episode in Choudenshi Bioman.|
Self Destruct! Mecha-Humans (自爆！メカ人間 Jibaku! Meka Ningen) is the fourth episode of Choudenshi Bioman. In the Philippine English Dub, the title of the episode changed to "Mechaclones! Subterfuge".
Using Shirou's animal informants, Bioman discovers a Gear plot to replace humans with exploding mecha-humans to sabotage a super-energy plant.
The episode begins with a Mechaclone disguised as a human scientist self-destructing and destroying the National Science Laboratory. With Shirou's help from a pigeon named Pedigrass, the Biomen go to investigate Techno Town. Shirou asks an officer for any suspicious activity, but the officer claims that Techno Town is a peaceful town. Pedigrass tells Shirou about the USP Zone, but gets killed by Mettzler of the Five Beastnoids. Mettzler prepares to kill him, but the rest of the Biomen save him. Mourning Pedigrass' death, Shirou investigates the USP Zone, when he is ambushed the officer, who is actually a Mechaclone in disguise. After destroying the Mechaclone, Shiro warns his teammates. The Mechaclones disguise themselves as Second National Science Laboratory workers and kill their real counterparts. Shirou sneaks in, but gets captured. Mason destroys the laboratory, but Shirou escapes and heads over to the Third National Science Laboratory with the rest of his team. Using their Bio-Brains, Green2 and Blue3 destroy the imposters, but Mettzler arrives. After defeating the Mechaclones, Mettzler turns invisible, but Green2 and Blue3 find him. The team unleashes the Bio Team Kick to defeat Mettzler, but the Beetle Canth arrives. Peebo launches the Bio Dragon and the Biomen enter to launch the Bio Jets. After destroying the Mechaclone ships, the Biojets combine to form the Bio Robo. After a brief fight, Bio Robo destroys Beetle Canth with the Comet Cutter and the episode ends.
- Shirou Gou (郷 史朗 Gō Shirō): Ryōsuke Sakamoto (阪本 良介 Sakamoto Ryōsuke)
- Shingo Takasugi (高杉 真吾 Takasugi Shingo): Naoto Ōta (太田 直人 Ōta Naoto)
- Ryuuta Nanbara (南原 竜太 Nanbara Ryūta): Akito Ōsuga (大須賀 昭人 Ōsuga Akito)
- Mika Koizumi (小泉 ミカ Koizumi Mika): Yuki Yajima (矢島 由紀 Yajima Yuki)
- Hikaru Katsuragi (桂木 ひかる Katsuragi Hikaru): Michiko Makino (牧野 美千子 Makino Michiko)
- Peebo (ピーボ Pībo, Voice): Yoshiko Ōta (太田 淑子 Ōta Yoshiko)
- Doctor Man (ドクターマン Dokutā Man): Munemaru Kōda (幸田 宗丸 Kōda Munemaru)
- Mason (メイスン Meisun): Hirohisa Nakata (中田 博久 Nakata Hirohisa)
- Farrah (ファラ Fara): Yōko Asuka (飛鳥 裕子 Asuka Yōko)
- Monster (モンスター Monsutā): Strong Kongō (ストロング金剛 Sutorongu Kongō)
- Mettzler (メッツラー Mettsurā, Voice): Hiroshi Izawa (伊沢 弘 Izawa Hiroshi)
- Police(Mecha Human): Daisuke Odera (小寺大介 Odera Daisuke)
- Man, Man(Mecha Human): Yasuhiro Fukuoka (福岡康裕 Fukuoka Yasuhiro)
- Guard: Toyoki Shishikura (宍倉豊喜 Shishikura Toyoki)
- Guard(Mecha Human): Motohiro Hozumi (穂積元裕 Hodumi Motohiro)
- Researcher: Masako Tajima (田島政子 Tajima Masako)
- Researcher(Mecha Human): Hiroshi Nakamura (中村弘司 Nakamura Hiroshi), Eri Ikeda (池田恵理 Ikeda Eri)
- Mecha Human Army: Yuichi Hachisuka (蜂須賀 祐一 Hachisuka Yūichi), Shoji Hachisuka (蜂須賀 昭二 Hachisuka Shōji), Mari Ikeda (池田麻里 Ikeda Mari)
- Red1: Kazuo Niibori (新堀 和男 Niibori Kazuo)
- Green2: Makoto Kenmochi (釼持 誠 Kenmochi Makoto)
- Blue3: Tsutomu Kitagawa (喜多 川務 Kitagawa Tsutomu)
- Yellow4: Keiji Tsujii (辻井 啓嗣 Tsujii Keiji)
- Pink5: Michihiro Takeda (竹田 道弘 Takeda Michihiro)
- Peebo: Nahoko Nomoto (野本 奈穂子 Nomoto Nahoko)
- BioRobo: Hideaki Kusaka (日下 秀昭 Kusaka Hideaki)
- Mettzler: Noriaki Kaneda
- Beetle Canth: Hirofumi Ishigaki (石垣 広文 Ishigaki Hirofumi)
- Viewership: 10.7%
Choudenshi Bioman Volume 1 features episodes 1-11.