Takehiko (岳彦, Takehiko) is the name of a subject created by Genshou Yamaguchi. Originally being a resident of Kusagakure, Takehiko was spotted during one of his assassination missions. The eyes that spotted him belonged to the mad scientist, and he knew that the young boy would be perfect for his experiments. He spent most of his days in Genshou's dark lab, dreaming of seeing his parents once more, but, he succumbed to the man's influence. After much experimentation, Takehiko is a loyal follower of Genshou and vows to protect him with his life.