Yoriichi Type Zero ( (より) (いち) (ぜろ) (しき) Yoriichi Reishiki?) is a Battle Doll constructed by Kotetsu's ancestors during the Sengoku Era. According to Kotetsu's father, it was based off of an actual person, that being Yoriichi Tsugikuni.[2][3]


Yoriichi Type Zero's appearance largely resembles Yoriichi Tsugikuni, the person it was modelled after. It has six arms and hands that each hold a katana, due to the fact that two arms weren't enough to even come close replicate Yoriichi's movements. It is also shown to be heavily damaged, with half of its face and one of its arms missing.



Swordsmith Village Arc

Abilities and Powers

Yoriichi Type Zero has 108 different movements based off of the person it was modelled after. Its power surpasses most humans, which is why it is used as a training dummy for Demon Slayers. However, as centuries passed on, it has vastly withered and eroded, making it likely far weaker than what it was during the Sengoku Era.



  1. Kimetsu no Yaiba Manga: Chapter 103 (Page 3).
  2. Kimetsu no Yaiba Manga: Chapter 102 (Pages 17-19).
  3. Kimetsu no Yaiba Manga: Chapter 103 (Pages 2-3).
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