Gatenmaru

Gatenmaru is a demon from the manga and anime series InuYasha.

He can transform into a large moth, and could possibly also be one of Naraku's short lived incarnations. He hasone special power in particular: to create a poison cocoon which was used to seal InuYasha in before his demon blood took over and he was able to slash the cocoon open and defeat Gatenmaru. He can also use his large battle axe as a weapon when in human form.

InuYasha also later faces Gatenmaru's brother, who instead of using poison cocoons as an attack, instead encases the victims and attacks them in their dreams.