Demon Slayer has introduced us to several powerful demons, including Kokushibo, the Upper Moon One in Muzan's army. Apart from him, we have seen the might of Gyutaro, Daki, Akaza, and, of course ...

With his Blood Demon Art, Gyokko can create anything he likes within his porcelain vases. At the time of the attack on the Swordsmith Village, Gyokko used his vases to spawn swarms of demon fish ...