Hēi ( 黑 , Black) is the leader of the organisation Hitokiri and all the lands under its control and is a former Jōnin from Amegakure. He is the most feared man in the shinobi world and despite effectively being the ruler of a great part of the world is the most wanted man in the world. He is an extremely powerful ninja and such is his fame that all the surviving villages have ordered to not engage unless in a four man team. He is also known as the Dark Lord. As he possesses the rare Kekkei Genkai, the Dark Release and was born in Amegakure, it is speculated that he may be a member of a clan of Amegakure who posses the kekki genkai. He is also known as Kageoni ( 影鬼 , Shadow Demon). He is the chief antagonist of Naruto Keishō.