Mouryoumaru

Mouryoumaru (魍魎丸, Mōryōmaru?) is an enemy of Naraku, despite being indirectly created by his powers via Hakudoshi. He is a 100-foot long demonic golem who can shoot blasts of energy from his arm. At first, he is merely a life force puppet made from youkai, lacking any true personality, soul or will. Kanna places The Infant inside him, giving Moryomaru Naraku's physical life force. Moryomaru increases in power as he absorbs different youkai to gain their abilities, and nearly defeats a combined onslaught of most of Naraku's enemies, including Kikyo, Kohaku, Kagome, InuYasha, Miroku, Sango, Shippo, and Sesshomaru.

He succeeds in breaking Sesshomaru's sword, but flees after nearly losing a shard of the Shikon Jewel. He is killed when he devours Naraku, and Naraku absorbs his power from the inside and uses it to be reborn.