Rōyakan

Rouyakan is a wolf demon of hell, who is gentle and protects the forest. Rouyakan has the ability to spit an infinite number of wolves out of his mouth. One day, Naraku put a jewel shard on his forehead and became evil. He made Rouyakan to find Inuyasha and kill him. But he failed and was free from the jewel shard's power. Rouyakan returns when the panther tribe came back. He came and wanted to help Sesshomaru, but was denied. It was revealed that 50 years ago when the panther tribe came back, Rouyakan was in debt to Sesshomaru's father, who killed the leader of the panther tribe. he fought the best he could with other demons that the Great Dog Demon saved, but they retreated.