Yamata no Orochi is a powerful and mythical eight-headed serpent from the anime series Onmyoji. In the series, Orochi represents an ancient, formidable force that once terrorized the land. It is known for its immense strength and is considered a symbol of natural disaster and chaos. As a central antagonist, Orochi's presence drives the story's conflict and challenges the protagonists. The characters in the series must confront and overcome this legendary beast to restore balance and peace to the world, showcasing themes of courage and unity.