Assassin's True Name is Shuten-douji (酒呑童子, Shuten-dōji), one of Japan's Three Great Monsters. The boss that governed the Oni within the castle structure on Mount Ooe during the Heian period. There are various theories about Shuten-douji’s origins. There is a theory where she is considered the child of a human and the Great God Ibuki of Mount Ibuki (= Yamata no Orochi), and there is another theory where she is considered the heaven-sent child of Mount Togakushi (= Kuzuryuu). At any rate, she is the child of a Dragon God, possessing a shared background with Sakata Kintoki.Due to her anecdotes and vestiges, she is classified as an "Anti-Hero"