He is an agent of Tártaros to protect the gate of Tártaros.
The gate is sealed with old weapons of the former human race who turned the flag against the former gods. He is the weapon itself and the human soul is lodged by the will of Tártaros body.
He forgot about what kind of human being he was still because he spent a long time in his absence, but he has not forgotten that he used to be Japanese before and rice cake is his favorite food.

His design motif is a samurai.