Yan Luo
Yan Luo is the ruler of the hell.
From the very beginning, it had always been a he, but not a she.
He has a judge who holds a brush and a book in his hands, which records the life and death of the living people.
When someone has his life ended, he will be brought to the face of Tan Luo and wait for the judge.
It's Bullhead and Horseface that will bring the spirit to the judge.