Bishop Hazel Grouse was born in a country far to the west (presumably North America). He was abandoned as a child and taken in by the Bishop of the local church. About ten years prior to his introduction, his master is killed by a youkai, leading him to hate them. He vows then to destroy all youkai on the earth. He carries a pendant with him that allows him to store souls. In his travelings, should he run into a person who has died, he has the ability to bring them back using one of the souls contained within the pendant.
His traveling companion, Gat (or Gato), is a large man said to have been born into a tribe that worshiped nature. One day, the demons they had forged peace with began to attack the tribe. Gat opposed Hazel's decision to kill them and interfered in a fight between Hazel and a demon. Hazel accidentally killed him, but brought him back to life. The villagers shunned Gat, seeing him as an abomination against nature, so he now follows Hazel where ever he goes. He has said that he believes that it is his destiny to protect Hazel with his life.