Bōrei (亡霊, "Revenant") or is also referred to as Revenant (亡霊, Bōrei) is a High-Tier Demon from the Seventh Hell. These demons are seen to be one of the most deadliest, and most powerful then almost all demons from Hell, and are basically the tier of Satan-Tier (サタンティア, Satantia) despite not being a Satan.