- Not to be confused with Demon
The Devil is a supernatural entity and counterpart to GodWP. He is an unseen character in Bible Black that on rare occasions communicates with some of the series' characters only by way of a dark, deep voice. He often reveals himself through the Gate of Orkus or Orcus, his portal to hell. It is also possible that these instances are simply communications of one of multiple demons (see Trivia).
The Devil first reveals himself after being summoned by Rose Cross, a witchcraft club started by female Academy students and headed by Hiroko Takashiro. The girls attempt to summon him in order to gain his powers by sacrificing the life of young student Reika Kitami. The ritual fails, and the club's new leader - Nami Kozono - frantically starts killing all the members to successfully open the Gate of Orkus. Before she can make her appeal to the Devil, however, she is stabbed to death by Kitami. The Devil then offers Kitami a twelve year contract; allowing the girl to live in exchange for her soul. Kitami accepts, and her mind and body are corrupted by evil magic. Knowing her contract will expire, she starts looking for a way to escape her fate.
- It is unclear if the Devil is the single all-encompassing entity and embodiment of evil or simply one of 72 powerful demonsWP mentioned in the first Bible Black game. However, for the purpose of clarity, this wiki will refer to this entity as the Devil to not confuse it with the lesser demon that appears in Origins.
- In the game, the demon priestess Nami summons in a flashback is designated as Beelzebub, a contemporary name for the Devil.