The 46th spirit of the Goetia and an Earl of Hell. He first appears as a monster but after a while he will take the shape of a man at the command of the summoner.
His office is to teach men astrology, geometry, and other arts and sciences. He also will teach men the uses of herbs, about precious gems, and different types of wood.
Upon the command of his summoner, he will also move a buried body to another location or light candles upon the graves of the deceased that he has control over. Bifrons controls over 26 legions of infernal spirits.
Bifrons is also an alternate name for Janus, the Roman two-headed and double-natured god of gateways and new beginnings.