Bifrons is a demon described in the demonological grimoires the Lesser Key of Solomon (as the forty-sixth spirit) and the Pseudomonarchia Daemonum (as the forty-seventh spirit), as well as being mentioned in the Dictionnaire Infernal. In these works, he is described as an earl who initially appears as a monster before adopting a more human form. His duties include teaching arts and sciences, including astrology, geometry, and the properties of different plants and stones.
He also moves bodies into different graves, lights candles over graves, and (depending on the version) commands either 6, 26, or 60 legions of spirits. According to Rudd, Bifrons is opposed by the Shemhamphorasch angel Ariel.