Definition: In the Bible, "Amphoterus" refers to the demon in the Book of Revelation who represents evil spirits. The term "demon" is a Greek root used to describe demons and their manifestations, including entities such as fire, thunder, and wind. Specifically, the Book of Revelation describes the demonic forces that are described as having "a mouth like fire," appearing "with fiery breath", "like lions roaring in fury", and having "searing eyes."