Furfur (also Furtur) is a powerful Great Earl of Hell, being the ruler of twenty-six legions of demons. He is a liar unless compelled to enter a magic triangle where he gives true answers to every question, speaking with a rough voice. Furfur causes love between a man and a woman, creates storms, tempests, thunder, lightning, and blasts, and teaches on secret and divine things.
He is depicted as a hart or winged hart, and also as an angel.
"Furfur" or "furfures" in Latin means "bran". However it seems more likely that the name is a corruption of "Furcifer", the Latin word for "scoundrel". Slightly less likely considering the context, but still possible, is that the name originated from "fur", Latin for "thief".