Aym, also known as Aim, Harborim or Haborym, is the 23rd demonic spirit of the Ars Goetia and a great duke of Hell. He appears in the form of a man with a handsome body; however, he possesses three heads, the first head being a serpent's, the second being the head of a man with two stars on his forehead, and the third head is that of a cat (although some say of a calf).
He rides on a viper carrying a hot fire brand in his hand, which he will use to set cities, castles and other places of importance on fire even if requested or not. He can also increase a man's wit and cunning and gives true answers on private matters of others unconditionally. He governs 26 legions of infernal spirits.