Haagenti
In demonology Haagenti is a Great President of Hell, ruling thirty-three legions of demons. He makes men wise, instructing them in every subject, transmutes all metals in gold, and changes wine into water and water into wine.Haagenti is depicted as a big bull with the wings of a griffin, changing into a man under request of the conjurer.
See also The Lesser Key of Solomon, Ars Goetia.