Zagan (also Zagam) is a Great King and President of Hell, commanding over thirty-three legions of demons. Zagan is depicted as a griffin-winged bull that turns into a man after a while.
He makes men witty; he can also turn wine into water, water into wine, and blood into wine. Other of his powers is that of turning metals into coins that are made with that metal (i.e., gold into a gold coin, copper into a copper coin, etc.).
Gallery
Seal of Zagan
Zagan in Shin Megami Tensei