in Demonology Amon is a Marquis in Hell who commands forty legions of demons. He tells things of the past and the future.
It is described as a wolf with a serpent's tail that throws fire, a raven-headed man and dog teeth or just a raven-headed man.
Probably inspired by the Egyptian god Ammit.
Appears as a character in the 2000ad story - Necrophim.