Marchosias

In demonology, Marchosias is a powerful Grand Marquis of Hell, who commands thirty legions of demons. He is a strong and excellent fighter and very faithful to the magician giving correct answers to all the questions. Marchosias waited for 1,200 years to return to heaven with the undead angels, but they deceived him.

It is shown as a wolf in the shape of a man, with wings of a faucet and a serpent's tail, which on request accepts to transform into a man.