Marchosias
A great marquis of hell who commands 30 legions, Marchocias appears as a she-wolf with griffin wings and a serpent's tail, and spit flames.
Mastema
Mastema is another name for Satan in the Book of Jubilees and other non-biblical texts.
Melchiresa
Melchiresa is the one of the names for a predominant evil being in several of the fragments of the Dead Sea Scrolls.
Melchom
Melchom is the paymaster of civil servants in hell. He is known as the demon who carries the purse.
Mephistophiles
Mephistophiles is the name of the devil in the Faust myths of the late Middle Ages through the Renaissance.
Mictlantecuhtli
In Aztec mythology, Mictlantecuhtli was the skeletal god of death who ruled over Mictlan, the underworld, with his wife, Mictlancihuatl.
Moloch
Moloch was the god of the Ammonites, portrayed as a bronze statue with a calf's head adorned with a royal crown and seated on a throne.
Murmur
Murmur, the 54th spirit, is a great Duke who appears as a warrior riding a gryphon.