Loki
Loki, the son of 2 giants, was the trickster god in Norse mythology who was always doing his best to cause trouble.
Lucifer
Lucifer was once one of the Seraphim who rebelled against God and was cast out of heaven.
Malphas
A grand-president of hell who governs 40 legions, Malphas appears as a raven, or in human form with a raucous voice.
Mammon
Mammon is the demon of avarice. Milton says he taught men to rend the breast of the earth to wrest away her treasures.
Mara
Mara is the evil spirit in Buddhism who tempted Siddharta during the time he sat beneath the Bo Tree and meditated.
Marax
Marax, the 21st spirit, is a great Earl and President, who appears as a great bull with a man's face.
Marbas
Marbas, the 5th spirit, is a Great President, and appears in the form of a Great Lion.