About Demonology
Demonology is the systematic study of demons or the beliefs and theories of demons, their origin, actions and intent. Insofar as it involves exegesis, demonology is an orthodox branch of theology. It is the branch of theology relating to superhuman beings who are not gods. It deals both with benevolent beings that have no circle of worshippers or so limited a circle as to be below the rank of gods, and with malevolent beings of all kinds. The original sense of "demon," from the time of Homer onward, was a benevolent being; but in English the name now holds connotations of malevolence.

Demons, when regarded as spirits, may belong to either of the classes of spirits recognized by primitive animism; that is to say, they may be human, or non-human, separable souls, or discarnate spirits which have never inhabited a body. A sharp distinction is often drawn between these two classes, notably by the Melanesians, the West Africans, and others; the Arab djinn, for example, are not reducible to modified human souls; at the same time these classes are frequently conceived as producing identical results, e.g. diseases. Demonology, though often referred to with negative connotation, was not always seen as evil or devilish as the term would have one believe.

The word demonology is derived from the Greek δα?μων, daimon, "demon"; and -λογ?α, -logia. It's interesting to note that the meaning of demon, as originated from the Greek Daimon, was regarded as a positive spirit. Demonology, in general, is a product of religion.

Popular Names of Demons

Apollyon The King of Demons Rev 9:11
Abigor Christian demonology -  commands 60 legions
Adramelech Arch Demon whose name means, "King of Fire"
Agares First Duke of the East, commands 31 legions; appears willingly
Alocer Strong Duke  commands 36 legions; lion's face, dressed as a knight on a horse
Amduscius Great Duke, governs 29 legions; looks like a unicorn
Andras Marquesse, commands 30 legions; bird head with angel-like wings
Asmoday Prince of demons; thought to be the serpent that deceived Eve
Asmodeus Demon of wrath, banished by Raphael in the Book of Tobit 8:3
Astaroth Strong Duke over 40 legions and the treasurer of hell
Aym Great Duke, who commands 26 legions; from christian demonology
Ayperos Prince, commands 36 legions; from christian demonoly
Azazel Chief of the goat-demons or "hairy demons"
Bael Head of the Infernal Armies of 66 legions
Balam Terrible king with three heads and commands 40 legions
Beelzebub Prince of Demons, aka Lord of the Flies, former highest ranking angel in heaven
Belial Beautiful demon, created after Lucifer, Very powerful and dangerous. Chief of all devils, brings about wickedness, guilt & worthlessness
Belphegor Demon or "god" of the Moabites, Numbers 25
Berith Great Duke of hell who governs 26 legions, appears as a red soldier on a red horse
Bifrons declares the understanding of geometry, astrology and other arts
Botis Appears as a viper, and proclaims the past and future
Buer President of hell, of the second order, and commands 50 legions
Caym Great President who takes the shape of a thrush; rules 30 legions
Charon The boat man who brings souls across the river Styx
Cresil Demon of impurity and laziness
Crocell Grand Duke who appears as an angel, and governs 48 legions
Deumos Female demon with 4 horns and a crown
Eurynome Superior demon who feeds on corpses; the Prince of Death
Focalor Grand Duke who drowns men and overthrows ships of war
Furfur Count of hell, commands 26 legions; appears as angel with a flaming tail
Gaap Prince of hell, intensifies love and hatred; transporter demon
Geryon Giant centaur, guardian of hell
Haures Strong Duke of hell, commands 20 legions and is very frightful with eye aflame
Ipos Demon count of hell who commands 36 legions; looks like a lion-headed angel
Jezebeth Demon of falsehoods and lies
Kasdeya From the "Book of Enoch", the 5th Satan
Kobal Demon of hilarity
Leonard Master of black magic and sorcery
Leviathan Dragon of the Sea, the Crooked Serpent of the abyss
Lilith Demon of waste.
Lucifer Light bearer, son of the morning; former seraphim cast out of heaven
Malphas Grand president of hell, commands 40 legions; appears as a raven
Mammon Demon of avarice
Mastema Leader of fallen angels; job is to tempt men to sin & accuse them before God
Melchom Demon who carries the money purse; payer of servants
Mephistopheles Another name for the devil in the Middle Ages
Merihim Dark Prince of pestilence
Moloch Demon worshipped by the Israelites through child sacrifice
Mullin Demon lieutenant of the demon Leonard
Murmur Great Duke, comes with trumpets sounding and rules 30 legions
Naberius Strong demon in charge of 29 legions, a Marquis of hell
Nergal Second order demon, commands the secret police
Nicor Water demon known for drowning humans
Nybbas Manager of visions and dreams, inferior order charlatan
Nysrogh Second order demon, chief of the house of princes
Oriax Marquis, demon who commands 30 legions; teaches astrology
Ornias name of the harassing demon
Ose Great President, governs 30 legions
Paymon a king of hell, master of ceremonies; governs 200 legions
Philatanus Demon who assists Belial in sodomy and pedophile behaviors
Proserpine aka Persephone, princess of hell
Pruflas head of 26 legions, has the head of an owl; provokes wars and quarrels
Pyro Prince of falsehoods and lies
Raum Count or Great Earle, commands 30 legions; seen as a crow
Rimmon aka Damas, an ambassador from hell
Ronove Marquis of hell, commanding 19 legions, teaches languages
Ronwe Inferior demon, commands 19 legions
Samael Demon angel of death, prince of the power of the air
Semiazas Chief demon of fallen angels
Shax Duke of hell, commanding 30 legions, deceitful thief; appears as a stork
Shalbriri Demon of blindness
Sonneillon Demon of hatred
Stolas High prince of hell, commanding 26 legions; teacher of astronomy
Succorbenoth Chief eunuch, sexless, demon of gates
Thamuz Ambassador of hell, demon master of big weapons
Ukobach Inferior demon who maintains the fires of hell; appears ablaze
Uphir Demon physician
Uvall Duke; Commands 36 legions, knows the past, present & future; strong and scary
Valafar Strong Duke, commands 10 legions, appears in the shape of a lion
Vepar Grand Duke, strong; guide of waters, like a mermaid
Verdelet Master of ceremonies
Verin Demon of impatience
Vetis Demon of corruption
Xaphan Second order demon, former fallen angel, fans the furnace flames
Zagan Demon King, deceitful, commands 33 legions
Zepar Grand Duke, appears as a soldier, commanding 26 legions

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