CharacteristicsDemons are bloodthirsty, vicious monsters who only care about being more powerful than the ones they deem weak. Unlike the angel's order and discipline, demons are rampant and unorganized. In battle, they relentlessly attack their enemies with brute force. Some are very small like Imps, or very large like Siegebreaker Assault Beasts. Demons usually use claws, talons, or fangs to rip apart enemies during battle. Demons can also sustain a large amount of pain and wounds before dying. Demons, unlike angels, are physical beings, and when they die stay where they are. Demon's blood are strange colors, like purple, green, and orange. It is also important to note that Undead are not demons.
There are some cults in Sanctuary that worship demons, most notable the Triune and Dark Coven. While the Triune worked more in the shadows, the Dark Coven outright attacks towns and forces the people to do their work. Both cults worship a Great Evil.Lucion, Lilith's brother, during the Sin War in order to lead humanity to the forces of Hell. At first they seem kind and compassionate, but then reveal their true intentions to their recruits, darkening their hearts. They worshipped three "spirits", which are actually the Prime Evils themselves. The Triune was destroyed by Uldyssian and his nephalem followers.
- Dialon, Spirit of Determination: Dialon was represented as a stubborn ram, and was beleived to bring purpose to humanity. In truth, worshippers of Dialon were really worshipping Diablo, Lord of Terror.
- Bala, Spirit of Creation: Bala is represented as a leaf, and taught the ways of nature and architectural triumphs of humanity. In truth, worshippers of Bala were really worshipping Baal, Lord of Destruction.
- Mefis, Spirit of Love: Mefis is represented as a red circle the Kehjani symbol of the heart. Mefis taught the ways of love and kindness, and the Primus would often say how vital Mefis would be to Creation and Determination. In truth, worshippers of Mefis worshipped Mephisto, Lord of Hatred.
The Dark Coven's origins are unknown, but they seem to be a new version of the Triune. The Coven is led by the witch Maghda, who carries out her master's deeds. The Dark Coven worships Belial, the Lord of Lies.
Presence in Sanctuary
Demons cannot exist naturally in Sanctuary and must be summoned through a magical ritual. Their spirits cannot usually manifest itself, so they require mortal hosts in order to take shape. Dark Cultists often summon up demons from the Burning Hells to serve them in battle. Thralls, after killed, are banished back to Hell after they have been defeated.
The Sin War
During the Sin War, when Mephisto and the renegade angel Inarius sought to lure man to the forces of dark and light, demons battled the High Heavens relentlessly to gain control. This kept on until Uldyssian made the factions have a brief truce, for the sake of humanity.
During the events of Diablo I, when the Lord of Terror had possessed the King of Tristram, Leoric, demons were attacking the small town and attempting to gain entrance to the Tristram Cathedral. He then later gains control of Prince Albrecht, after Archbishop Lazarus impales him with Diablo's soulstone. Diablo then summons countless hordes of demons, making the town a outpost for the Demonic Legion. He doesn't stop there, and summons demons to attack the town, as well as freeing his brothers, Baal and Mephisto. The hero then fights his way through the hordes until he reaches the cathedral. There, he kills the rest of the demons and traps Diablo by shoving the soulstone of Diablo into his forehead.
In Diablo II, the Dark Wanderer leads a group of demons upon a tavern, in which Marius, the narrator of the story sees and decides to follow him. Diablo leaves "footprints" of demons to stop the group of heroes trying to find and kill him. He also enlists two Lesser Evils, Duriel and Andariel, to protect him from the group. When Baal is freed, Diablo begins to wrest control of Sanctuary.Sescheron. He kills a barbarian guarding it, and the demons storm the fortress and raze it. He continues to lead his army on a murderous rampage across the land to Mount Arreat, and lays seige to Harrogath. The Lord of Destruction leads his army into the mountain, where he hopes to corrupt the Worldstone and end the Great Conflict.
Twenty years after the destruction of the Worldstone, Sanctuary is preparing for a full out invasion from the Burning Hells. But it never happened, attracting the intrest of Deckard Cain to find out why. Belial, the Lord of Lies, leads his Dark Coven and a portion of the Demonic Legion and beseiges Caldeum. Belial is later killed and trapped in the Black Soulstone by a group of nephalem. Azmodan, the Lord of Sin, then realizes the power of the Black Soulstone and breaks the Demonic Legion from Arreat Crater to obtain it. He is later thwarted by the same group of nephalem that killed Belial. The victory is short lived because Adria the Witch is revealed that Leah, her daughter, is also the daughter of Diablo. Adria then absorbs the Black Soulstone into Leah, and she opens a portal to Heaven. Diablo, now the Prime Evil, then proceeds to wound Archangel Imperius and destroy the Diamond Gates, leading the full force of the Demonic Legion into the Silver City. Diablo is killed later by the group of nephalem, ending the Great Conflict forever.
HistoryDemons originate from the Black Abyss or are spawned within the Hells themselves. It is not known how the first demons came into being, but it is revealed that other entities - even humans - can eventually become demons (see the Goatman article for instance). Demons have been in creation ever since Tathamet was killed and his body became the foundation for Hell. Demons are enlisted in the Demonic Legion, serving their masters with a bloodthirsty appetite for battle and blood. The demonic armies usually greatly outnumber the opposing force, but are very unorginized because of their bloodthirsty behavior. There are thousands of different kinds of demons, ranging in size from a small imp to a massive Siegebreaker Assault Beast.
Most demons can only use weapons to fight, but other demons, like Demonic Hell-Bearers, can scale walls and spew out more forces to combat enemies. Many larger demons are used to decimate forces so smaller troops can get into enemy lines. Demons like The Butcher are very skilled in different weapons, such as chains or swords. Some demons, like Serpent Magi, are gifted in magic and can teleport and cast spells. The Great Evils are much more powerful than normal demons, and they can bend them to their will. Arreat Crater Flyers have the ability to soar above the enemy with their wings.
The Great Evils are manifestations of the beast Tathamet, and they lead demons into battle against the High Heavens. The Triune worships these demons as gods, along with the Dark Coven. The evils can only be killed if they are trapped in a soulstone and it is smashed. There are seven evils in all, the three Prime Evils and the four Lesser Evils.
The Prime Evils
Commonly known as "The Three", they were the most powerful demons in Hell until the Dark Exile. Mephisto is the oldest brother, followed by Baal, and then the most powerful, Diablo.
- Diablo, Lord of Terror - Youngest of the Evils but the most powerful
- Mephisto, Lord of Hatred - Eldest of the Three
- Baal, Lord of Destruction - Middle brother, demons he leads are more stupid than his brothers'
The Lesser Evils
- Azmodan, Lord of Sin - Greatest military tactician in the Burning Hells, last Evil to be trapped in the Black Soulstone
- Belial, Lord of Lies - Likes to hide in the shadows, beseiges Caldeum until a group of nephalem kill him
- Duriel, Lord of Pain - Has the appearence of a bug, killed by a group of heroes, twin of Andariel
- Andariel, Maiden of Anguish - Sided with Diablo to protect him from the heroes, killed shortly after
"Long ago, the heralds of pestilence were lesser demons who rebelled against Azmodan. The Lord of Sin vanquished them easily, but instead of slaying them, he granted each one a long arm infested with a poison that could kill anything but Azmodan himself. The heralds have been plague-riddled menaces ever since."
-Deckard Cain on the Heralds
These demons once tried to overthrow Azmodan, but failed. Instead, of killing them, Azmodan gave them a long arm that could harm anything but the Lord of Sin himself.
The KhazraThe Khazra, or "Goatmen" are a lesser form of demon. They were once human, until the powerful Vizjerei turned them into satyrs during the Mage Clan Wars. They now serve under the seven lords of Hell, and inhabit many areas around New Tristram.
Some Khazra, like Serpent Magi, are gifted in magic and the spiritual arts, sometimes even in magic. The Khazra are agile, quick, and efficient in melee and ranged combat. They wield long, deadly polearms that can be fatal if stricken with. They like to travel in packs, so they can overpower the opponent. Khazra are described as sluggish and filthy beasts.
The Khazra are divided into many different clans, and they often war with each other over resources or land. The following are the clans of the goatmen:
"Though I have searched every corner of the Great Library of Caldeum, I can find no references to the true fate of the Blood Clan khazra. Some crumbling papers hint that they made a pact to serve the mythical Lesser Evils, but surely such a thing cannot be considered proper scholarship... can it?" -Abd al-Hazir on the Blood Clan
"Some time ago, I revealed that the khazra, or goatmen, were originally humans until the Vizjerei corrupted them. For many years these creatures were simple and lethargic. These days have ended. Khazra attacks are widely reported, and the number of fatalities is higher than anything in my records..." -Abd al-Hazir on the Khazra
Hellflyers are a very special kind of demons, bred by Azmodan himself. After many victories for the Heavenly Host against Azmodan's forces, he wanted to design a demon that could soar through the air and reach the angels. The outcome was the Hellflyer, which had long wings, sharp teeth, and rigid claws that were powerful enough to rip angels apart. Some Hellflyers set their wings on fire. Hellflyers appear in Act III of Diablo III.
"The Morlu were once men, great warriors of old. But each of them had darkness within his soul, and Mephisto, the Lord of Hatred, used this flaw to trick them into his service. Mephisto's fury slowly burned away their mortal forms, leaving them fiery apparitions who know no pain, fear, or doubt." - Deckard Cain
The Morlu were once great warriors of men. However, Mephisto, Lord of Hatred, saw the darkness in their hearts. Mephisto then corrupted them and recruited the warriors into his ranks. His fury blew away their mortal froms, turning them into vicious demons. The Morlu then became great warriors of Hell, and some were gifted with sorcery. The Morlu now serve in Diablo's portion of the Legion. Morlu appear in Act IV of Diablo III, and serve Diablo in the Fall of the High Heavens.
There are no ranks in Hell, except for the Great Evils. However, there are many important demons worth mentioning.
- Assur - Leader of demons in Demonsbane, Diablo's favorite
- Astrogha - Fought in the Sin War
- Gulag - Servant of Baal; killed by Uldyssian
- Lilith - Daughter of the Prime Evil Mephisto and brother of the demon Lucion. Led demon rebels into the void and created Sanctuary with the Worldstone. Mother of the Nephalem.
- Lucion - Son of Mephisto and brother of Lilith. Led the Triune into the world and was killed by Uldyssian
- Xazax - Transforms an army of mortals into demons. Diablo kills him because of his power.
- Thonos - Summoned by Lilith to kill Achilios and Uldyssian, killed by Achilios
- Hephasto - Works at the Hellforge
- Kabraxis - Extreamly powerful demon; rivaled the Three
- Shenk - Commander of Baal's seige of Sescheron
- Cydaea, Maiden of Lust - Azmodan's consort, Sin Leuteniant, killed by a group of nephalem
- Ghom, Lord of Gluttony - Sin Leuteniant, kills anything in it's path, killed by a group of nephalem
- The Butcher - Type of powerful demon, one was killed by a group of nephalem in Leoric's Manor