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The Infinite Layers of the Abyss is the Chaotic Evil plane in Dungeons & Dragons great wheel cosmology. It's home to an infinite number of Demons, the Chaotic Evil fiends.

The plane is such a mess of chaos and upheaval that it doesn't even stay the same in basic state from time to time, which is another way of saying the writers can't keep it straight and change it whenever it's convenient. It's an infinite plane, like the others, but actually has an infinite number of different layers as well, meaning that the aforementioned changes might just be an examination of a different subset of layers. According to one faction in the Planescape setting it also specifically has 666 layers, because that's totally the same as infinite. Then again, it's one of the chaotic planes, so not making sense is probably the whole idea.

Notable Layers[edit]

Most of the layers are often described as containing wildly different inhospitable biomes, sometimes on the same layer side-by-side. All of them are full of the kind of Chaoticy-Evilly fuckery you'd expect, so none of them are great places for vacation homes. The named layers are also given numbers, but given that they are in no way consistently arranged in space, those numbers are meaningless and changed often. Officially, though, they are numbered in order of their discovery by mortals.

The Grand Abyss/Pazunia: 1st Layer

The Plane of Infinite Portals, and the way you get to any of the others. It's covered in giant sinkholes, each one a portal to another layer of the Abyss. This is also the layer that the River Styx flows through on its path from Pandemonium to Acheron. Iron fortresses on this layer are also where Demon Princes leave their bodies when they're busy roaming around the astral plane. Dozens of minor demon princes co rule this layer, though, officially, Pazuzu is in charge. The Grand Abyss is sometimes the 4th layer and Pazunia is the Styx shorelines.

Driller's Hives: 2nd Layer

This horrible place is one of the most unpleasantly inhospitable layers in all of the Abyss. It's not so much because of the indigenous fiendish insects who try to kill anything on sight, but because of how all visitors who enter risk contracting a horrible disease that causes the sufferer to break out in hatching insect eggs until the afflicted dies and decomposes into a mass of rot and insect eggs over the course of minutes. The addition of the giant, intelligent fiendish insect thralls of the ruler, Tharzax the Chattering Prince, help make the whole place a big, sentient shit-sprinkle-covered crapcake of NOPE.

The Forgotten Land: 3rd Layer

This is an almost endless landscape of empty ruins that suggest a once bustling city. No demons, other than the layer's Lord, Zzyczesiya The Ungrasped, master of malevolent ignorance and confusion, come here. The place was abandoned due to a catastrophe, for which Zzyczesiya has been traditionally blamed, and now, entering the layer causes any sentient being's mind, even those of demons and sapient undead, to fritter away like moist cotton candy, leaving visitors as catatonic and braindead. Constructs are immune to the effects, and persistent visitors often use golem stand-ins to explore this godawful place. Allegedly, Zzyczesiya destroyed all the original inhabitants by accident, 1st through 3rd edition claiming by changing the course of the River Styx, and was punished by imprisonment in the Wells of Darkness. Zzyczesiya would escape, and return to the Forgotten Land in order to use the power of this layer to unremember something really, really, really horrible (possibly a first draft of the script for Gigli).

The Grand Abyss: 4th Layer

What starts as a gaping chasm on the first layer is an infinitely deep pit where the walls are dotted with portals which connect to all of the other layers in the plane. Navigation is tricky because the only dimensions of relevance are vertical, so you need to either fly or be a patient climber. This place was created by the now-dead Lord, Asima The Unanticipated, who apparently died because she(?) didn't anticipate pissing off the Queen of Chaos enough to assassinate her. Now, Asima's corpse lies in her tomb, the Tumulus of Abhorrence, which is filled with treasure and secrets, and is guarded by her "seraph," a super-demon named "Guardian of the Gates" who pretty much super-kills anyone unlucky enough to encounter him. Guardian of the Gates periodically leaves his master's tomb to harass/super-kill schmucks in the Grand Abyss, as per his master's original orders: adventurers stupid enough to think that there are no other defenders of the Tumulus tend to die screaming.

Realm of a Million Eyes: 6th layer

Home of the Great Mother, princess of the Beholders. Presumably not a great place to be for anyone else, because no one's ever bothered to describe it in detail.

Phantom Plane: 7th layer

Ruled by Sess'lnnek the other god of the lizardfolk. He grew bored with the Tanar'ri's Blood War, withdrew and officially closed the layer off so that no one can enter without his explicit permission.

Skin-shedder: 8th layer

Ruled by Volisupula the Flensed Marquesse, lord of ostentatious finery. The layer itself makes you more evil the longer you stay there. Tieflings are immune.

Twelvetrees: 12th Layer

Originally intended as a neutral ground for fiends and celestials, until the Tanar'ri double crossed the Angels and imprisoned them into twelve trees that constantly scream distractingly and make normal conversation impossible, circled around a single altar. The tiny realm is strongly chaos & evil aligned, while anyone standing on the altar maximizes and extends any evil spells they cast.

Blood Tor: 13th Layer

Ruled by the Goddesses Beshaba and Umberlee, from the Forgotten Realms.

Pleroma/Death's Reward: 17th layer

Ruled by demon prince Abraxas the Unfathomable. He has a roosters head and a bunch of snakes for a lower body. He's big on magic and the occult. Diovengia is his city which houses some of the best libraries in the entire Abyss.

The Sixth Pyre: 21st layer

Ruled by Prince Kardum, the lord of Balors.

Ice Wastes: 23rd layer

Kostchtchie is the resident Demon Prince. An infinite expanse of jagged mountains, glaciers and frozen tundras. Kostchtchie commands a big army of frost giants which he used to further "conquer" his layer, when he isn't siccing them on other demon lords for laughing at him, or conquering other tribes of frost giants on the Prime Material Plane.

Sholo-Tovoth/ Fields of Consumption: 32rd layer

Ruled by Demon Prince Turaglas, The Ebon Maw, who was spawned directly from the Abyss. A 100% pure demon and therefore envied by Orcus and Demogorgon for this (Demogorgon was a creation of the Obyriths, while Orcus was a former mortal) who joined against him and imprisoned him for a while. His goal is to devour and destroy, he has spawned his own breed of demons, the turagathshee. The layer itself, tries to eat anyone that enters it that's not either Turaglas or one of his minions, with mouths and tongues popping up everywhere. Its filled with millions of insatiable demons.

Azzagrat: 45th, 46th, and 47th Layers

Ruled by Graz'zt, demon lord of tyrants, manipulation, and, unofficially, blatant nepotism. There's a salt river that connects all three layers. Zelatar is a big, shiny, evil pastiche of the Emerald City of Oz that stretches across the three layers. Relatively well-behaved demons, not that it's saying much, as all of Grazz't's minions know that Grazz't torturing them to death for a minor screw up is the least he can do to them. Not a terrible place for a party, assuming it's the right kind of party.

Phage Breeding Ground: 53rd Layer

Ruled by Urae-Naas, a "female" slaad Demon Princess so bloated with eggs she can't walk anymore and has to drag herself along on her long arms and enormous tongue. Comprised from the interiors of the ever-rotting organs of her former boyfriend, the slain Primordial Ramenos. Iconic local feature: screaming, insane humanoids sewn into the walls begging ceaselessly for help before she gets around to implanting her offspring in their bodies. Created in 4th edition, and probably lost with the change to 5th edition.

Torturous Truth: 57th layer

Ruled by Alvarez the Purging Duke, the head of the demonic Inquisition. His forces investigate the tanar'ri for any signs of lawful behavior. His torture is notorious throughout the Abyss.

The Demonweb Pits: 66th layer usually

The place where Lolth, the deity of the drow, and the rest of the drow pantheon, hangs out with her spiders. In 3e this was changed to be an entirely separate plane, though it's still connected to the Abyss.

Wells of Darkness: 73rd layer

A spa-cum-prison for some of the worst prisoners the plane could play host to. Jacuzzi tubs of black ink keep unspeakably powerful beings trapped beneath the surface, unable to get out, but perfectly conscious and able to communicate. It's amusing because the idea of an unbreakable prison on a chaotic plane constantly attracts break-in attempts by those who just want to prove otherwise.

Smargard: 74th layer

Merrshaulk rules here. He is the deity of the Yuan-ti snake men. Basically a nightmarish, evil, rainforest (one of several in the Abyss).

The Gates of Heaven: 77th layer

Actually not named ironically, it's apparently a gate to Celestia in the middle of a Chaotic Evil hell. Must be a really sturdy gate. Ruled by demon lords and brothers, Munkir and Nekir.

Abysm/The Gaping Maw: 88th layer

The realm of Demogorgon. Also known as "The Upside Down" thanks to Stranger Things. Pretty much a tropical nightmare, with demon- and demonic-disease-infested jungles and a roiling ocean. Dagon, his special friend and mentor, lives in his basement.

Shadowsea: 89th layer

Ruled by Dagon one of the few obyrith lords still part of the establishment. It's an underwater realm without a surface although it connects to the 88th. Filled with myriads of aquatic demons.

The Guttering Grove: 90th layer

Ruled by Ilsidahur, the Howling King, who's a bootlicker to Demogorgon. He leads the bar-lgura, these orangutan looking demons, as well as these winged gorilla looking guys. The Guttering Grove was recently subsumed into Abysm by Demogorgon as punishment for Ilsidahur screwing up an invasion of Arcadia, though Ilsidahur is apparently either too unaware, too uncaring, or too stupid to notice.

Demonwing: layer unknown

Apparently a giant, probably sentient, demonic flying ship that crashlanded in Abysm.

The Mind of Evil: 111st layer

Ruled by Prince Sch'theraqpasstt, the Serpent Reborn.

Thanatos: 113th layer

Its as much undead as demonic. Orcus's crib. He spends most of his time chilling here not doing things.

Slugbed: 128th layer

Lupercio the Baron of Sloth rules here. It's a tropical, mostly overcast realm filled with lush forests and coral reefs filled with all manner of demon gastropods. Because Lupercio is too busy spending most of his time sleeping, where his perpetually darkness-shrouded form is perpetually parasitized by shadow demons, and too spending what precious little waking hours he has maniacally doing something, the demon gastropods of Slugbed do not recognize his authority, and, instead, do their own thing, i.e., eating the scenery, each other, and intruders too stupid to understand the threat posed by demon gastropods until they get eaten. An army of angels has secretly constructed fortresses in the clouds above Slugbed, and eventually intend to use their fortresses here to stage attacks on the demons of the Abyss from.

Outcast's End: 137th layer

Ruled by Prince Azazel.

Lifebane: 142nd layer

Ruled by Chemosh, the god of undeath in Krynn.

Hollow's Heart: 176th layer

Ruled by Fraz-Urb'luu. Fraz-Urb'luu pissed off virtually all of the other demon lords by learning how to summon them in order to humiliate them in front of his sniveling minions. This lead to the demon lord being forced to take a sabbatical in the dungeons of Greyhawk and lesser Lords moved in, turning the places into a daemonic continent of crazy shit. Including a jungle of skin, where trees are hairs sprouting from the ground. A desert made of grains of clotted blood and a city shrouded in powerful illusions to make petitioners think everything is happy and safe, so the demons can take it away piece by piece.

The Rotting Plain: 181st layer

Ruled by Laogzed the god of the troglodyte. Here they archive everyone's browsing history, purchase's, and other personal information forever.

Vulgarea: 193th layer

Ruled by demon princess Eshebala the foxwoman goddess.

Slime Pits: 222nd layer

Juiblex, the Slime Lord, and Zuggtmoy, the Lady of Fungi rule here. Obviously a disgusting place. Sometimes the 528th layer.

Palpitatia: 241st layer

Grankhul and Skiggaret, the bugbear gods, rule here.

The Hidden Layer: 248th layer

Ruled by Demon Prince Eltab. Its a huge thunderstorm filled wasteland.

Feng-Tu: 300th layer

Ruled by Tou Mu and Lu Yueh, gods from the Chinese Mythology.

The Broken Scale: 333rd layer

Ruled by Hiddukel, the Dragonlance god of greed and treachery.

Fortress of Indifference: 348th layer

Rough terrain with fiery skies. An evil 200 foot tower is the main attraction. Its the home of outcasts, half-fiends, tieflings, etc. that turned their backs on the Blood War. Its particularly anarchic. Tapheon, a barely held together demon, tries to rule here but mostly goes around torturing random beings.

Arch of Eternity: 359th layer

Ruled by Eldanoth, the Prince of Crime. He once served under Orcus but left after Orcus was overthrown for a time, now his servants sabotage Orcus's plans. He's worshiped by criminals. The realm is, ironically, a huge, but finite plane of fire and snakes with a copper fortress at its center.

White Kingdom: 421rst layer

Ruled by the King of Ghouls, who, depending on the author, is either a toady of Orcus, a hostage-turned-minion of Yeenoghu, or an undead god who's free to do his own shit.

Seeping Woods: 422nd layer

Ruled by Yeenoghu, Demon Prince of Gnolls.

Ahriman-abad: 452nd layer

Ruled by Ahrimanes, the Chief of the Cacodaemons.

Mansion of the Rake: 487th layer

Ruled by Kanchelsis the god of vampires, born of the blood of the elven gods. His primary servants are vampires, drow, and the occasional crazy birds in his aviaries. His live-in boarders-turned-sort-of-minions are a trio of crazed blood fiends, Memnul, Dagrobard, and Vonce, who are so unpleasant, they apparently scare even Kanchelsis shitless.

Noisome Vale: 489th layer

Tarnhem is the official prince here though he's left for a while to go and hike Mt. Everest to find himself.

Torremor: 503rd layer

An aerie, built out of bridges, buildings and junk, floating in a void, and inhabited by vrock, chasme and other flying demons. Officially ruled by Pazuzu, though, he has, more or less, abandoned it to his ex-girlfriend, Lamashtu. For a while they were a disgustingly close couple, then Lamashtu betrayed him, and then they broke up when he ate out her eyes and impaled her on top of a tower at the very top of Torremor, where ever that is. He's more or less forgiven her, but still can not be assed to un-impale her.

Occipitus: 507th layer

Adimarchus, Prince of Madness, is the prince. He is a fallen Celestial and thus this layer is actually a fragmented piece of Celestia (the Seven Heavens)that fell with him. Demons avoid this layer all together, its filled with ruins and basins. Adimarchus fought a big fight against Graz'zt and lost at one point. He is imprisoned in Skullrot in Pandemonium, and has a split personality, one angelic, one demonic, which is why he's called "Prince of Madness."

Shatterstone: 524th layer

Ruled by Vaprak the ogre deity.

Vudra: 531st layer

Ruled by Shaktari, the queen of Mariliths.

Fleshforges: 558th layer

Ruled by Demon Prince Dwiergus, the Chrysalis Prince. He has control over the shaping of demonic races. Probably older than Pale Night. The Father of Demons in some ways. A mentor to Baphomet who taught him how to create new demons.

Prison of the Mad God: 586th layer

Ruled by Diinkarazan, one of the two gods of the derro.

Shubgottia, The Endless Maze: 600th layer

Ruled by Baphomet, Prince of Beasts. He lets Pale Night, a ghost looking entity, the mother of demons allegedly, have a castle here as well though she rarely does anything. Lyktion is his palace and at his Tower of Fucking Science he experiments and creates new demon breeds and such. He has vast armies of beastmen looking demons and is revered by the minotaurs. He is smart, savage, one of the top tier princes, and is not to be fucked with. He began as a mortal creature, either as a beast that lived as a man or a man that lived as a beast, and was cursed by the gods, though obviously he made the best of it.

Conflagratum: 601rst layer

Ruled by Alzrius, Lord of the Flowing Flame. He usually manifests himself as a pillar of fire and leads his legions to the burning of all bitches.

Zionyn: 663rd layer

Ruled by Obox-ob, Prince of Vermin, an ancient obyrith demon. He is allegedly the last surviving aspect of the old Prince of Demons. He hates the tanar'ri and wants to ethnically cleanse the Abyss from them, as well as overthrow Demogorgon.


The main race in the Abyss are demons. There are four different categories of demons: The Tanar'ri, the Obyriths, the Loumaras, and everything else. The Tanar'ri are the only ones who ever get shit accomplished, and are somehow the most numerous in spite of the fact that, again, there are an infinite number of demons. Most of the demon princes are Tanar'ri, though there are some Obyriths.

The petitioners in the Abyss are called manes, and become a low caste of Tanar'ri. If they survive for a very long time, they can be promoted up into the ranks of the not-worthless, and even to demon lords if they're cunning enough. This is how Orcus got his start.

Most of the chaotic evil deities live in the Abyss as well, for obvious reasons, including the aforementioned Great Mother and Lolth (depending on edition). Deities here are also called demon lords, because that's generally just a title and not any kind of useful disambiguation.

The Outer Planes of the Multiverse
Seven Mounting Heavens of Celestia Twin Paradises of Bytopia Blessed Fields of Elysium Wilderness of the Beastlands Olympian Glades of Arborea
Peaceable Kingdoms of Arcadia The Upper Planes Heroic Domains of Ysgard
Clockwork Nirvana of Mechanus Concordant Domain of the Outlands Ever-changing Chaos of Limbo
Infernal Battlefield of Acheron The Lower Planes Windswept Depths of Pandemonium
Nine Hells of Baator Bleak Eternity of Gehenna Gray Waste of Hades Tarterian Depths of Carceri Infinite Layers of the Abyss