[[quoteright:350:[[TabletopGame/MagicTheGathering http://static.tvtropes.org/pmwiki/pub/images/eldritch_abom_9170.png]]]]
[[caption-width-right:350:[[TheseAreThingsManWasNotMeantToKnow "Here, on the horizon, was everything Gideon did not know."]]]]

->''There was a darkness [[VoidBetweenTheWorlds outside reality]], they say -- a darkness full of ''things''. Hungry, ''nasty'' things with no shape or form, not as long as they were out there.''
-->-- '''Creator/KurtBusiek''', "Storms of the Heart," ''ComicBook/AstroCity''
%% Quote selected by thread consensus: http://tvtropes.org/pmwiki/posts.php?discussion=1327331003042025100&page=32#783
%% No more quotes here, please use the quotes page.

The Other. The Alien. The Inconceivable. The Eldritch Abomination is a type of creature defined by its disregard for the natural laws of the universe as we understand them. They are grotesque mockeries of reality [[YouCannotGraspTheTrueForm beyond comprehension]] whose disturbing otherness cannot be encompassed in any mortal tongue. Humans suffer BrownNote or GoMadFromTheRevelation effects just from witnessing their AlienGeometries. Reality itself [[RealityWarper warps]] around them. Any rules that they do follow are [[BlueAndOrangeMorality beyond our understanding]], as are what motives they might have for any of their actions.

Native to Creator/HPLovecraft's CosmicHorrorStory genre, the Eldritch Abomination has become a mainstay of {{horror}} and {{fantasy}} works, along with numerous others that [[{{Mythopoeia}} derive inspiration]] from Lovecraft. They are often used as a BiggerBad, MadGod, [[GodOfEvil Evil God]] or SealedEvilInACan. As they are defined by existing outside reality as we conceive it, most also come from somewhere beyond the stars or [[TimeAbyss before the dawn of time]] or [[EldritchLocation outside our universe]].

Physically, the Eldritch Abomination is only defined by seeming [[UncannyValley somehow “off”]], hinting at their [[YouCannotGraspTheTrueForm incomprehensible nature]]. They can range from {{humanoid|Abomination}} to {{animalistic|Abomination}} to [[AlienGeometries physically impossible]] to [[MindScrew inconceivably bizarre]]. However, common physical characteristics include similarities to [[BodyHorror internal organs]], [[FreudWasRight genitalia]], [[EverythingsSquishierWithCephalopods animals with tentacles]], or [[CelestialBody celestial bodies]].

Subtrope of OurMonstersAreDifferent and OurMonstersAreWeird. For Eldritch Abominations with a specific appearance, see HumanoidAbomination and AnimalisticAbomination. For specific storylines involving Eldritch Abominations, see the DidYouJustIndexCthulhu page. Compare to GodOfEvil, StarfishAliens and ParadoxPerson. Note that a monster being really powerful, weird or ugly is not, in and of itself, an example of this trope. The monster must break the established internal logic of the work.

Thanks to the nature of this trope, potential RealLife examples are very vague and questionable at best. So Administrivia/NoRealLifeExamplesPlease

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!!Example subpages
[[index]]
* EldritchAbomination/{{Anime}}
* EldritchAbomination/ComicBooks
* EldritchAbomination/FanFiction
* EldritchAbomination/{{Film}}
* EldritchAbomination/{{Literature}}
* EldritchAbomination/LiveActionTV
** EldritchAbomination/DoctorWho
* EldritchAbomination/{{Music}}
* EldritchAbomination/MythologyAndReligion
* EldritchAbomination/{{Roleplay}}
* EldritchAbomination/TabletopGames
* EldritchAbomination/VideoGames
** EldritchAbomination/{{Metroid}}
* EldritchAbomination/{{Webcomics}}
* EldritchAbomination/WebOriginal
* EldritchAbomination/WesternAnimation
[[/index]]
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[[foldercontrol]]

[[folder:Theatre]]
* The Boyg from ''Theatre/PeerGynt''. "Not dead, not living, slimy, foggy" is the only description given in-play. YouCanNotGraspTheTrueForm, and it is nigh invincible, because it always dodges you. And, according to the play - Peer Gynt gets [[MindRape mind raped]], and starts to act and think like it, ending up as a quite incoherent and fractured soul at the end of the play. ''Avoiding'' this entity would seem to be a good idea - but as the creature vins through avoiding, you end up playing its game.
[[/folder]]

[[folder:Amusement Parks]]
* The ''Nemesis'' roller coaster at Ride/AltonTowers amusement park in the UK (being the titular Nemesis). Nemesis comes from another dimension, a dimension beyond our imagination. There are theories, and then there is the legend... Beneath the ground at Alton Towers, something strange and horrible lurked: a creature put on the Earth 2 million years ago. The creature was disturbed during maintenance work on one of the other rides in Forbidden Valley. The creature, angry at being discovered, caused havoc, ripping up trees and buildings, sending them hurtling skyward. A security silence fell over Alton Towers as historians, archaeologists, and the Ministry of Defence nervously began some serious investigations. What they discovered was Nemesis. It had to be controlled - 250 tonnes of steel and 200 men pinned down Nemesis. The steel holding down the monster was twisted and bent into unusual shapes - the steel was the roller coaster track thrill seekers ride today - Nemesis. In a promotional comic released to advertise the ride, said creature had its own cult with its own TomeOfEldritchLore.
** Nemesis: Sub-terra. All we know is that it explores beneath the foundations of Nemesis... and many tentacles are in evidence...
[[/folder]]

[[folder:Gamebooks]]
* ''Literature/LoneWolf'': Several enemies the hero encounters could be considered as such.
** One of the creepier recurring enemies in the series is the Crypt Spawn. These are essentially swarms of human brains with batwings that, ironically enough, mindlessly attack anything in their path. They always appear in the presence of even greater evils, such as [[spoiler:a timeless and bodyless... ''thing'' in the Graveyard of the Ancients, two of the Darklords themselves, and the [[BigBad King of the Darkness, Naar]] himself. The thing in the Graveyard is [[FinalBossPreview implied to be Naar.]]]]
** The Akraa'Neonor summoned by Vonotar in Book 3. It even has the CombatTentacles.
** The Agtah on the astral plane of Daziarn boast twisted misshappen forms.
** The master, the horrific Chaos-master. Its appearance is that of a vaguely humanoid giant composed of the many parts of various animals... which keeps moving and changing shape unceasingly.
** The Kleasa from the ''World of Lone Wolf'' series. A Living Shadow from another dimension that eats souls like candy. Worse, the only way you can beat it is by setting it free, to reap evil elsewhere.
[[/folder]]

[[folder:Toys]]
* ''Franchise/{{Bionicle}}''
** Tren Krom exists as a ShoutOut to Lovecraft. However, he actually ''isn't'' an alien or ''other''; he was created by the Great Beings just like everything else in the Matoran world. Despite this, he's got the looks -- tentacles and all -- and causes insanity in those who look upon him. He was also one of the first things to exist in the Matoran world, managing it before Mata Nui, [[spoiler:who contains the entire Matoran world in his ''body'']], was activated.
-->'''Tren Krom:''' You think me an alien... an "other"... But I am of the substance of this universe, and I walked here long before you or even Mata Nui himself.\\
-- Federation of Fear
** [[BigBad Makuta]] was described like this as first - a kicking, screaming, lashing ''thing'' of pure malevolence. As a Makuta he has the ability to shape shift into any form and can create Rahkshi from his own flesh, which are considered as his sons. Then he got [[RetCon retconned]] into a MagnificentBastard [[TheChessmaster Chessmaster]] more akin to TheDevil than anything Lovecraftian, and Greg Farshtey himself has [[WordOfGod stated]] that he prefers Makuta this way.
** Annona, which has been described as a small, star-like thing with tentacles and a room chilling aura. [[DreamStealer It eats dreams.]]
** The first Rahi were tentacled monstrosities and other madness-inducing sea beasts. Akin to Tren Krom, they are actually naturally occurring in the Matoran world, but they are still unspeakably ancient and strange.
** The Energized Protodermis Entity was through excessive backstory rewrites and extensions turned from a one shot bad guy made of SentientPhlebotinum into this, when it was revealed to have been a mysterious cosmic being that resided in the core of Spherus Magna, and was in fact the engine that set the ''entire'' story into motion. It can take on many shapes, but its natural form is a silvery liquid.
* There are Cthulhu dolls. [[http://paizo.com/image/product/catalog/IMPTYV/IMPTYVHP004_360.jpeg D'aww. Great, ancient evil.]]
* ''Franchise/{{Transformers}}''
** Unicron, the [[OmnicidalManiac Great Devourer]], the [[AsLongAsThereIsEvil Chaos Bringer]], the PlanetEater. His total goal is the reduction of all existence in every reality to nothing. He empowers his Heralds, gifting them with fleets of vehicles, vast armies, supernatural powers, and [[ThisIsYourBrainOnEvil powerful insanity]]. Amongst his Heralds:
** [[WesternAnimation/TransformersPrime Megatronus]] [[Literature/TransformersExodus Prime]], one of the [[ThirteenIsUnlucky Original Thirteen]], a warrior of Primus charged with overseeing all Entropy in the multiverse who Unicron corrupted into betraying his brothers. [[Film/TransformersRevengeOfTheFallen Henceforth, his name would forever be "The Fallen".]]
** [[Anime/TransformersEnergon Scorponok]], HumongousMecha even by HumongousMecha standards and overseer of the Terrorcon hivemind.
** If Unicron counts, then so does Primus aka ''Cybertron itself''. In some versions of the backstory they are even [[CainAndAbel brothers]]. A rare example of a benevolent Eldritch Abomination.
[[/folder]]

[[folder:Web Animation]]
* In [[http://bogleech.com/animations.html The Fear Hole]], [[spoiler:the horrible thing that Antagonizer fights in [[http://scythemantis.deviantart.com/gallery/#/d1ovt1g Episode 7]]. It's never seen, but it's described with terms like "It's like a sewer had an abortion" and "It's like if cancer had leprosy", so you know it's bad.]]
** The thing in [[http://www.bogleech.com/flash/FEARHOLE4.html Episode 4]] who looks like Cthulhu and has the personality of a small, fairly innocent child, but [[spoiler:in the end turns out to be nasty]].
* The ''Webcomic/GarnetAndGure'' animated short, [[http://www.youtube.com/watch?v=cl1UKqSoD9g "Monsters are Dwelling"]] introduces us to the mythos of the "Horrible Gods", as described by a surprisingly charming green, eight-armed naked lady who is apparently going door to door to spread the Word of Kar-Goom.
* ''Webcomic/BoxerHockey'': [[http://www.youtube.com/watch?v=a6GEEi67atc In this cartoon]] Rittz appears to be tormented by one of these. Don't worry, it's funnier than it sounds.
* The Aeon Worm from ''WebAnimation/BravestWarriors'' is a powerful, giant creature from the [[AnotherDimension "see-through zone"]]. It is never shown in full on screen, but [[http://m1.behance.net/rendition/modules/91159573/disp/48fd3f24abfd24873bd7e8af33af02e9.jpg it's true appearance]] is very alien.
[[/folder]]
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HE COMES...