History EldritchAbomination / WesternAnimation

** [[{{YMMV}} Arguably]], the Foggy Swamp banyan tree, especially when you find out that [[GeniusLoci it's]] [[ThatsNoMoon sentient]]. Imagine if ''[[HighOctaneNightmareFuel that thing uprooted itself and started attacking people]]''. You'd need an ''army'' of Lion Turtles to take it out.

** The Lich, my friend. Just...[[HighOctaneNightmareFuel The Lich...]]

*** The dish sounds mind-breakingly horrible...''mango chutney''? NoJustNo.

* Recent {{Retcon}}s to the ''{{Transformers}}'' backstory have turned the [[PlanetEater planet-eating]] Unicron into an EldritchAbomination, not only giving him the power to move between dimensions, but also insinuating that a piece of his dark soul inhabits all of the Transformers since the beginning, meaning that any one of them could turn into a servant to his apocalyptic hunger.

* The Ancient Ones from ''HotWheelsBattleForce5'', beings heavily implied to be the {{Big Bad}}s of season 3, are shaping up to be this. They're an ancient evil that predates the Sentients (who ''created the multiverse''), whose mere awakening begins to spred darkness throughout the multiverse. Rawkus, a being whose purpose for existing is to maintain TheBalanceBetweenGoodAndEvil, considers them evil enough to be firmly on the side of the Battle Force 5 against them. What we've seen of their appearance, shadowy figures during Rawkus' monolog about them, is even more disconcerning. [[ArsonMurderAndJaywalking Not to mention that their name seems to be a]] ShoutOut to the Old Ones from Lovecraft's works.

*The Santa suit from InvaderZim can be considered one.

* ''WesternAnimation/AdventureTime.'' [[CuteMonsterGirl Marciline's]] dad.[[NightmareFuel Need]] [[CompleteMonster I]] say more?
** The Lich, my friend. Just...[[HighOctaneNightmareFuel The Lich...]]

* ''AdventureTime.'' [[CuteMonsterGirl Marciline's]] dad.[[NightmareFuel Need]] [[CompleteMonster I]] say more?

* [[MyLittlePonyFriendshipIsMagic Pinkie]] [[RealityWarper Pie]].

* ''AdventureTime.'' [[CuteMonsterGirl Marciline's]] dad.[[NightmareFuel Need]] [[CompleteMonster I]] say more?

** Keep in mind that it is the only, truly, supernatural creature they have met.

* Lucubra, the main antagonist of the ''Ben10UltimateAlien'' episode "The Creature From Beyond" [[spoiler:and possible BigBad of the season if Paradox's warnings are any indication]]. This extradimensional horror boasts SuperStrength, NighInvulnerability, FrickinLaserBeams, and the power to devour a person's thoughts with MindControl as a bonus...and that might just be the tip of the iceberg.

* Lucubra, the main antagonist of the ''Ben10UltimateAlien'' episode "The Creature From Beyond" [[spoiler:and possible BigBad of the season if Paradox's warnings are any indication]]. This extradimensional horror boasts SuperStrength, NighInvulnerability, FrikkinLaserBeams, and the power to devour a person's thoughts with MindControl as a bonus...and that might just be the tip of the iceberg.

* Lucubra, the main antagonist of the ''Ben10UltimateAlien'' episode "The Creature From Beyond" [[spoiler:and possible BigBad of the season if Paradox's warnings are any indication]]. This extradimensional horror boasts SuperStrength, NighInvulnerability, and the power to devour a person's thoughts with MindControl as a bonus...and that might just be the tip of the iceberg.

* [[MyLittlePonyFriendshipIsMagic Pinkie]] [[RealityWarper Pie]].

* The MonsterOfTheWeek in ''RegularShow'' tends to be that kind of thing; not that surprising considering it's from the same mind that brought us ''{{Flapjack}}'' and its attendant NightmareFuel.

*The Santa suit from invader zim can be considered one

* ''SuperRobotMonkeyTeamHyperforceGo'' has several of them, like a flying multiple-eyed thing that turned anybody who looked at it into bloodthirsty zombie among many others. And of course Skeleton King's [[spoiler:master]] was fricking big earthworm-like thing that was much larger than anything else our blood thirsty heroes ever meet. And It was only a part of its original body, God knows how big.

* There's at least one in ''{{Metalocalypse}}''; thing is, we don't know whether it's someone in the band, the whole band, or Selatcia...

* In [[http://tvtropes.org/pmwiki/pmwiki.php/Series/DungeonsAndDragons Dungeons and Dragons]], the episode "The Dungeon at the Heart of Dawn", we meet Venger's boss, and Dungeon Master warns that before he attacks, he will reveal his face, and that [[MindRape the children should not look upon it.]]

* The Darkness from the ''FairlyOddParents'' "Wishology" special, until [[spoiler: it's revealed to be a harmless [[TheBooRadley Boo Radley]]]].

** The Nergals also have obvious traits of this.

** [[{{YMMV}} Arguably]], the Foggy Swamp banyan tree, especially when you find out that [[GeniusLoci it's]] [[ThatsNoMoon sentient]]. Imagine if ''[[HighOctaneNightmareFuel that thing uprooted itself and started attacking people]]''. You'd need an ''army'' of Lion Turtles to take out that thing.

* The Darkness from the ''FairlyOddParents'' "Wishology" special, until [[spoiler: it's revealed to be a harmless [[TheBooRadley Boo Radley]]]].

** It has also been revealed that he does ''not'' [[PlanetEater eat planets]] for sustenance- he gets ''that'' from [[AsLongAsThereIsEvil hatred and strife]]. No, he eats planets because he's offended by existence. All of it. So he's trying to eat it. All of it. Every dimension.

** And, by AlternativeCharacterInterpretation, [[spoiler: the Lion Turtle is a [[DarkIsNotEvil good]] version of this. But as of right now, he's just a CrowningMomentOfAwesome. He's TurtlePower, TurtleIsland, and DidWeJustHaveTeaWithCthulhu, all rolled into one.]]

** And, by AlternateCharacterInterpretation, [[spoiler: the Lion Turtle. But as of right now, he's just a CrowningMomentOfAwesome. He's TurtlePower, TurtleIsland, and DidWeJustHaveTeaWithCthulhu, all rolled into one.]]