History EldritchAbomination / DoctorWho

* The Daleks believe the Doctor is one. They [[RedBaron call him]] [[NamesToRunAwayFromReallyFast "Bringer of Darkness", "The Oncoming Storm", "The Destroyer of the Worlds" and "The Predator of the Daleks"]]; he's the only being in the universe they outright ''[[TheDreaded fear]]'' (keep in mind they were deliberately engineered to feel nothing but hate for all things non-Dalek); and [[Recap/DoctorWhoS33E1AsylumOfTheDaleks "Asylum of the Daleks"]] shows that the few Daleks that survived encounters with him were driven almost ''[[GoMadFromTheRevelation permanently catatonic]]'' by the experience.

* The Solitract from "[[Recap/DoctorWhoS37E9ItTakesYouAway It Takes You Away]]" is a rare benevolent version. It's a sentient universe, the mere existence of which caused a RealityBreakingParadox that forced the main universe to eject it before reality could begin. Contact between the Solitract and the universe threatens both of them with collapse, causing the universe to create an anti-zone (a pocket dimension) just to keep them away from each other. Despite this, the Solitract is just lonely and only lures people in so it can have company. Once the Doctor shows it that both realities are threatened by this, it willingly lets her go.
* The Kasaavin from "[[Recap/DoctorWhoS38E1E2Spyfall Spyfall]]". Originating from AnotherDimension resembling [[EldritchLocation an endless forest of strange tube-like structures]], they seem completely alien to our universe; when one is asked about where they come from, its response is "Far beyond [...] your understanding". In the episode they appear as glowing lights in the approximate shape of human beings; however, they claim to have taken these forms to mock humanity, and that this is not their natural appearance. They also don't seem limited by the normal flow of time, as they seemingly infiltrate the entire timeline of humanity between the 19th and early 21st century ''[[MindScrew simultaneously]]'' and are able to effortlessly transport humans who come into contact with them between different time periods in that range.

* The Kasaavin from "[[Recap/DoctorWhoS38E1E2Spyfall]]". Originating from AnotherDimension resembling [[EldritchLocation an endless forest of strange tube-like structures]], they seem completely alien to our universe; when one is asked about where they come from, its response is "Far beyond [...] your understanding". In the episode they appear as glowing lights in the approximate shape of human beings; however, they claim to have taken these forms to mock humanity, and that this is not their natural appearance. They also don't seem limited by the normal flow of time, as they seemingly infiltrate the entire timeline of humanity between the 19th and early 21st century ''[[MindScrew simultaneously]]'' and are able to effortlessly transport humans who come into contact with them between different time periods in that range.

* The Kasaavin from "[[Recap/https://tvtropes.org/pmwiki/pmwiki.php/Recap/DoctorWhoS38E1E2Spyfall]]". Originating from AnotherDimension resembling [[EldritchLocation an endless forest of strange tube-like structures]], they seem completely alien to our universe; when one is asked about where they come from, its response is "Far beyond [...] your understanding". In the episode they appear as glowing lights in the approximate shape of human beings; however, they claim to have taken these forms to mock humanity, and that this is not their natural appearance. They also don't seem limited by the normal flow of time, as they seemingly infiltrate the entire timeline of humanity between the 19th and early 21st century ''[[MindScrew simultaneously]]'' and are able to effortlessly transport humans who come into contact with them between different time periods in that range.

* The Solitract from "[Recap/DoctorWhoS37E9ItTakesYouAway It Takes You Away]]" is a rare benevolent version. It's a sentient universe, the mere existence of which caused a RealityBreakingParadox that forced the main universe to eject it before reality could begin. Contact between the Solitract and the universe threatens both of them with collapse, causing the universe to create an anti-zone (a pocket dimension) just to keep them away from each other. Despite this, the Solitract is just lonely and only lures people in so it can have company. Once the Doctor shows it that both realities are threatened by this, it willingly lets her go.

* The Solitract from [[Recap/DoctorWhoS37E9ItTakesYouAway "It Takes You Away"]] is a rare benevolent version. It's a sentient universe, the mere existence of which caused a RealityBreakingParadox that forced the main universe to eject it before reality could begin. Contact between the Solitract and the universe threatens both of them with collapse, causing the universe to create an anti-zone (a pocket dimension) just to keep them away from each other. Despite this, the Solitract is just lonely and only lures people in so it can have company. Once the Doctor shows it that both realities are threatened by this, it willingly lets her go.

** Even a non-Dalek could make the argument the doctor themself is a HumanoidAbomination, albeit a ([[GoodIsNotNice usually]]) benevolent one. They're an impossibly ancient being with an understanding of the universe far outside any reasonable human, they single-handedly put their own species into a bizarre limbo stasis and was granted a potentially endless source of regenerations, and they have an ancient, unspoken true name.

* The Reapers from [[Recap/DoctorWhoS27E8FathersDay "Father's Day"]] may be an understated example, but they're still incredibly terrifying winged beings that are literally linked to "Time" itself and appear whenever a TemporalParadox happens like "''bacteria taking advantage of the wound''". It gets even worse when the Ninth states the '''only''' things that could stop them are appropriately enough the Time Lords but since they're out of the picture ([[InJoke heh]]) the Reapers are unstoppable and will [[ClockRoaches devour everything]] until the paradox is fixed. The Reapers are one of the very few foes that can deactivate [[TimeMachine the TARDIS]], and in the ''[[ComicBook/DoctorWhoFourDoctors Four Doctors]]'' comic, a Reaper smashes straight though the TARDIS like it's made of... well, ''wood''.

[[caption-width-right:350:Basically Manga/HellstarRemina made from HellFire.[[note]]And without the creepy tongue.[[/note]]]]

* The Nestene Consciousness, a formless entity powerful enough to control innumerable psychic links over many light years, capable of bringing life to any plastic which it uses to launch an invasion army. In the [[Franchise/DoctorWhoExpandedUniverse Expanded Universe]], it's one of the thousand children of [[Franchise/CthulhuMythos Shub-Niggurath]].

** [[TooDumbToLive And then the Time Lords released it to use for warfare]].

** [[spoiler:In the spinoff ''[[Series/Class2016 Class]]'', it's revealed the Angels are working with a group of humans preparing for an "arrival" involving what appears to be some sort of super-Angel, or Angel god, which seems to be ''even '''[[UpToEleven worse]]''''' than the usual kind.]]

* At one point, the Time Lords discovered a predator capable of feeding off the Fendahl - the Memeovore, or [[NamesToRunAwayFromReallyFast Devourer of Concept]], a malign void which could reach across time and space to feed on the stuff of thought and hungered to [[OmnicidalManiac devour all eternity]], from the Big Bang to the end of time. Those who looked at it saw an endless procession of grotesque images, as their mind struggled to comprehend the incomprehensible. In ''The Taking of Planet 5'', it escaped the time loop around Planet 5 as a result of the Time Lords' interference.

* There's a lot of evidence pointing towards the Time Lords being an entire ''species'' of this trope, given their incredible age and intelligence, how easily and often the very laws of reality are twisted like playthings by them (in Classic Who, they are easily capable of moving entire planets and monitor all the energy in the universe), and their inherent ability to perceive the universe in ways no other species can. Indeed, several of the conflicts between the Doctor and the Master play out a lot like battles in an endless war between two Eldritch Abominations, with the poor lesser beings caught between.

* The Daleks believe the Doctor is one. They [[RedBaron call him]] [[NamesToRunAwayFromReallyFast "Bringer of Darkness", "The Oncoming Storm", "The Destroyer of the Worlds" and "The Predator of the Daleks"]], he's the only being in the universe they outright ''[[TheDreaded fear]]'' (keep in mind they were deliberately engineered to feel nothing but hate for all things non-Dalek), and [[Recap/DoctorWhoS33E1AsylumOfTheDaleks "Asylum of the Daleks"]] shows that the few Daleks that survived encounters with him were driven almost ''[[GoMadFromTheRevelation permanently catatonic]]'' by the experience.

* At one point, the Time Lords deliberately created a predator capable of feeding off the Fendahl - the Memeovore, or [[NamesToRunAwayFromReallyFast Devourer of Concept]], a malign void which could reach across time and space to feed on the stuff of thought and hungered to [[OmnicidalManiac devour all eternity]], from the Big Bang to the end of time. Those who looked at it saw an endless procession of grotesque images, as their mind struggled to comprehend the incomprehensible. [[TooDumbToLive And then the Time Lords released it to use for warfare]].
**

* The eponymous creature in [[Recap/DoctorWhoS15E3ImageOfTheFendahl "Image of the Fendahl"]]; everyone who saw it died of fright, and that was only a crippled ghost of its true self 12 million years dead, which had been manipulating human lineages for millennia to ensure its release. In the Franchise/DoctorWhoExpandedUniverse, the Time Lords deliberately created a predator capable of feeding off the Fendahl - the Memeovore, or Devourer of Concept, a malign void which could reach across time and space to feed on the stuff of thought and hungered to [[OmnicidalManiac devour all eternity]], from the Big Bang to the end of time. Those who looked at it saw an endless procession of grotesque images, as their mind struggled to comprehend the incomprehensible. [[TooDumbToLive And then the Time Lords released it to use for warfare]].
** Not everyone who saw the Fendahl was lucky enough to die of fright. The Core transformed some of them into Fendahleen (the other components that, together with the Core, make up the Fendahl). The leader of the cultists who completed the process of creating the Core had worse luck than that. He was still alive, still human, and seeming still sane... but what he saw when he looked into the eyes of the Fendahl caused him to request the means to kill himself. How bad it was is evidenced by the Doctor giving him those means.

** The fanfic ''Fanfic/TheLastGreatTimeWar'' speculates upon the identity and nature of these things.

* The [[Recap/DoctorWhoS18E4StateOfDecay Great Vampires]], who fought the early Time Lords in the war that made the entire species get sick of violence, are gargantuan winged creatures who feast on ''planets'', and can only be killed by having their heart destroyed. But they are so massive that the Time Lords had to ''invent a new type of ship specifically for hunting them''. The only way the Doctor managed to best the one he encountered was by [[spoiler:[[ImpaledWithExtremePrejudice stabbing it with a rocket ship.]]]]

* The Reapers from [[Recap/DoctorWhoS27E8FathersDay "Father's Day"]] may be an understated example, but they're still incredibly terrifying winged beings that are literally linked to "Time" itself and appear whenever a TemporalParadox happens like "''bacteria taking advantage of the wound''". It gets even worse when the Ninth states the '''only''' things that could stop them are appropriately enough the Time Lords but since they're out of the picture ([[InJoke heh]]) the Reapers are unstoppable and will [[ClockRoaches devour everything]] until the paradox is fixed. The Reapers are one of the very few foes that can deactivate [[TimeMachine the Tardis]] and in the ''[[ComicBook/DoctorWhoFourDoctors Four Doctors]]'' comic a Reaper smashes straight though the Tardis like it's made of... well, ''wood''.

* There's a lot of evidence pointing towards the Time Lords being an entire ''species'' of this trope, given their incredible age and intelligence, how easily and often the very laws of reality are twisted like playthings by them (in Classic Who, they are easily capable of moving entire planets and monitor all the energy in the universe), and their inherent ability to perceive the universe in ways no other species can. Indeed, several of the conflicts between the Doctor and the Master play out a lot like battles in an endless war between two Eldritch Abominations, with the poor lesser beings caught between.
** DependingOnTheWriter, though. They are either this or SufficientlyAdvancedAliens.
** In the [[Franchise/DoctorWhoExpandedUniverse Expanded Universe]], fighting a war even worse than the one described in the TV show, Time Lords are combat bio-engineered to regenerate into the perfect soldier for any environment. In one case, this means turning into minor Cthulhu Mythos creatures. One becomes nothing less than '''a sentient timeline.'''
* Remember the Doctor's line from [[Recap/DoctorWhoS31E12ThePandoricaOpens "The Pandorica Opens"]] about the thing the Pandorica was designed to hold: "There was a goblin, or a trickster... or a warrior... A nameless, terrible thing, soaked in the blood of a billion galaxies. The most feared being in all the cosmos. And nothing could stop it or hold it, or reason with it. One day it would just drop out of the sky and tear down your world." [[spoiler:It's the Doctor himself.]]
* The Daleks believe the Doctor is one. They [[RedBaron call him]] [[NamesToRunAwayFromReallyFast "Bringer of Darkness", "The Oncoming Storm", "The Destroyer of the Worlds" and "The Predator of the Daleks"]], he's the only being in the universe they outright ''[[TheDreaded fear]]'' (keep in mind they were deliberately engineered to feel nothing but hate for all things non-Dalek), and [[Recap/DoctorWhoS33E1AsylumOfTheDaleks "Asylum of the Daleks"]] shows that the few Daleks that survived encounters with him were driven almost ''[[GoMadFromTheRevelation permanently catatonic]]'' by the experience.
* An assortment of Eldritch Abominations apparently rose from the midst of the Last Great Time War, such as the Nightmare Child, the Horde of Travesties, and the Couldhavebeen King with his armies of Meanwhiles and Never-weres. [[spoiler:The Time Lock around the War is there, in part, to stop these things from ever getting out.]]
** The fanfic ''Fanfic/TheLastGreatTimeWar'' speculates upon the identity and nature of these things.
* The Eternals, beings that live outside of time [[ExactlyWhatItSaysOnTheTin in eternity]], are immortal and use the imagination of people from our universe (they call us [[{{Muggles}} Ephemerals]]) to form realities. They can take ''anyone'' they want from any point in time and force them to do whatever they wish. They are not invincible, though; if somehow trapped in our reality, they are mortal and vulnerable.
* Again from the Expanded Universe, the Ancient Old Ones, beings from [[FishOutOfTemporalWater the previous universe]] that follow different physics, which allows them vast RealityWarper abilities; this can be inverted with beings from the ''next'' universe that have similar powers.
* The Nestene Consciousness, a formless entity powerful enough to control innumerable psychic links over many light years, capable of bringing life to any plastic which it uses to launch an invasion army. In the Franchise/DoctorWhoExpandedUniverse it's one of the thousand children of [[Franchise/CthulhuMythos Shub-Niggurath]].
* The Weeping Angels: impossibly fast creatures, [[NobodyHereButUsStatues indistinguishable]] from ordinary [[LivingStatue statues]] until you look away, able to transport people through time (because it's how they feed, off of all the "stolen moments"), and reproduce by projecting themselves through images, including images [[spoiler:inside a person's mind.]] On top of that, if they have enough power, they can [[spoiler:turn ordinary statues into more of their number]].
** [[spoiler:In the spinoff ''[[Series/Class2016 Class]]'', it's revealed the Angels are working with a group of humans preparing for an "arrival" involving what appears to be some sort of super-Angel, or Angel god, which seems to be ''even '''[[UpToEleven worse]]''''' than the usual kind.]]
* The Great Intelligence, a powerful, disembodied consciousness that whispers in people's minds for years [[spoiler:or even decades]] to turn them into willing puppets, and was infrequently encountered until [[Recap/DoctorWhoS33E13TheNameOfTheDoctor "The Name of the Doctor"]] — in which it makes an almost-successful attempt to destroy the Doctor's entire life back to even before he ever left Gallifrey. [[Recap/DoctorWhoS5E5TheWebOfFear Before that]], it attempted to steal all of the Doctor's life experiences and memories and mentally revert him back to a younger age. It manifested bizarre powers and whenever it deigned to take physical form, it could BodySurf if the body it was in was damaged. Before [[Recap/DoctorWho2012CSTheSnowmen "The Snowmen"]] provided an independent origin for the Intelligence (originally the reflection of a disturbed child's psyche in a [[AppliedPhlebotinum snow-like, chemical telepathic field]], improved upon by that same child-turned-MadScientist until it was unfathomably greater and more powerful than its creator could even comprehend, let alone intend), the [[Franchise/DoctorWhoExpandedUniverse Expanded Universe]] identified the Great Intelligence as an alias of [[spoiler:[[Franchise/CthulhuMythos Yog-Sothoth]]]], and it is ''not'' hard to see why.
* Borusa and the other Time Lords Rassilon experimented on in ''[[Recap/NewSeriesAdventuresEnginesOfWar Engines of War]]''. Their timelines have been retro-engineered, meaning they are in a constant state of flux between the past and possible future regenerations. They can see all possible timelines, and when Borusa is in the Eye of Tantalus, he is able to pull on threads of possibility to bring new timelines into being; [[spoiler:similar to Bad Wolf he is able to wipe all traces of the Daleks from the Tantalus Eye]].
* The TARDIS itself is a ''[[GeniusLoci fully sentient]] EldritchLocation''. BiggerOnTheInside, filled with endless wonder and terror and secrets the Doctor doesn't let even their closest friends in on, able to go anywhere in time and space — and ''very much'' alive and in more control of its movements and every single square centimeter of its as-big-as-it-wants-to-be interior than whoever is at the wheel. The [[Franchise/DoctorWhoExpandedUniverse Expanded Universe]] says the TARDIS is a full-on EldritchAbomination, which considerately disguises itself to avoid reducing the passengers to gibbering wrecks. As a living shape-shifting creature, at home in extra-dimensional spaces, with a mind that even the Doctor deems unfathomably alien, it's certainly a good candidate. A minor story comments on the TARDIS' mind as completely and utterly [[spoiler:'''pandimensional''']]. When a salvage crew captures it and tries to remove parts, we find out what it means to make the supreme mistake of pissing her off. Basically... ''don't''.
-->'''Eleventh Doctor:''' Don't touch a thing. The TARDIS will get huffy if you mess.

* The Animus from [[Recap/DoctorWhoS2E5TheWebPlanet "The Web Planet"]] can generate a fungus-like substance to make an organic palace for itself, as well as possess any living creature that is in contact with gold. In the Franchise/DoctorWhoExpandedUniverse, it's actually Lloigor, one of the Great Old Ones from the Franchise/CthulhuMythos.

* The Solitract from ''It Takes You Away'' is a rare benevolent version. It's a sentient universe, the mere existence of which caused a RealityBreakingParadox that forced the main universe to eject it before reality could begin. Contact between the Solitract and the universe threatens both of them with collapse, causing the universe to create an anti-zone (a pocket dimension) just to keep them away from each other. Despite this, the Solitract is just lonely and only lures people in so it can have company. Once the Doctor shows it that both realities are threatened by this, it willingly lets her go.
* ''AudioPlay/BigFinishDoctorWho'':
** Anti-Time essentially causes this. It is spread by the Neverpeople, people who have experienced RetGone and are left as ghosts who devour people's time. Then there is the personification of Anti-Time, [[TheDreaded Zagreus]], something which even Death fears:
--->Zagreus seeks the hero's ship\\

** The Sound Creature in "[[Recap/BigFinishDoctorWho052Scherzo Scherzo]]" is a(n eventually) sentient [[EnergyBeing being]] born of the sounds made by the Doctor, his companion Charley, and the TARDIS in a previously soundless environment. It regards them as its parents [[SelfMadeOrphan and it expects them to die for its sake]].
** The monsters imprisoned in the [[NamesToRunAwayFromReallyFast Axis of Insanity]], a collection of [[EldritchLocation doomed, collapsing timelines]], from the Big Finish audio of the same name. The Keeper of the Axis ''hates'' the Time Lords, mostly because it's their meddling that made the Axis necessary in the first place and which keeps adding more broken timelines to it.

-->Zagreus seeks the hero's ship\\

** Even worse, the Doctor has no knowledge of the creature. He doesn't know where it came from, how long it was there, what it is, if it's the only one of its kind in the universe, or how to beat it. It's one of the very few times in the entire decades long history of the show that something like this has utterly stumped and terrified The Doctor. [[spoiler: The Hostess ultimately sacrifices herself to push the Possessed Sky out of the carriage. The Doctor remains shaken, and says the planet should be left alone, suggesting that either he doesn't believe it's dead, or he believes '''''[[ParanoiaFuel there's more than one of them]]'''''.]]
-->'''The Doctor:''' Let this planet keep on turning around an xtonic star. In silence.

* The Great Intelligence, a powerful, disembodied consciousness that whispers in people's minds for years [[spoiler:or even decades]] to turn them into willing puppets, and was infrequently encountered until "[[Recap/DoctorWhoS33E13TheNameOfTheDoctor The Name of the Doctor]]" — in which it makes an almost-successful attempt to destroy the Doctor's entire life back to even before he ever left Gallifrey. [[Recap/DoctorWhoS5E5TheWebOfFear Before that]], it attempted to steal all of the Doctor's life experiences and memories and mentally revert him back to a younger age. It manifested bizarre powers and whenever it deigned to take physical form, it could BodySurf if the body it was in was damaged. Before "[[Recap/DoctorWho2012CSTheSnowmen The Snowmen]]" provided an independent origin for the Intelligence (originally the reflection of a disturbed child's psyche in a [[AppliedPhlebotinum snow-like, chemical telepathic field]], improved upon by that same child-turned-MadScientist until it was unfathomably greater and more powerful than its creator could even comprehend, let alone intend), the Franchise/DoctorWhoExpandedUniverse identified the Great Intelligence as an alias of [[spoiler:[[Franchise/CthulhuMythos Yog-Sothoth]]]], and it is ''not'' hard to see why.
* Borusa and the other Time Lords Rassilon experimented on in "[[Recap/NewSeriesAdventuresEnginesOfWar Engines of War]]". Their timelines have been retro-engineered, meaning they are in a constant state of flux between the past and possible future regenerations. They can see all possible timelines, and when Borusa is in the Eye of Tantalus, he is able to pull on threads of possibility to bring new timelines into being; [[spoiler:similar to Bad Wolf he is able to wipe all traces of the Daleks from the Tantalus Eye]].

* The Great Intelligence, a powerful, disembodied consciousness that whispers in people's minds for years [[spoiler:or even decades]] to turn them into willing puppets, and was infrequently encountered until [[Recap/DoctorWhoS33E13TheNameOfTheDoctor "The Name of the Doctor"]] — in which it makes an almost-successful attempt to destroy the Doctor's entire life back to even before he ever left Gallifrey. [[Recap/DoctorWhoS5E5TheWebOfFear Before that]], it attempted to steal all of the Doctor's life experiences and memories and mentally revert him back to a younger age. It manifested bizarre powers and whenever it deigned to take physical form, it could BodySurf if the body it was in was damaged. Before [[Recap/DoctorWho2012CSTheSnowmen "The Snowmen"]] provided an independent origin for the Intelligence (originally the reflection of a disturbed child's psyche in a [[AppliedPhlebotinum snow-like, chemical telepathic field]], improved upon by that same child-turned-MadScientist until it was unfathomably greater and more powerful than its creator could even comprehend, let alone intend), the Franchise/DoctorWhoExpandedUniverse identified the Great Intelligence as an alias of [[spoiler:[[Franchise/CthulhuMythos Yog-Sothoth]]]], and it is ''not'' hard to see why.
* Borusa and the other Time Lords Rassilon experimented on in [[Recap/NewSeriesAdventuresEnginesOfWar "Engines of War"]]. Their timelines have been retro-engineered, meaning they are in a constant state of flux between the past and possible future regenerations. They can see all possible timelines and when Borusa is in the Eye of Tantalus he is able to pull on threads of possibility to bring new timelines into being; [[spoiler:similar to Bad Wolf he is able to wipe all traces of the Daleks from the Tantalus Eye.]]
* The TARDIS itself is a ''[[GeniusLoci fully sentient]] EldritchLocation.'' BiggerOnTheInside, filled with endless wonder and terror and secrets the Doctor doesn't let even his closest friends in on, able to go anywhere in time and space — and ''very much'' alive and in more control of its movements and every single square centimeter of its as-big-as-it-wants-to-be interior than whoever is at the wheel. When a salvage crew captured it and tried to remove parts, we find out what it means to make the supreme mistake of pissing her off. Basically... ''don't.''

** The [[Franchise/DoctorWhoExpandedUniverse Expanded Universe]] says the TARDIS is a full-on Eldritch Abomination, which considerately disguises itself to avoid reducing the passengers to gibbering wrecks. As a living shape-shifting creature, at home in extra-dimensional spaces, with a mind even the Doctor deems unfathomably alien, it's certainly a good candidate. A minor story comments on the TARDIS' mind as completely and utterly [[spoiler:'''pandimensional''']].
* ''AudioPlay/BigFinishDoctorWho'': Anti-Time essentially causes this. It is spread by the Neverpeople, people who have experienced RetGone, and are left as ghosts who devour people's time. Then there is the personification of Anti-Time, [[TheDreaded Zagreus]], something which even Death fears:

** The Sound Creature in [[Recap/BigFinishDoctorWho052Scherzo Scherzo]] is a(n eventually) sentient [[EnergyBeing being]] born of the sounds made by the Doctor, his companion Charley and the TARDIS in a previously soundless environment. It regards them as its parents [[SelfMadeOrphan and it expects them to die for its sake]].

* "Ancient lights", {{Hive Queen}}s to at least part of the universe that existed before the Big Bang. They are capable of using astrology to brainwash others and give them tremendous powers because the universe they originated from used astrology as a science. The fact that the physics of the current universe does not work according to those rules does not matter, they can ignore that and use it regardless.
* ''[[ExactlyWhatItSaysOnTheTin The Abomination]]''. In this case a BrownNote painting and not a flesh and blood being. [[spoiler:Unfortunately, it was painted with psychically active ink, which was capable of [[ArtInitiatesLife bringing the creature depicted]] to life. [[GoneHorriblyRight Oops]].]]

* The Great Intelligence, a powerful, disembodied consciousness that whispers in people's minds for years [[spoiler:or even decades]] to turn them into willing puppets, and was infrequently encountered until "[[Recap/DoctorWhoS33E13TheNameOfTheDoctor The Name of the Doctor]]" -- in which it makes an almost-successful attempt to destroy the Doctor's entire life back to even before he ever left Gallifrey. [[Recap/DoctorWhoS5E5TheWebOfFear Before that]], it attempted to steal all of the Doctor's life experiences and memories and mentally revert him back to a younger age. It manifested bizarre powers and whenever it deigned to take physical form, it could BodySurf if the body it was in was damaged. Before the 2010's episode "The Snowmen" provided an independent origin for the Intelligence (originally the reflection of a disturbed child's psyche in a [[AppliedPhlebotinum snow-like, chemical telepathic field]], improved upon by that same child-turned-MadScientist until it was unfathomably greater and more powerful than its creator could even comprehend, let alone intend), the Franchise/DoctorWhoExpandedUniverse identified the Great Intelligence as an alias of [[spoiler:[[Franchise/CthulhuMythos Yog-Sothoth]]]], and it is ''not'' hard to see why.

* The TARDIS itself is a ''[[GeniusLoci fully sentient]] EldritchLocation.'' BiggerOnTheInside, filled with endless wonder and terror and secrets the Doctor doesn't let even his closest friends in on, able to go anywhere in time and space - and ''very much'' alive and in more control of its movements and every single square centimeter of its as-big-as-it-wants-to-be interior than whoever is at the wheel. When a salvage crew captured it and tried to remove parts, we find out what it means to make the supreme mistake of pissing her off. Basically... ''don't.''
-->'''Eleventh Doctor:''' "Don't touch a thing. The TARDIS will get huffy if you mess."
** The Franchise/DoctorWhoExpandedUniverse says the TARDIS is a full-on Eldritch Abomination, which considerately disguises itself to avoid reducing the passengers to gibbering wrecks. As a living shape-shifting creature, at home in extra-dimensional spaces, with a mind even the Doctor deems unfathomably alien, it's certainly a good candidate. A minor story comments on the TARDIS' mind as completely and utterly [[spoiler:'''pandimensional''']].

* The Great Intelligence, a powerful, disembodied consciousness that whispers in people's minds for years [[spoiler:or even decades]] to turn them into willing puppets, and was infrequently encountered until [[Recap/DoctorWhoS33E13TheNameOfTheDoctor "The Name of the Doctor"]] -- in which it makes an almost successful attempt to destroy the Doctor's entire life back to even before he ever left Gallifrey. [[Recap/DoctorWhoS5E5TheWebOfFear Before that,]] it attempted to steal all of the Doctor's life experiences and memories and mentally revert him back to a younger age. It manifested bizarre powers and whenever it deigned to take physical form, it could BodySurf if the body it was in was damaged. Before the 2010's episode ''The Snowmen'' provided an independent origin for the Intelligence (originally the reflection of a disturbed child's psyche in a [[AppliedPhlebotinum snow-like, chemical telepathic field]], improved upon by that same child-turned-MadScientist until it is unfathomably greater and more powerful than its creator could even comprehend, let alone itend), the Franchise/DoctorWhoExpandedUniverse had identified the Great Intelligence as an alias of [[spoiler:[[Franchise/CthulhuMythos Yog-Sothoth]],]] and it is ''not'' hard to see why.

* The Great Intelligence, a powerful, disembodied consciousness that whispers in people's minds for years [[spoiler:or even decades]] to turn them into willing puppets, and was infrequently encountered until [[Recap/DoctorWhoS33E13TheNameOfTheDoctor "The Name of the Doctor"]] -- in which it makes an almost successful attempt to destroy the Doctor's entire life back to even before he ever left Gallifrey. [[Recap/DoctorWhoS5E5TheWebOfFear Before that,]] it attempted to steal all of the Doctor's life experiences and memories and mentally revert him back to a younger age. It manifested bizarre powers and whenever it deigned to take physical form, it could BodySurf if the body it was in was damaged. The Franchise/DoctorWhoExpandedUniverse identifies the Great Intelligence as an alias of [[spoiler:[[Franchise/CthulhuMythos Yog-Sothoth]].]]

* The Reapers from [[Recap/DoctorWhoS27E8FathersDay "Father's Day"]] are an understated but still incredibly terrifying winged beings, that are literally linked to "Time" itself and appear whenever TemporalParadox happens like "''bacteria taking advantage of the wound''". It gets even worse when the Ninth states the '''only''' things that could stop them are appropriately enough the Time Lords but since they're out of the picture ([[InJoke heh]]) the Reapers are unstoppable and will [[ClockRoaches devour everything]] until the paradox is fixed. The Reapers are one of the very few foes that can deactivate [[TimeMachine the Tardis]] and in the ''Four Doctors'' comic a Reaper smashes straight though the Tardis like it's made of... well ''wood'' .

* [[Recap/DoctorWho50thASTheDayOfTheDoctor The Moment]] is one of the more understated ones, and yet probably the most powerful in the series. Never mind that it's a weapon with the ability to destroy worlds, and a piece of mechanics complex enough to develop a conscience,; throughout its only appearance it repeatedly and calmly punches holes in the Time Lock around the Time War. As a reminder, this is the same barrier that's strong enough to (mostly) seamlessly contain the full might of the Daleks, Time Lords, and every other EldritchAbomination they brought with them. For her part, she spends her time [[WhatTheHellHero convincing her users not to employ her for her designed purpose]] of immense destruction [[AIIsACrapShoot because she finds the whole idea just terrible]].
* The creatures in [[Recap/DoctorWhoS34E9Flatline "Flatline"]], dubbed the "Boneless" by the Doctor, two dimensional beings from outside the known universe. Among other things they drained dimensional energy from the TARDIS, and the Doctor realized that they apparently tried to learn about the three dimensional universe. He tried to find a way to communicate with them, something that proved difficult since even the TARDIS couldn't translate their language at first, and their sense of space were so alien that even the TARDIS was confused. [[HumanoidAbomination Eventually they gained three dimensional forms, heavily distorted and warped, looking like distorted reflections of human beings, their movements jerky and clumsy, constantly shifting in shape and sometimes appearing as if they couldn't keep their three dimensional form together.]] They can pull you into their 2D state as well, making ''dissecting'' you as easy as turning the page in an anatomy book; a pattern on the wall turned out to be one unfortunate character's ''entire nervous system.'' The Creator/StevenMoffat era is ''really'' good at creating these.

* The Reapers from [[Recap/DoctorWhoS27E8FathersDay "Father's Day"]] are an understated but still incredibly terrifying winged abominations, that are literally linked to "Time" itself and appear whenever TemporalParadox happens like "''bacteria taking advantage of the wound''". It gets even worse when the Ninth states the '''only''' things that could stop them are appropriately enough the Time Lords but since they're out of the picture ([[InJoke heh]]) the Reapers are unstoppable and will devour everything until the paradox is fixed. The Reapers are one of the very few foes that can deactivate [[TimeMachine the Tardis]] and in the ''Four Doctors'' comic a Reaper smashes straight though the Tardis like it's made of... well ''wood'' .

** Even worse, the Doctor has no knowledge of the creature. He doesn't know where it came from, how long it was there, what it is, if it's the only one of its kind in the universe, or how to beat it. It's one of the very few times in the entire decades long history of the show that something like this has utterly stumped and terrified The Doctor. [[spoiler: The Hostess ultimately sacrifices herself to push the Possessed Sky out of the carriage. The Doctor remains shaken, and says the planet should be left alone suggesting that he doesn't believe it's dead.]]

* [[Recap/DoctorWho50thASTheDayOfTheDoctor The Moment]] is one of the more understated ones, and yet probably the most powerful in the series. Never mind that it's a weapon with the ability to destroy worlds, and a piece of mechanics complex enough to develop a conscience, throughout its only appearance it repeatedly and calmly punches holes in the Time Lock around the Time War. As a reminder, this is the same barrier that's strong enough to (mostly) seamlessly contain the full might of the Daleks, Time Lords, and every other EldritchAbomination they brought with them. For her part, she spends her time [[WhatTheHellHero convincing her users not to employ her for her designed purpose]] of immense destruction [[AIIsACrapShoot because she finds the whole idea just terrible]].