History NightmareFuel / Pokedex

* Mandibuzz, a female-only Pokémon. She is aggressive and uses her prey's bones to decorate her body and make her nest. She's also the natural predatore of the tragic Cubone and attacks it once she hears it cry. She is also based off a vulture.

** Gengar, who appears at every full moon and scares people by pretending to be their shadow. Gen VII took its creepiness UpToEleven, with its ''Moon'' Pokédex entry saying that it outright wants to kill humans. The reason? It wants one [[IJustWantToHaveFriends as a traveling companion]] because ''[[WasOnceAMan it was once human itself]]'', which seems to confirm that the Gastly line are literally the ghosts of humans instead of just ghost-like monsters. Its ''Sun'' and ''Ultra Moon'' entries, on the other hand, are pretty much pure ParanoiaFuel.

* [[HeadlessHorseman Blacephalon]] is Nightmare Fuel taken ''[[UpToEleven up to eleven]]'' [[MonsterClown for anyone with a fear of clowns]].

* Gothorita, the Pokémon that is known far and wide in Unova for hypnotizing people. Sometimes those people are never seen again. Its Dream World Ability is [[YouWillNotEvadeMe Shadow Tag]] and its pre-evolved form is known for obsessively staring at people. The final evolution in the line, Gothitelle, manages to be creepy in a [[AdultFear different]], [[TearJerker heartbreaking]] way, as it's perfectly capable of determining someone's lifespan through the stars. The ''B2&W2'' entry specifically notes that it starts crying once it discovers how long its Trainer has. The ''Shield'' entry states that a criminal disappeared (and was never seen again) after a Gothitelle showed him his fate.

* Gourgeist, the evolution of Pumpkaboo. Its ''Y'' dex entry states [[{{Sadist}} it sings joyfully while watching its prey suffer]]. In its ''Sword'' and ''Shield'' dex entries, it tries to trick people to send them to the afterlife, and their choices of prey are based on their size. The small ones [[AdultFear pose as children]] to prey on adults, the large ones are known to [[WouldHurtAChild prey on children by pretending to be adults]], while the supersized ones aren't picky at all about the ages of their prey.

** On a less dramatic note, Mega Kangaskhan's Sun entry is "Mega Kangaskhan's strength derives from the mother's happiness about her child's growth. Watching it grow up keeps her spirits high." The ''Moon'' entry is "Thanks to Mega Evolution, its child grows. But as the child is good only at fighting and nothing else, its mother [[AdultFear feels uneasy about its future]]."

* Zorua's ''Ultra Moon'' Pokédex entry states they sometimes switch places with ''children''. [[AdultFear What happened to the children they're impersonating?]] And just to make the [[ParanoiaFuel paranoia factor]] even worse, recall that they're found at the ''Trainers' School''...

* Even ignoring the hunter/prey relationship entries, a large number of the Pokédex entries are significantly darker than normal mentioning not just how they kill other Pokémon, but even some humans as well. The otherwise adorable Bewear's entry states that many trainers have been killed from their Bewear hugging them and accidentally snapping their spines. Mimikyu's states that anyone who has seen its true form has died from shock. Wishiwashi's entry states that, even though it's mostly to keep predators from trying to eat them, their School Form is so dangerous that even Gyarados would flee for their lives at the sight of it. Driftloon's entry states that if its body is ever pierced, its very soul is destroyed in a painful explosion.

* Similar to the above, many Mega Evolutions' Pokédex entries are horrifying, either implying, or outright stating, that you've turned your beloved Pokémon into a beast that knows nothing but the thrill of the fight and/or suffers from injurious levels of PowerIncontinence.
** Mega Garchomp's description reveals that [[BodyHorror its arms and wings melt to form its scythe arms.]]

** There's also Mega Lucario whose fighting style is summed up as heartless. Remember that to get Lucario, you need Riolu to have [[ThePowerOfFriendship max happiness.]] This behavior has been demonstrated with Korrina's Lucario in the Pokémon anime.

** Alakazam is the embodiment of SquishyWizard. In fact, the Pokédex entries for Mega Alakazam confirm that it moves exclusively through telekinetic power because ''its muscles have completely atrophied''.

* Giratina was banished to [[{{Hell}} another dimension]] for its extremely violent nature by [[{{God}} Arceus.]] During its time in that dimension, its presence reformed the dimension into the [[MirrorUniverse Distortion/Reverse World.]] In its home world, Giratina "silently gazed upon the old world" through [[ParanoiaFuel reflective objects, such as mirrors and still pools of water.]] Until recently, it can be seen appearing in an ancient cemetery, said cemetery being the entrance to his home dimension. So there you have it, a violent, 22'08" tall SatanicArchetype can appear anytime into the real world when it's not grudgingly watching you from its [[EldritchLocation home dimension.]] There's no way of killing it, since it's [[{{Dracolich}} already dead (Ghost-Type).]]
** There's also its overworld sprite in Lost Cave, moreso than in Distortion World, because it's there and it can be walked around. If it equated to actual size, and considering proportions to the player, Giratina is about six times taller than the player and just looks like some sort of EldritchAbomination centipede/dragon/ghost... thing. It doesn't help how purely roar-like its ID cry is.
* Darkrai. The Pokémon that locks a small child in a perpetual nightmare until players find a [=MacGuffin=]. Its in-game ability is acting as literal Nightmare Fuel. However, Darkrai doesn't do it on purpose or out of malice; it's a defense mechanism [[PowerIncontinence that it can't control]].

* Seismitoad essentially looks like a Politoed, only blue and with a bunch of orbs around its skin: one of its available abilities, Poison Touch, causes anything it touches to be poisoned. Oh, and it's said to spray acid from the orbs on its head. And Ghetsis has one.

* [[NeverSmileAtACrocodile Krookodile's]] entries describe it as being able to "...expand the focus of its eyes, [[BeingWatched enabling it to see objects in the far distance]]..." Plus, "[[SuperPersistentPredator They never allow prey to escape]]".

* While Volcarona is mentioned as having been deified as a bringer of light, it still is an enormous (as in, 5 feet tall and weighing a ''hundred pounds'') moth that spreads embers wherever it goes; one flap of its wings is enough to set vast swaths of land ablaze. And it's just one of many.

** Mega Lucario brutally beats its opponents without any sort of mercy, [[Anime/{{Pokemon}} as Ash's Pikachu can attest.]] Makes you want to think twice before teaching your Lucario [[NoHoldsBarredBeatdown Close Combat]], doesn't it?

** Oh, and the kicker? It's on Team Skull's side. [[NotSoHarmlessVillain They don't seem so goofy and harmless with a powerful synthetic hellhound with them, do they?]]

!!General

* A fair few of the Gen I sprites are scary-looking, in fact, due to being very OffModel in comparison to their official art: see [[http://bulbapedia.bulbagarden.net/wiki/File:Spr_1b_103.png Exeggutor's Red and Blue sprite,]] [[http://bulbapedia.bulbagarden.net/wiki/File:Spr_1g_031.png Nidoqueen's Green sprite,]] [[http://bulbapedia.bulbagarden.net/wiki/File:Spr_1b_042.png Golbat,]] [[http://bulbapedia.bulbagarden.net/wiki/File:Spr_1g_151.png Mew's original sprite]] in the Japanese games, [[http://bulbapedia.bulbagarden.net/wiki/File:Spr_1b_093.png Haunter's sprite.]]
* Some of the sprite animations in ''VideoGame/PokemonBlackAndWhite''. [[https://www.youtube.com/watch?v=SLKbOt89LsA Dusknoir's]] and [[https://www.youtube.com/watch?v=BHq9TxD_ySc Magnezone's]] constantly-shifting, "floating" single red eye can be unsettling, though at least Dusknoir doesn't open and close its BellyMouth this time. [[https://www.youtube.com/watch?v=hhdThARMwRA Bronzong]], meanwhile, floats around in the air with its big flashing eyes.

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* Wild encounters in general run on ParanoiaFuel, most predominately in the Wild Area. There are quite a number of Pokémon that will actively chase you down once spotted, only stopping once you manage to get far enough away. What especially makes it worse is that they can ambush you from off screen, adding an extra layer of paranoia of getting attacked by something you didn't even see coming. Some of these Pokémon in the Wild Area are pretty strong too, meaning that there's a decent chance that your whole team will get wiped out, simply because you were not prepared.
** For players who are [[WhyDidItHaveToBeSnakes scared of spiders]] running into [[GiantSpider Galvantula and Araquanid]] as overworld encounters can be unsettling, especially if they start chasing you. They can also spawn as Raid dens, which are at least optional, where they'll tower over the player character.
*** Even though it's not a spider in and of itself, Durant can invoke a similar reaction in combination with JumpScare due to the way its kind behaves in the overworld: They're located in tall grass areas, and they're small enough that the grass almost completely camouflages them. They're also among the species that actively hunt down the player once they're spotted. While bothersome, it's not so much running into and encountering them by accident that makes them especially disturbing, it's when you wait outside the grass as they indicate they're about to hunt you down, with you possibly not knowing what's about to come out of the grass, only to see this creature emerge in a fluid movement eerily similar to an actual real life spider.
** A special mention goes to the [[BearsAreBadNews Bewear]]. The Wild Area has several areas where they like to hang around, and they will chase after you when they spot you. Their sheer size, combined with their unusually stoic expression, is somehow pretty unnerving. Especially when more than one start chasing you down. Keep in mind that they're very strong to the point that [[TheDreaded they're feared across the Alola region]], so this effect was likely intentional.
*** Bike out to the little island that is Axew's Eye. If the weather is Normal or Overcast, odds are a large group of Bewear will pop out of the grass as you approach, and will likely start chasing you down as a group if you are on land.
** If you manage to catch the attention of a Liepard, you may as well just give up escaping from them. You can't outrun them, and if you aren't on your bike already in the time it takes for you to get on it, you'll get pounced on the split-second before you can actually begin pedalling. This is even worse early on, as a high-level Liepard always spawns near the bridge between North Lake Miloch and Motostoke Riverbank that will always outspeed your Pokémon, resulting in at least one casualty on your side when you try to run from it.
** To a lesser extent, those who are afraid of dogs should always carry a Water, Ground or Rock-type Pokemon with them at all times. In ''Shield'', Arcanine appear at the Lake of Outrage during bouts of intense sunlight, and just like Liepard, if you're not already pedaling when it decides to "get friendly" with you, you're not getting away. Boltund also appear post-game and unlike its pre-evolution, Yamper, it will ''chase you''. Those hunting for rare Pokemon in that region should take such precautions just to be safe.
** The aforementioned Durant is found only in ''Sword'', but ''Shield'' gets a counterpart: Sableye. Sableye is not just small like Durant, it's stupid fast in the overworld for something with a base 50 Speed. They will give chase ''immediately upon spotting you'' and are as fast as ''the bicycle can go''. You need a Rotom boost to truly get away, provided you're not spotted by another Sableye in front of you! The one saving grace is that they show up only in Dusty Bowl and only in the fog, so they'll only exist in-game on rare occasions. However, that same fog can add another layer of fear as it'll be harder to see one coming from afar.
** The ''Isle of Armor'' DLC adds Sharpedo to the overworld encounters. Thought the previous mentions of being chased were bad? Sharpedo is so fast that even a fully upgraded Rotom Bike won't necessarily get away from them. They also kick up a large and intimidating spray pattern so you'll know ''exactly'' what's chasing you. To make matters worse, in some areas you might end up getting chased by two at once. After a few encounters you may start thinking twice about [[Film/{{Jaws}} going in the water]].

* Cofagrigus, Yamask's evolution, is a sarcophagus with a malicious grin on its face and ghostly hands peeking out of the inside of the coffin. Its ability, Mummy, gives the same ability to anyone hitting it: in other words, ZombieApocalypse. According to its Pokédex entry, it pretends to be a fancy coffin so it can punish grave robbers. Its entry in ''Sword'' also states that, in contrast to Yamask weeping over its past life, Cofagrigus has completely forgotten that it was once human.

* The Dark/Dragon line of Deino-Zweilous-Hydreigon starts with one head, grows a second one as Zweilous, and gains a third one as Hydreigon, while two of them become hands. The creepiness comes from the dex entries: it says that Zweilous's heads fight over food, which means that both of them are intelligent. Hydreigon is also one of the few Pokémon who appears to be explicitly malevolent and destructive in nature. It's even called the Brutal Pokémon. According to its dex entry, "The heads on its arms lack brains." One of the heads loses its ''[[DeathOfPersonality brain.]]'' Alternatively, its brains merge and it's driven insane, accounting for its "brutal" nature. Even better (or worse), wild ones will SWOOP AT YOU FROM OUT OF NOWHERE on the Kalos Victory Road. And to make things even more worse, [[RunningGag it's another creepy Pokémon that Ghetsis has in his possession]]. [[WeaponOfChoice It's the cornerstone of his team.]]

* Mimikyu is a little BedsheetGhost dressed in a Pikachu costume because it [[IJustWantToHaveFriends wants to have friends]]. But what does it look like under the costume? [[YouCannotGraspTheTrueForm We get one clue]]: a scholar who looked under it '''died of shock'''. (However, said scholar could have died of a heart attack because the thing was so [[RidiculouslyCuteCritter freakin' cute beneath the sheet]] and people and/or Mimikyu as a species thought he died of shock, given it's a Ghost type and all...)
** Two things can be deduced about Mimikyu based on attacks it can learn: Shadow Claw, Hone Claws, Slash, etc. indicate that it has claws. And it can also learn Leech Life, an attack where the Pokémon bites the enemy to ''suck its blood''. So it's safe to assume that it has fangs...

** Those well-versed in paleontology will know that that the strength of Tyrantrum's bite is accurate to the real world ''TyrannosaurusRex'', which holds the record for the strongest bite force of any known land animal.

*** And then of course, it should be mentioned that for the ones you get to use - provided you collect the fossils and take them to the scientist - that guilt sits firmly ''[[PlayerPunch on you]]'' for for giving permission to the revival of these creatures into a life of pain or difficulty.

** The energy Mega Aerodactyl receives makes it more vicious supposedly due to the excess energy causing it pain. This is only a idea though, and its other pokedex entry simply says it is theorized that Mega Aerodactyl is what Aerodactyl looked like in prehistoric times.

** Related to that, the Dark Gyarados card from the TCG [[https://i.ebayimg.com/images/i/143046163272-0-1/s-l1000.jpg depicts]] the character making a very creepy SlasherSmile, alongside the description that "normally found only in the deep ocean, it has recently been seen in shallow waters as well.""

* The Ditto Five are a quintet of Ditto who are going around [[CaptureAndReplicate impersonating and replacing people]]. According to the police detective on the case, he says they're not doing it out of malice, just out of a severely misguided admiration of humans, but the thought still remains that here in Alola, someone you know very well and talk to every day could be a Ditto, as the detective found out firsthand when his ''partner at the police outpost'' wound up being one of these impersonators.
** At the end of this sidequest, the detective notes that finding the impersonators was possible because Ditto can't talk, but he also mulls over the idea of a Ditto being able to understand human minds and possibly being able to speak like them. That alone is an unsettling thought, but the camera slowly and ominously pans over to his smiling partner, effectively implying that ''he could very well be such a Ditto.''

* Trevanant is based on a kodama, a type of spirit that inhibits trees. Not only does it have menacing looks, but it can trap people who harm the forest so that they can never leave.

* Gothorita, the Pokémon that is known far and wide in Unova for hypnotizing people. Sometimes those people are never seen again. Its Dream World Ability is [[YouWillNotEvadeMe Shadow Tag]] and its pre-evolved form is known for obsessively staring at people. The final evolution in the line, Gothitelle, manages to be creepy in a [[AdultFear different]], [[TearJerker heartbreaking]] way, as it's perfectly capable of determining someone's lifespan through the stars. The ''B2&W2'' entry specifically notes that it starts crying once it discovers how long its Trainer has.

* Galarian Meowth looks less of a typical feline and more of a spiky ball of fur with sharp teeth and a crazed expression. And when it evolves, it doesn't become a Persian...it evolves into Perrserker, with a helmet made out of ''metallic hair fused to its face'' and has WolverineClaws that it can extend and form into a blade. It doesn't even look anything like a cat anymore!

* Galarian Corsola, and its evolution Cursola. Remember the happy, brightly-colored coral Pokémon? Well, now it's become/been reborn as a Ghost type, because apparently rapid climate change wiped out the original Galarian population. Made even worse due to it being disturbingly similar to the real-life problem of coral bleaching.

* Drifloon, a cutesy balloon Pokémon, [[http://debureturns.deviantart.com/art/Drifloon-106464127 apparently]] tries to drag people to the underworld... but is so weak that it fails, and instead ends up getting dragged around like a balloon. Then it evolves into Drifloon, who can carry at least smaller children to the afterlife, and the much more successful Drifblim.

** For players who are [[WhyDidItHaveToBeSnakes scared of spiders]] running into [[GiantSpider Galvantula and Araquanid]] as overworld encounters can be unsettling, especially if they start chasing you.

* While Hatenna will merely run away in order be left alone, Hattrem will actively and violently try to silence anyone who brings strong emotions near her by PUMMELING them with her braids which can knock out a professional boxer in a SINGLE PUNCH. Hatterene will straight up TEAR people APART with her claws if they're too loud.

* Wishiwashi. Tiny little fish that, according to Pokédex entries, are cowards, weaklings, and [[BreadEggsMilkSquick tasty]]. However, they have the Ability Schooling, which makes them gather in great numbers until they form a giantic, scary-looking fish with multiple GlowingEyesOfDoom. According to the Pokédex entry, even ''[[HorrifyingTheHorror Gyarados]]'' are scared of school form Wishiwashi.

** Just to make your day worse, have you ever heard of Literature/TheErlKing[[note]]The elf-king or alder-king, depending on how far back your etymology goes[[/note]]? It's a poem by Goethe that depicts a father racing through the forest to get his sick child home; as they ride, the child relates how he's being tormented by the elf-king, which only he can see, and his father attempts to convince him he's only imagining things. When he gets home, however, the child dies nonetheless. To supplement this: the one time you ever fight a Hypno in the wild by way of story-event? It's the one ''preying on Lostelle in the Berry Forest''.

* The version mascot of ''Pokémon Y'', Yveltal. Dusknoir might be the Pokémon world's version of the GrimReaper, but this bird of prey is based around ''death itself.'' It's RedAndBlackAndEvilAllOver and is about '''twenty feet tall.''' And its {{signature move}} is [[DeathFromAbove Oblivion]] [[LifeDrain Wing]][[note]]named "Death Wing" in Japan[[/note]]. It has plot relevance in ''Pokémon Y''.