History NightmareFuel / Digimon

* Chaosmon are really disturbing, even by the standards the Digital World has. They're not supposed to exist, which shows by the very edges of their bodies glitch. Even worse, the Digimon that wind up creating a Chaosmon[[note]][=BanchoLeomon=] and either Darkdramon or Valdurmon[[/note]] are still alive and conscious in its shoulders, with their severed heads turned into weapons, in a dark twist on Omegamon's design.

** And if Ogremon wasn't scary enough, there's his evolution: Titamon. A creature born from the hatred of the hatred of all Digimon defeated by the Olympos XII. His sword, the Zanjintou, is made with [=SkullGreymon's=] head, and it's able to torment anyone pierced by it with hallucinations. The worst part? The skulls in his arms are from every single opponent he has defeated, and he's able to use them to summon an undead legion on his command. There's a reason why this beast is called an OneManArmy

* The profiles on the early (pre-2002) cyborg Digimon, which imply someone or some''thing'' was using them as guinea pigs to create Mugendramon and Chimarimon, and given what those two Jogress into... yeah.

* NightmareFuel/DigimonXrosWarsTheYoungHuntersWhoLeaptThroughTime

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[[folder:Digimon Xros Wars/Fusion]]
* After having absorbed the Gehenna Sphere, Lucemon.
* How about Tactimon? This Digimon leads most of the Bagra Army's forces and fully embraces the WeHaveReserves attitude. He'll do anything to achieve a perfect victory, even if he has to wipe out his own forces right along with his enemies. Dorulumon defected after [[EveryoneHasStandards getting fed up with it]]. Because of that, Tactimon's first order of business upon encountering Xros Heart is to order Dorulumon executed as a traitor, and he doesn't just have Dorulumon taken out and shot either. He orders his underlings to burn Dorulumon to death as slowly and agonizingly as possible and [[WouldHurtAChild orders the same done to Taiki]] simply for the convenience of killing two of his enemies at once.
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[[folder:Individual Digimon]]

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* NightmareFuel/DigimonXEvolution

[[AC:The Young Hunters Leaping Through Time]]
* The state of Blossomon's victims after he drains them in episode four. ''Seriously.'' They just wither into husks as if they were plants themselves.
* This may be intentional or not, but Dracumon's evolution to Yaksamon shows him ''ripping his own face off.''
* Sephirotmon was just plain ''creepy''. The scene where laughing children appeared from inside his mouth didn't help.
* While he doesn't really do much in the long run and the destruction he does is easily reversible, it doesn't change how horrifying Quartzmon really is, simply because very few Digimon villains play to his level. It can catch you off guard if you aren't expecting it.
** Quartzmon is a genuinely disturbing Digimon. Its main body is a slimy, chalk-white D-Reaper-esque mess with [[MultiArmedAndDangerous multiple arms]], a mask with six eyes and a large BellyMouth. It's difficult to believe that this thing is a Digimon and not some Angel from ''Anime/NeonGenesisEvangelion'' -- at least Millenniumon and Diablomon look like Digimon unlike this ''thing''. He also converts entire portions of the human world into [=DigiQuartz=] and moves onto taking over the world instantly when he's fully manifested. If you ask a Japanese fan they'll tell you this guy is just as bad as the '''D-Reaper''' and it's for good reason.
** The reveal that he is is '''Astamon''' all along. ''Just how long is he within the Hunter's group??'' Also after that reveal, he opens his BellyMouth to reveal the numerous Digimon victims he absorbed, all of them which are writhing in pain.
** He's one of the few villains who merrily attempt a HostageSituation against TheHero by ''showing the faces of the numerous people he absorbed'' in obvious AndIMustScream situations, and dares if Tagiru were to hit him, he could say goodbye to everyone else. The way he does it is just hardcore BodyHorror; he extends his limbs in a tree-like fashion and the faces of his victims appear on each "branch", aware that they are being absorbed but can't do anything against it. He shows more when Tagiru and Arresterdramon gets close to his core.
** Just how he ''literally'' managed to TakeOverTheWorld. It doesn't last long, but Digimon villains who attempt to take over the world are usually stopped short before they manage it. This guy isn't one of these cases and by the point Tagiru fights him he's the last man standing.

[[folder:Digimon Savers/Data Squad]]
* Elecmon in episode 6. It's smiling in a kind of empty way when it first appears and when it is confronted by the protagonists, that empty smile becomes a full blown SlasherSmile combined with soul piercing eyes.
* The Gizumon. They already look wrong, but then you see what they do. They're designed to kill Digimon. Not defeat, or capture, kill. And any Digimon they kill stays dead, without turning into a egg. And they rampaged across the Digital Worlds ten years before the series begins, massacring its population.
* Also, the shot of Digimon in a lab, hanging in tubes. The [[StrappedToAnOperatingTable implications]] are all kinds of wrong, especially since many of those Digimon are In-training level.
* To say nothing of the man responsible for both of the above, [[TheSociopath Akihiro]] [[MadScientist Kurata]]. He's hands down the most evil character in the franchise. Creating the aforementioned Gizumon, mechanical monstrosities that make other Digimon DeaderThanDead by stopping them from reincarnating like usual, and experimenting in creating half-Digimon hybrids were only the start. Creating a weapon of mass destruction to kill thousands of Digimon in one shot, forcing the TeenGenius on the heroes' side to a FaceHeelTurn by threatening to kill his DelicateAndSickly little sister with an explosive collar, trying to replicate his hybrid experiments on said sister, and finally awakening a mighty Demon Lord and merging with it to destroy all of his enemies so that he could then wipe out all Digimon and have total control of both the Digital World and the human world...well, that should give you an idea of how loathsome this guy is. And his motives? [[EvilIsPetty Petty]] {{Greed}}, [[DirtyCoward cowardice]], [[FantasticRacism prejudice]], and InferioritySuperiorityComplex.
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[[folder:Films]]
[[AC:Digimon: The Movie]]
* In ''Digimon Adventure'', when Koromon decides to give his human friends a face hug. Anyone who seen ''{{Film/Alien}}'' would find this horrifying.
* Keramon. Let's see... [[BlackEyesOfEvil empty black eyes]], [[PsychoticSmirk a much-too-vacant smile]] and insanely long, boneless arms. He's even creepier when he appears in ''Anime/DigimonDataSquad'' as a MonsterOfTheWeek since he moves around a lot more. At least [[Franchise/TheSlenderManMythos the Slenderman]] didn't have a face. Even Diaboromon's eye movements weren't this creepy.
** Keramon's entire Digivolution line is the stuff of nightmares. Kuramon maybe less so, but Tsumemon starts to ''[[BigEater eat the Internet]]'', Infermon is a [[BigCreepyCrawlies HUGE armored insect]] that is also [[LightningBruiser disturbingly fast]], and Diaboromon, besides his [[EvilSoundsDeep demonic voice]], equally fast speed, and the fact that his Japanese name (Diablomon) makes it clear [[SatanicArchetype what he resembles]], is very, very smart. And then there's [[EldritchAbomination Armageddemon]]...

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