[[quoteright:350:[[VideoGame/FireEmblemThracia776 http://static.tvtropes.org/pmwiki/pub/images/2_ch1_002.png]]]]

As though the ever-present risk of [[FinalDeath losing your units for good]] wasn't enough to fill you with dread, the ''Franchise/FireEmblem'' setting has many disturbing elements to keep you unnerved well after the battle has ended.

!Titles with their own pages:
* ''NightmareFuel/FireEmblemGaiden''
* ''NightmareFuel/FireEmblemAwakening''
* ''NightmareFuel/FireEmblemFates''

!Examples from two or more entries:
* In general, some of the characters' FinalDeath quotes can be this, especially the ones that [[KilledMidSentence abruptly cut off mid-line]]. In later games, the character's eyes will actually close as they finish the line. The ''[[VideoGame/FireEmblemTellius Tellius games]]'' in particular have some [[http://serenesforest.net/path-of-radiance/scripts/game-script/miscellaneous/death-quotes/ very disturbing]] [[http://serenesforest.net/radiant-dawn/scripts/game-script/miscellaneous/death-quotes/regular/ death quotes]], here are a few examples. (Note that Tormod and Rolf are ''children''.)
-->'''Tormod:''' No… Move… Listen to me, body… Move… Muarim…where are you? I’m…done…for…\\
'''Nephenee:''' The world… It grows… so…dark…\\
'''Geoffrey:''' Queen Elincia! My queen, where are you?! I can’t see… Blood is in my eyes… Your Majesty… I’ll be right…there…\\
'''Rolf:''' …So this is what fate…had in store for me… I’m so cold… I still had…a lot…to learn. Oscar… B-Boyd… Shinon…
* Pray you don't get a GameOver in ''The Binding Blade'', ''The Blazing Blade'', or ''Path of Radiance''. The music that plays during these scenes is very disturbing, as is the blazing crimson background.
** ''Shadow Dragon'' and ''Thracia 776'' aren't very pleasant either.
* The concept of the Nosferatu spell: [[TheCutie That cute little]] MysteriousWaif Girl just got her face smashed in by a massive battle axe, then casts this spell which drains the life energy of her enemy and instantly heals the wound she just suffered. [[LightIsNotGood Oh, it's a Light spell]]. It also has a creepy sound effect when cast.
** Later games make it a Dark spell, though the Tellius games revert it to Light (and then ''Awakening'' switches it right back to Dark). Still somewhat creepy, though.
* The whole idea of the Berserk status. Someone hit by a spell from a Berserk staff will be sent on a blind, murderous rampage, attacking anything and everything that comes remotely near them. Let that sink in.
!Examples from specific entries:
* ''VideoGame/FireEmblemGenealogyOfTheHolyWar'':
** The sound effects of the Loptyr and Naga Spells are creepy as hell and can't be properly rendered by an emulator.
** The way [[http://fireemblem.wikia.com/wiki/Battle_of_Barhara the Battle of Belhalla came to life]]. Think of it: not only is [[TragicHero your leader]] [[KillItWithFire incinerated to death]] [[MagnificentBastard by the Emperor]] (and after a TearJerker of a scene in which [[spoiler:he gets to see that his wife has been brainwashed into marrying said Emperor]]), but then the whole army that you're a part of is [[DeathFromAbove bombarded by a storm of meteors]]. And you're unable to escape because the Royal Guard has you trapped in there. [[CruelAndUnusualDeath Seriously, not cool!]]
* ''VideoGame/FireEmblemThracia776'': [[http://fireemblem.wikia.com/wiki/File:FE5_Hell.gif The graphics for the Hell spell]]. The image of a demonic-looking woman being embraced by skeletons in a hellish atmosphere is just a nightmarish sight to behold, especially in comparison to its ''Genealogy'' equivalent. [[https://lparchive.org/Fire-Emblem-4-Binary/Update%2001/2-Ch1_002.png Here's a still view of it!]]
* ''VideoGame/FireEmblemTheBlazingBlade'':
** [[spoiler:Zephiel's]] SlasherSmile....which is accompanied by a ''horrifying'' musical sting, and is also [[TheStinger the last shot in the game]]...
*** What makes this worse? This is a reference to ''The Binding Blade'', where Zephiel becomes the main antagonist. However, this is only hinted at the end of ''The Blazing Blade'', meaning that it's likely that you will have ''absolutely no clue what the game is telling you here''. So after you beat the game and save the world, the last shot is of a man you [[ThatOneLevel went through hell to save]] [[FaceHeelTurn turn evil]]... and you have no idea why.
*** Actually, the entirety of Zephiel's family in ''The Blazing Blade'' is pretty much this and {{Tearjerker}}. Being held up by insecurity with a manipulative mother (Queen Helene) and a jealous and abusive father (King Desmond), and the latter even attempting on one's life is seriously not fun on its own. It gets even worse when you consider the ramifications this causes 20 years later.
** In the last chapter, you have to fight many previous bosses ''that you already killed'' (and one guy who got offed in a cutscene... that you may not have even witnessed if you didn't meet the requirements for the side chapter it leads up to, making him a GiantSpaceFleaFromNowhere). To make things even creepier, [[NothingIsScarier none of them have the ability to talk]]. No TrashTalk, no BossBanter, nothing. When you kill them, they ''still'' say nothing, but they '''smile''' as if in gratitude.
*** If you look closely, the portraits for these revived bosses are a bit discolored. When you kill them, [[DyingAsYourself the portraits get a little color back]].
** The ([[VisualEffectsOfAwesome admittedly badass]]) animation for [[spoiler:Nergal's attack, Ereshkigal]] -- it's a hellish vortex of dark magic, and the noise it makes... It's a serious step up from the standard-issue dark magic used in the game.
* ''VideoGame/FireEmblemTheSacredStones'': [[spoiler:Orson's]] conversation with his wife at the beginning of chapter 16. The joyful, carefree way in which he talks to her, in contrast to [[DullEyesOfUnhappiness the empty look in his eyes]] and of course the fact that his wife [[spoiler:is nothing more than a corpse that can do nothing else but repeat the word "darling", over and over again]]. It's uncanny in the most creepy way.
** It's made worse by the fact that Ephraim and Eirika find her later, and [[spoiler:they're appropriately horrified when they see her. Monica is never even shown on-screen, but everyone else's reactions to her sure are.]]
* ''VideoGame/FireEmblemPathOfRadiance'':
** The [[http://www.youtube.com/watch?v=kSZ0YJH6A24 theme for the Serenes Massacre]] is... very unsettling.
** The Feral Ones are what was once Laguz, a race capable of transforming into hawks, tigers, giant cats, and other animals. They've been locked into their transformed state with the use of a potion that makes them lose all sense of reason and also drastically shortens their life span. It can also be given to Beorc (humans) for the same effect, sans transformation. Bertram[[spoiler:/Renning]], a Beorc, is seen starting to go through this transformation, and it turns him into a ''very'' unsettling BloodKnight. And then there's his ''[[SarcasmMode lovely]]'' dialogue for when he fights [[spoiler:Ike]]:
--->'''Bertram:''' Kill...me... ...KILL...M-ME...
** The basement room of Gritnea Tower [[spoiler:filled with countless Laguz corpses]]. The dialogue and the music leading up to it are unsettling enough, but then you see the actual ''room''. What really drives it all home, though, is the characters' reactions.
** The music "Puzzling Truth" sounds very disturbing and signals the part in the story that shit's gotten real. If there's any song you wouldn't want to hear in a dark alley walking home at night, it would probably be this one. [[https://www.youtube.com/watch?v=be1POFOwa0U Here's what it sounds like.]] Enjoy sleeping tonight.
* ''VideoGame/FireEmblemRadiantDawn'': The blood pact. A cursed contract that binds the signer to the contractor's service. The one who is in possession of the contract can invoke a curse to the other party's nation if the other party does not do as the holder wishes. And killing the signing party does ''not'' dispel the curse. The only way to break the curse is to kill the contractor and then tear the scroll containing the contract. [[spoiler:Lekain used it to bind Naesala and Pelleas to his service until Sanaki took charge of things, and prior to that, Ashnard had manipulated his father into signing it, ultimately resulting in Ashnard killing his father and taking over Daein.]]
** The result of the contract during ''Radiant Dawn''[='=]s story is not pretty. Not only is the Dawn Brigade powerless to stop Lekain's atrocities, but they're also forced to fight for Lekain and effectively enforce Daein's rule the same way Ashnard did. [[spoiler:Micaiah is so desperate to win that at one point, during a skirmish with the Laguz Alliance, Micaiah's last resort is to lure them into the bottom of a canyon doused with oil and setting fire to it in a last-ditch effort to wipe out the Laguz Alliance. If not for Tibarn's timely intervention, we'd have in our hands one of the most gruesome massacres in all of ''Fire Emblem'', rivaled only by what took place in the first part of ''Genealogy of the Holy War''.]]
* ''VideoGame/FireEmblemHeroes'': The story takes a very dark turn in Chapter 4 of book 2. Specifically part 5, where Prince Alfonse is forced to choose whether he and the Order of Heroes should save the Askran citizens in a nearby village, or flee to Nifl to escape King Surtr. After giving this ultimatum, Surtr describes to the Order of Heroes the fate of the Askran citizens should they choose to flee.
-->'''Surtr''': Let me tell you something you might not know... being burned alive is one of the most painful ways to die. (Cue SlasherSmile) First the skin burns off... Then the muscles themselves begin to fall apart. In the end, they all wail. "Please... kill me! Please!"