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[[quoteright:350:[[Film/RevengeOfTheSith http://static.tvtropes.org/pmwiki/pub/images/swhonf7_3951.jpg]]]]
[[caption-width-right:350:That looks rather painful.]]

!! Sub-pages:
** NightmareFuel/ANewHope
** NightmareFuel/TheEmpireStrikesBack
** NightmareFuel/ReturnOfTheJedi
** NightmareFuel/ThePhantomMenace
** NightmareFuel/AttackOfTheClones
** NightmareFuel/RevengeOfTheSith
** NightmareFuel/KnightsOfTheOldRepublic
** NightmareFuel/StarWarsCloneWars
** NightmareFuel/StarWarsTheCloneWars
** NightmareFuel/StarWarsRebels
** NightmareFuel/StarWarsTheOldRepublic


* [[BigBad Emperor Palpatine/Darth Sidious]] was arguably the most terrifying character in the entire franchise. Palpatine seems to be the most needlessly evil, and outright cruel character. It is virtually uncountable the number of deaths orchestrated by himself. He orchestrated every atrocity that occurs throughout the franchise.
** He is [[AdultFear a resemblance of power-hungry, selfish politicians in the real world (past, present, and future)]], and his force lightning is absolutely terrifying - so terrifying that only Yoda has managed to push it off.
** The ExpandedUniverse shows us that he also killed his own parents and siblings, showing how monstrous he really is.
** Worse, in the film, Darth Vader himself says that the Emperor is not as forgiving as [[YouHaveFailedMe him]].
** Throughout the films, we find out he is behind almost all the bad things that happen—he engineered the invasion of his own home planet, started the Clone Wars and used the start of the war to gain considerable emergency powers, nearly annihilated the Jedi Order '''including the children''', turned Anakin to the Dark Side, killed and disposed his loyal Separatist allies when he had no use for them anymore and made the Republic into a fascist dictatorship ruling by fear and using planet-destroying superweapons like the Death Star against anything with the idea of dissenting and personally destroying entire populations that conspire against him. He only has loyality to himself—it is implied in Episode VI that he treated Darth Vader as expendable when Luke defeated him and wanted to make Luke his apprentice instead while leaving Vader to die.
** To get an idea on how terrifyingly evil Palpatine is, his own actor directly compares him [[SatanicArchetype to the Devil.]] Not just that, but he claims that Palpatine ''[[UpToEleven is more evil.]]''

[[folder:Expanded Universe]]
* The Dark Side ending of the first game from ''TheForceUnleashed''. [[spoiler: After killing Darth Vader, Starkiller tries unsuccessfully to attack Palpatine. Next thing he knows, Palpatine grips the Rogue Shadow with the Force and, with Juno Eclipse still inside the ship, throws it on top of Starkiller. The last thing Starkiller sees is darkness until he wakes up on an operating table, finding himself being clad in a suit of life support armor.]] Add some last-second EyeScream, and you'll wish [[http://www.youtube.com/watch?v=t4Vr5jxUtak you'd chosen a different final boss.]]
** The second game's Dark Side ending would also count for some. Starkiller raises his lightsaber, ready to end the threat once and for all. Suddenly, [[BackStab a blood-red lightsaber emerges from Starkiller's chest.]] The attacker decloaks, revealing a hooded figure. [[CoolOldGuy Rahm]] [[BlindSeer Kota]] charges. The hooded figure whips around, blocks all his attacks, and flings him into his Rebel escort. Then, he sends them flying to the ocean below. Vader stands over Starkiller, and says that [[BatmanGambit he lied when the cloning process hadn't been perfected.]] The hooded figure reveals himself. His face is a perfect image of Starkiller, only devoid of ANY emotion. That has to give one chills.
* How about the downloadable Endor level from the ''TheForceUnleashed'' 2? It follows the alternate dark side ending of said game with how differently things would have played out in the movies had Vader's evil Starkiller clone been a success. Taking place during ''Return of the Jedi'', Vader sends the clone down to Endor to ''kill'' the Rebel forces trying to take out the shield. Throughout the level, evil Starkiller mows down ''all'' the rebel soldiers as well the Ewoks and successfully kills Han, Chewbacca, and Leia (it was implied that Luke froze to death on Hoth in this timeline). And of course there's a scene afterwards of the Emperor proudly announcing the Empire's final victory and killing Vader upon realizing his secret betrayal. The whole level is basically one huge case of "right in the childhood."
** Even worse is how evil Starkiller kills Chewbacca: by using him as a live shield when Han attempts to open fire at him.
** Just be thankful it didn't show what he did with C-3PO and R2-D2...
* ''TheForceUnleashed'' sequel has a level on a [[CoolStarship Nebulon-B frigate]]. The ship is boarded by unknown forces, led by Boba Fett, but as you go on through the level, you learn that what your facing is terrifying. The [[GoddamnedBats spider droids]] latch onto you with razor-sharp pincers. The [[CombatSadomasochist infantry]] can teleport away from your lightsaber strikes, and have cybernetic upgrades along the lines of Grievous. The [[TheBrute giants]] have scalding hot claws specifically designed to cleave through durasteel. The [[DiscOneFinalBoss walker]] could crush you like a bug, and has a screech that sounds like a demon had it's vocal chords ripped out, and combined with nails on a chalkboard. As you progress through this level, you'll learn that this contingent of EliteMooks are called the [[NamesToRunAwayFromReallyFast Terror Troops]] for a very good reason.
* There was a webcomic called [[http://starwars.wikia.com/wiki/Evasive_Action Evasive Action]], which described the lives of three Padawans who survived Order 66 and went into hiding. They were on Felucia when Order 66 was issued, and in a convenient spot to watch Aayla Secura [[http://starwars.wikia.com/wiki/File:ZonderOrder66.jpg get shot down by her own troops]]. Take a look at the background image of Aayla's DiesWideOpen expression... yeah.
* ''[[NewJediOrder Destiny's Way]]'' mentions some of the critters employed in the Yuuzhan Vong [[HumanSacrifice Sentient Sacrifice]]. Flaying knives, flesh-eating beetles... We knew already that it wasn't a barrel of laughs, these being the Yuuzhan Vong and all, but still...
** And it says that it takes several hours, and the victim is generally conscious for most of it--presumably, [[FridgeHorror the Vong have means to keep them from blacking out]].
* Joruus C'baoth's MindRape of General Covell. Imagine a ''military officer'' having to relearn the concept of ''obedience''!