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[[quoteright:350:[[Recap/SamuraiJackS3E9JackAndTheHauntedHouse http://static.tvtropes.org/pmwiki/pub/images/c31727edd9ac5155f480d842971aed6a.png]]]]
[[caption-width-right:350:NothingIsScarier indeed.]]

Given that the series takes place in a [[CrapsackWorld bleak, dark, gloomy dystopia]] ruled by a malignant demon, Samurai Jack was perhaps one of the darkest shows of its era in Creator/CartoonNetwork. If you can watch the whole series without a little tension or terror, then you are just as brave as Jack himself. Some episodes were entirely built around NightmareFuel; even the episodes not revolving around horror have scenes that are traumatic, especially if you saw the series as a kid.

The frequent robot carnage that the censors let pass in every episode occasionally goes ''way'' beyond the borders of "not too bad"; once you reach dismembered robots impaled on spikes, things have gotten bad.
----
[[foldercontrol]]

[[folder:General]]
* Don't let his [[LaughablyEvil comedic facade]] fool you, [[OurDemonsAreDifferent Aku]] is quite literally the living embodiment of NightmareFuel. He's a fragment of an EldritchAbomination who has demolished thousands of cities and towns, massacred and enslaved millions of people, and turned the Earth and many other planets beyond into a living hell. He's easily one of the darkest Cartoon Network villains, if you can get past his hammy moments.
** Heck, [[CosmicHorrorStory the origin of Aku]] is '''pure''' NightmareFuel. For more information, go to the entry of the episode "The Birth of Evil". This two-part episode is relentless at showing how vile, horrific and dark Aku truly is.
** Aku is especially scary in the three-part series premier. His hissy CreepyMonotone, his lack of humor and absolute ruthlessness...
** Just the very image of Aku in the [[https://vignette2.wikia.nocookie.net/samuraijack/images/b/b9/Samurai_Jack_2016_Poster.jpg/revision/latest?cb=20151203203726 promotional image for Season 5]]. There is something deeply unsettling about the blank, ThousandYardStare that Aku is giving. There's none of the over-the-top personality that the villain typically displays. And with the knowledge that the episodes would be significantly darker...
* Jack himself can be pretty scary sometimes. This is best shown in episodes such as "The Princess and The Bounty Hunters", which portrays Jack as a mute ImplacableMan who ([[ShrugOfGod maybe]]) ''kills'' live, non-robotic enemies without a hint of guilt.
** Any time Jack gets [[UnstoppableRage angry]]. In fact, this is main reason why [[EnemyWithin Mad Jack]] [[spoiler:(his Inner-Self)]] exists.
** [[https://en.m.wikipedia.org/wiki/Samurai_Jack_(season_5)#/media/File%3ASamurai_Jack_season_5.png This]] poster for Season 5. There's something incredibly unnerving about it. From Jack's menacing KubrickStare, his unrecognizable appearance, all topped off with him being ''covered in blood.'' Being the first thing we really saw out of Season 5, it truly cemented that ''Samurai Jack'' [[DarkerAndEdgier ain't for kids anymore.]]
* The Demonic Spirit (pictured right) is easily the most frightening villain in the entire series. For more information, go to the entry of the episode "Jack and the Haunted House".
* The Cult of Aku. An all-female cult completely dedicated to the worship of Aku. The fact that we know so little about the cult makes it even scarier. Are they brainwashed? Do they genuinely believe Aku is a benevolent god? We will never know.
* The HighPriestess from Season 5 is living, walking NightmareFuel. Beneath that [[FauxAffablyEvil classy, refined, aristocratic personality]] lies a robotic, emotionless [[AxCrazy psychopath]] creepily obsessed with Aku. She's just as twisted and cruel as her dark god, and that's saying a lot.
** Worse, unlike most of the villains in the series, the High Priestess ''is completely devoid of comedic features'' ('''not even a single gag'''), which is quite rare when Aku himself has his comedic moments.
** Even worse? Unlike Aku and his servants, this woman is an actual ''human''.
* Aku's world is this in general. It's a severely polluted wasteland that is almost completely drained of food and water and infested with dictators (such as the Chritchellites and the Dominator), gangsters, soul-eating demons (such as Demongo and the Demonic Spirit from "Jack and the Haunted House"), {{bounty hunter}}s, and interplanetary bandits, all of whom are given complete free rein under Aku's rule. Atrocites are a daily occurrence, as all the previously mentioned thugs often massacre and pillage populated villages and cities for their own personal gain. Aku is also more than willing to have his henchmen turn innocent civilians into slaves against their will, deprive them of food and water, and force them to make statues in his likeness. To call it a CrapSackWorld would be an understatement.
* The Dominator (from "XCVI") is easily the most evil and sadistic villain in the series next to Aku. A sadistic, psychopathic TortureTechnician who slaughtered a defenseless town, robs its children and forced them into a [[BrainwashedAndCrazy violent frenzy]]. Just like the High Priestess, he's an actual ''human'' doing dark things to people, and a nightmarish example to demonstrate how Aku's corrupt regime has allowed people like him to prosper in this BadFuture.
** Unlike other villains in the series, most of whom were given a backstory or implications of why they are evil, the Dominator doesn't. [[NothingIsScarier He's just... there]].
* Although he could give Aku a run for his money in terms of pure [[LargeHam hamminess]], [[PsychoForHire Scaramouche the Merciless]] can be this. The first thing he does in his first appearance is ''murder an entire village'', no children spared, all without a hint of remorse.
* '''THE OMEN.''' Good god, the Omen.
** The Omen's theme is pretty chilling too.
[[/folder]]

[[folder:Season 1]]
[[AC:The Beginning]]
* The very start of the episode is really ominous, [[DiabolusExNihilo when a solar eclipse out of nowhere]] that makes [[HellIsThatNoise demonic buzzing noises]] allowed Aku to revive because the darkness prevailed in that one moment and reinvigorated his petrified body back into its original state. If only Jack's father had known this would happen through star charts. Unfortunately, it seemed fate just decided to unleash Aku back on the world then and there.
* Aku's assault on young Jack's home city in the very beginning. He shows up looking bored, the garrison attacks him, and finally he smiles entertained as he ''wipes them out with the very arrows they shot at him'', and ''then'' he starts attacking half-seriously.
** Aku's mannerisms are much more restrained throughout the three-parter. He's not the LaughablyEvil LargeHam of later seasons; he's just '''evil.''' His first line is nothing more than a hoarse whisper, yet it serves as a positively spine-chilling EstablishingCharacterMoment:
--> ''Once again, I am free to smite the world as I did in days long past.''
** To make matters worse, Jack's father (the Emperor), the only person who knows how to defeat Aku, is immediately stopped before he could do so; Aku grabs the Emperor before he could take his sword (the only thing that can harm Aku), [[TheBadGuyWins allowing Aku to conquer Japan]]. Jack and his mother escape [[TearJerker in tears]].
** For more {{t|earJerker}}ragedy, when a now-grown-up Jack returns to his home country, he finds everyone [[FateWorseThanDeath has been]] [[MadeASlave enslaved]]. His father got the worst of it; he has become [[HowTheMightyHaveFallen a weak and decrepit old man]], and is denied adequate food and water. Aku sure knows how to [[BreakTheBadass destroy even the strongest of spirits]].
* As Jack is flung into the future, his whole body, especially his limbs, warp and contort like they were a pile of soggy noodles being tossed down a drain.

[[AC:The Samurai Called Jack]]
* Aku punishes a young alien for openly disrespecting him by shooting EyeBeams, seemingly disintegrating him. The grieving father is then told by Aku that the boy was teleported to [[{{Hell}} the Pit of Hate]], [[FateWorseThanDeath where he would eventually learn to respect Aku]].
* [[http://static.tvtropes.org/pmwiki/pub/images/1466015232507.jpg Jack witnesses]] the aftermath of the [[CivilizedAnimal talking dogs]]' persecution by Aku; he sees silhouettes of ''crucified'' dogs, and it's implied that they are dead. Aku has been committing so many atrocities like this since Jack's original time period to the present day, to many races throughout many planets. For ''thousands of years''.

[[AC:The First Fight]]
* An [[RoaringRampageOfRevenge angry Jack]] is a ''terrifying Jack''. He becomes a raging, screaming warrior amidst all of the injuries and the beatings he takes from Aku's Beetle Drones, as he is practically ''covered'' in [[SymbolicBlood oil]]. Even the Drones look terrified of him, before he promptly slaughters them all.
** Even worse, there's this long hold on his face. And he's covered in oil, his entire head and eyes. And his head just ''sloooowly'' turns to stare at the Drones in complete silence. It's downright spooky and ominous as all get out.

[[AC:Jack and the Lava Monster]]
* Jack is traveling through the scorched countryside that was once the Lava Monster's home, implied to be in Scandinavia. It's bleak, cold, and littered with ash and corpses. On top of that, there's an ominous voice constantly beckoning Jack to follow it.
-->"Come... ''Come...!''"
* As Jack comes closer and closer to reaching the end of an increasingly lethal series of traps placed by a cursed warrior, you see ''dozens'' of skeletons strewn about his labyrinth of death, all killed in brutally horrific fashion when they each made a lethal mistake on the way in.
* After Jack breaks the curse on the warrior, he returns to human form; but the entire time he was locked away in that demonic prison, he was separated and left untouched from the natural flow of time. [[NoImmortalInertia He rapidly ages into a frail old man in an instant and dies]]. Fortunately, [[HeartwarmingMoments he's carried off to the afterlife paradise of Valhalla to live in eternal bliss]].

[[AC:Aku's Fairy Tales]]
* Even [[CrowningMomentOfFunny one of the most hilarious episodes]] where Aku is involved merely paints him horrific in a different light. He rounds up kids from within the capital city, with no reason given to them or their parents. The room they're led to is large, red, and spiky as always, but has monitors of adorable, yet... off animals, which eventually switch off. The camera focuses on a large red throne in the room. And Aku just appears. No fanfare, no flashy effects, no booming monologue. [[NothingIsScarier He's just there]]. This is how he starts ''reading propaganda stories to children''. It's just fortunate that [[{{Narm}} Aku really sucks at brainwashing]].
** Imagine if you were a child forced to go into that arena; the moment Aku appeared, you'd piss yourself in terror.
* One of his stories shows an Evil Jack inside the Three Bears' home, hung over. Bleary, blood-shot eyes are never a pretty sight.
[[/folder]]

[[folder:Season 2]]
[[AC:Jack Tales]]
* Jack encounters a seemingly-human family who turn out to be metal-eating robots. The robots, in a fit of hunger, rip each other to shreds, and the insides of the robots look just graphically enough like human flesh to creep you out.
** The family were unaware that they're actually MechanicalLifeforms, only feasting on "the mother" when her face was revealed to be robotic. [[FridgeHorror Who's to say they weren't originally people who underwent some sort of]] [[LaserGuidedAmnesia memory-erasing]] UnwillingRoboticization? What if their story about being "survivors" of a raid was true, and they woke up after being experimented on, perfectly ordinary but having a violent taste for metal? As there's no real backstory regarding them, NothingIsScarier is in full effect.
** When the "mother's" true nature is revealed, the others, who seem to have humanlike personalities, almost immediately turn on her, then each other. How long must they have been starving?

[[AC:Jack and the Ultra-Robots]]
* The carnage and devastation caused by the Ultra-Robots is worth mentioning, especially the [[DesolationShot ruins of the second city]]. [[SceneryGorn Mutilated innocent robots with horrific faces strewn about, some of them on pikes]], [[SymbolicBlood and oil EVERYWHERE]].
** Also note that they didn't just attack other robots, they destroyed two other towns, one with little cat-like creatures and another with a population that bore a resemblance to the [[Franchise/StarWars Sand People]]. The latter of which is notable in that Jack encounters ''no survivors''.

[[AC:Jack vs. Demongo, the Soul Collector]]
* Demongo, ''dear God''. Not only is he a demon, he [[YourSoulIsMine steals the souls]] and keeps the skulls of all the warriors he's slain. Skulls that he ''wears on his chest''. Skulls that he can toss out to summon [[SlaveMooks the ghosts of the fallen warriors to do his bidding]], all of whom have creepy blue mind-controlled eyes.

[[AC:Jack and the Spartans]]
* The Mechanical Beast is absolutely frightening to behold. First, it sneaks up on Jack and the king of the Spartans out of a pipe, its malicious red eyes lighting up in the dark and glowering down at them. Then out comes a giant ball with huge fangs and toothy tentacles that makes the [[Film/TheIncredibles Omnidroid]] look like a dust bunny. And all the gravelly [[HellIsThatNoise SCREECHING]] it does when it's angry or injured is like hearing the bloodlust of an angry vampire bat!!
[[/folder]]

[[folder:Season 3]]
[[AC:Chicken Jack]]
* The creatures that the [[BalefulPolymorph chickenized]] Jack battles in the animal-fighting arena ranged from downright creepy to outrageously grotesque. And this was a lighter episode!
** Jack previously showed a real distaste for being [[BloodSport forced to fight for entertainment]], [[GladiatorGames back in the Dome of Doom]]. Here in a cockfighting pit that's decidedly less guarded, he makes all of one attempt to escape; then just applies himself to fighting opponents, and moping when the man who caught him won't feed him. Combined with how the episode stops showing POV shots where he speaks, even if his words are just chicken sounds to onlookers, it seems like TheMindIsAPlaythingOfTheBody, and he became just a clever rooster.

[[AC:Jack and the Zombies]]
* Some of those [[OurZombiesAreDifferent zombies]] were just plain freaky, like the long-armed zombie, and the one that steals Jack's sword. And when he falls into the crypt... that wail.
** The banshee that possesses Jack's sword seems to be something different, like a ghostly witch serving as a direct minion of Aku, and possibly even the one whose magic is being used to reanimate the dead, who is [[WreathedInFlames surrounded in blue flames]] and actively levitating, then transforms into a fanged monster as she charges Jack. Somehow, she's able to force Jack's sword forged to destroy everything evil into moving under her own power. Then, hFer light around Jack's sword recedes when Aku grabs hold of it, indicating she has merged with him, and that she was worse than a zombie- ''she was born directly from Aku's essence itself.'' She also speaks, unlike the rest of the undead warriors. And the one thing she says is ''mortifying:''
-->'''Banshee''': ''(shrieking every word)'' I WILL '''EAT''' YOUR '''''SOUL!!!'''''
* The [[OhCrap look on Jack's face]] when Aku starts to use ''his own sword'' against him. Sure, Jack is still able to fight back, but a good chunk of that fight is Jack trying to run away or dodge Aku's attacks. Unfortunately, [[YouWillNotEvadeMe Aku doesn't let Jack escape that easily]]...
--> '''Aku:''' "Oh, Samurai? Where are you, Samurai? [[YouCanRunButYouCantHide You can run, but you cannot hide]], 'cause '''I can smell your''' '''''blood!'''''"
** The way Aku's voice changes for those last five words just really pushes his creepy-meter to the red.
** The entire sequence after Aku seizes the sword. Jack can't hurt him at all. All he can do is run and block Aku's attacks, and while Aku starts with the sword he pulls out all the stops - eyebeams, fire, shapeshifting on a scale not otherwise seen on this show. There's a part where Aku is just a spreading mass of tendrils, and the camera pulls back to show just how ''big'' that mass is. It really emphasizes how screwed Jack, or anyone else, is when trying to oppose Aku without the sword.
** And then Aku's close-up as he's about to stab Jack, [[http://oi67.tinypic.com/1411b9j.jpg his eyes look creepier than normal]]. Fortunately, Aku is surprised to learn that [[LoyalPhlebotinum the sword can't even hurt Jack]].

[[AC:Jack in Egypt]]
* [[AnimalisticAbomination The Minions]] [[HumanoidAbomination of Set]]: a trio of bestial, demonic warriors who were created by the [[GodOfEvil evil god]] [[Myth/EgyptianMythology Set]] to wreak chaos and destruction upon AncientEgypt, until they were [[SealedEvilInACan imprisoned in a tomb]]. What makes them scary is that [[TheSpeechless they never talk]], [[NighInvulnerable are immortal and invincible]], [[TheJuggernaut and nearly unstoppable to just about any mortal opponent they come across]].
** When Aku and an entire unit of his [[MechaMooks robotic soldiers]] locate the Minions' tomb in the Egyptian desert, Aku removes the lid from their prison, and he watches with amazement as the Minions immediately jump out and [[CurbStompBattle obliterate all the robots]], tearing each of them into shreds within a few minutes (it would be much worse if those machines were humans). Impressed with their skills, Aku orders them to find and kill Jack.
** After Jack realizes they are loose, [[https://www.youtube.com/watch?v=0pufp-IaJeo&t=1m20s they just open up wailing on him]]. [[NoHoldsBarredBeatdown They outright smash Jack in such a brutal way]], that if it was aired on Creator/AdultSwim? Jack would be outright ''bleeding'' from the wounds he got.
--->'''Jack:''' "[[EliteMooks These creatures are more powerful]] [[AlwaysSomeoneBetter than anything I have ever encountered]]..."
*** But these are creatures that Jack himself '''cannot''' stop. Whenever he cuts off their limbs, [[HealingFactor they grow back instantly]], and the Minions continue the chase. Jack is forced to run and go on the defensive for the rest of the episode, as he tries to locate artifact pieces that will help defeat the Minions, nearly getting killed in the process. To say it's tense is an understatement.
*** Jack had to rely on the power of a ''god'' to destroy them. The god himself, [[Myth/EgyptianMythology Ra]][[note]]The very same Ra that, along with [[Myth/NorseMythology Odin]] and [[Myth/HinduMythology Rama]], destroyed the evil entity that would later spawn Aku[[/note]], was pretty creepy as well due to how [[CurbStompBattle he killed all the Minions with very little effort]]; as well as the fact that he towers over Jack, and that he does nothing but stare at Jack, [[TheVoiceless not even speaking]] when Jack asks him if he knows a way to return to his own time.

[[AC:Jack and the Traveling Creatures]]
* As Jack tries to fight off the Guardian of the Time Portal, he finds that he is [[AlwaysSomeoneBetter outmatched by a far more powerful opponent]]. The Guardian has slayed many more would-be time-travelers before Jack, and (correctly) declares that our hero [[FailureIsTheOnlyOption will not be successful either]].
** The fight ends with the Guardian delivering a [[CurbStompBattle very one-sided]] [[NoHoldsBarredBeatdown and brutal beating]] that knocks Jack into unconsciousness, and then the Guardian is about to finish off Jack ''by dropping a boulder on him''; but he only relents and spares Jack after [[spoiler:the time portal shows him a vision that Jack is indeed TheChosenOne of prophesy, who may (eventually) go back in time]].

[[AC:Jack and the Creature]]
* When the {{greaser| delinquents}} robots attack Jack and knock him unconscious, the normally [[BewareTheSillyOnes goofy]] and [[BewareTheNiceOnes friendly]] Creature [[DisneyDeath believes that Jack died]], and now it's '''[[UnstoppableRage pissed]]'''. The Creature ''[[HulkingOut transforms into a horrifying monster]]'' and [[RoaringRampageOfRevenge chases after the robots]], [[MookHorrorShow mauling each of them to death]]. The last robot is absolutely ''terrified'', hiding behind a rock and futilely praying that he'll make it. By the end, [[KillEmAll the Creature has left nobody alive]]... (well, except for Jack).

[[AC:Jack and the Haunted House]]
* Basically the entire episode? Here, Jack follows a scared little girl named Kuni to an old, decrepit house. He receives several nightmarish visions about what happened to Kuni's family (her brother, mother, and father) who used to live there, all of them appearing to have been attacked and taken away by some faceless horror. Not even Aku, just some [[EldritchAbomination nameless demonic being]] with a sadistic streak. And that's only the first half.
** The creepiest part is when Jack walks into the [[MoodDissonance eerily tranquil]], fake tea room. Kuni's family are seemingly okay and invite Jack to drink tea and chat with them, in a room that looks bright and pristine (unlike the rest of the house). Jack is (correctly) suspicious of this situation, but he soon gets lulled into a false sense of security. Kuni looks at Jack nervously, while her family [[StepfordSmiler pretend that everything's alright]]. Then the ruse is dropped when the brother, mom, and dad start convulsing violently, finally revealing the demon who casted the illusion. Then the demon captures Jack and takes him to another dimension where the family's souls are also held captive.
** '''The Demonic Spirit''' (pictured right on this page, and for a very good reason) is easily the most frightening character ever put in the show. In any scenes with the Demon Spirit present, the animation shifts to [[ArtShift "sketchy" black and white]], where every line is visibly [[LineBoil chattering]], and the sound is [[HellIsThatNoise distorted into a cacophonous noise]]. It's as if the sheer otherworldly force of whatever this thing is is overpowering the [[MediumAwareness physical cartoon]], blowing out both the colors and your speakers like it's going to [[TheFourthWallWillNotProtectYou burst forth from your television at and second]] (similar to Tyler's scene in ''Film/FightClub'' where he talks to the audience as the celluloid starts quaking in the projector).
*** Then check out the creature's appearance. Unlike Aku, who has a simplistic design, this creature is drawn [[http://3.bp.blogspot.com/_3NbEuEB-o9Y/Sfdy3hCfKnI/AAAAAAAACUk/PZqUZrYjrHI/s200/Samurai%20Jack%2035-03.png in a disturbingly realistic way]], almost resembling a [[{{Satan}} certain creature.]]
*** Unlike most villains who appear on the show who all either work for Aku or are involved with him some way, this Demonic Spirit ''has nothing to do with Aku''... or at least, that seems at first glance, [[TheSpook since we know nothing of what it is]], except that it [[YourSoulIsMine wants to steal human souls]].

[[AC:The Birth of Evil]]
* As the title would suggest, this episode reveals [[CosmicHorrorStory the origin of Aku]]. Millions of years ago, he was originally [[EldritchAbomination some sort of giant, shapeless, featureless entity]] that roamed around outer space, [[OmnicidalManiac attempting to destroy everything around it]]. The gods [[Myth/NorseMythology Odin]], [[Myth/EgyptianMythology Ra]], and [[Myth/HinduMythology Rama]] fought this ''terrible thing'' and almost destroyed it, [[FailedASpotCheck except for a smaller fragment that got]] [[NiceJobBreakingItHero cut off and drifted away to Earth]]...
** When this primordial monster crash-landed on prehistoric Earth, it took the form of a meteor that [[PhlebotinumKilledTheDinosaurs burned nearly all of the dinosaurs]] down to charred skeletons, then proceeded to gobble up the few remaining survivors. The carnage is ''abominable''.
** Soon, proto-Aku became a [[BlobMonster giant puddle of living black goo]] inside the earth that would send large, deep cracks through the ground. The cracks were filled with a black tar-like substance, and it would then ''[[ExtremeOmnivore absorb living creatures]]'' to get stronger. This includes an unlucky [[ToServeMan group of cave-people]]. At one point, a man calls out for his dog, goes to the back of his house, and sees one of the cracks filled with black goop, and ''half the dog's leash sticking out''. Doubles as a TearJerker when we hear the man's anguished and horrified screams.
*** Bit of a [[FridgeBrilliance meta-example]]: [[ShoutOut the dog's name is]] '''[[{{Manga/Parasyte}} Shinichi]]'''. Considering the fact that Aku was little more than a parasitic life-form growing bigger and stronger from devouring other life-forms at this point in time, and the fact that the ''Parasyte'' manga features a dog overtaken by a parasite eating another dog, creates a creepy crisscrossing reminder of each work's NightmareFuel.
** Worse, every time the goo swallows up a living creature, a giant black tree springs out of the sludge with violent crackling sounds. Pretty soon, so many creatures have been devoured it has grown into a veritable ''forest'' encroaching upon civilization and threatening to engulf Japan.
* Later, the Emperor (the soon-to-be father of Jack) goes on a mission to try and destroy the monster, charging into the forest of black spiky trees, along with an army of samurai in tow. As they get closer and closer, more trees burst up from the ground, and we [[GoryDiscretionShot hear samurai start screaming as their horses (now riderless) run by the Emperor]].
** The scene where the blob monster evolves into Aku. [[NiceJobBreakingItHero After the Emperor tried to kill it]], the magic arrow he used instead has the opposite effect. At first, it seems like it worked, but then we're shown the two red flames that would become Aku's signature [[UnusualEyebrows flaming eyebrows]]. Then, we see all the trees in the pool recede... only to be replaced by one singular towering mass that gushes out of the pool. Its appendages creak, groan, snap, and contort into place until they form that all-too-familiar shape of the Shogun of Sorrow from behind, just like in the first episode. Then we see the flaming eyebrows ignite atop his head, and his eyes ''snap'' open for the first time. And ''then'' come his first words.
-->'''Aku:''' ''(groaning and wondering how he came to life)'' "Oh..." ''(spies Jack's father)'' "OH! ''YOU!!'' '''THANK YOU!!!'''"
-->'''Emperor:''' "''NO!'' [[GoneHorriblyWrong My intention was to]] ''[[GoneHorriblyWrong destroy you!]]''"
** And then immediately afterwards, the Emperor futilely tries to attack Aku again. So Aku ties him up to a black tree, slips into the ground, then pops back up by his kingdom and attacks it. When the king is bound in a {{crucified| hero shot}} pose and {{forced to watch}} while [[BigNo screaming in horror]], just imagine how terrified the citizens of his city were.
** During the final battle between the Emperor and Aku, Aku slips into the armor of fallen soldiers and [[MesACrowd makes clones of himself]] to surround him. They all promptly [[EvilLaugh laugh]] at him and then just... stop. It's surprisingly unnerving.
[[/folder]]

[[folder:Season 4]]
[[AC:Samurai vs. Ninja]]
* It gets downright hectic and overall a bit eerie, since you have two of the deadliest warriors hunting one another in the art of ninjutsu. All the while, they're both clad for the appropriate elements. One fights in the shadows, while the other fights in pure blinding light. The whole fight in the very wooden tower is both a respectful mix of NightmareFuel and ParanoiaFuel. And to add even more fuel to an already deadly, adrenaline-rushing encounter? The soundtrack throughout the whole fight! ... Horror chords and all. [[http://www.youtube.com/watch?v=bmkxsQnNujI Here is the fight in its entirety]].

[[AC:Samurai vs. Samurai]]
* This is a mostly a goofy episode involving Jack dealing with the [[SmallNameBigEgo Da Samurai]], until the last few minutes. Suddenly, an ''army'' of Aku's assassin robots from earlier in the episode show up, but these ones are {{dual wielding}} swords and opening the panels in their heads to reveal [[UncannyValley creepy long faces with razor-sharp teeth]]. That alone is scary enough, but after Jack finally defeats the entire army, they all combine into what can only be described as a MechanicalAbomination. Thankfully, it goes down easier than the army did, but it's still freaky to watch.

[[AC:The Aku Infection]]
* Aku unwittingly infects Jack with a [[TheVirus small piece]] [[TheCorruption of himself]], and soon Jack starts to [[BodyHorror look scarier]] [[TransformationHorror and scarier]] as time goes on.
-->'''Jack:''' "I'm getting..."
-->''(Lifts up cloak to reveal Jack is looking and sounding more like Aku)''
-->'''Jack:''' "...'''STRONGER'''."
* The Aku-possessed Jack carves up an innocent robot bystander's face [[DisproportionateRetribution for bumping into him on the street]]. We get a very close, slow shot of this happening; never before has the SymbolicBlood looked so terrifying.
* Jack disguises his changed features with a makeshift cloak, and goes to the adorable Lizard Monks; Jack wants help, Aku wants to find and eliminate them. By the time he meets them, it's deliberately ambiguous who's in control, and how far the changes have spread. All that's visible by that point is his eye, which ''cries'' when he tries to talk to the avuncular leader of the monks -- and then he tears the cloak off and reveals the eye is all that's left, the rest of him is Aku.
** None of the monks he attacks in the ensuing fight are cut in half by the sword, but they're sure knocked around and don't stand a chance until their leader throws a potion in his face.
** Even then, a restrained Jack with many patches of the infection scattered across his skin is told that all the monks can do is slow the progression, but it's up to him to fight it off. He says he cannot and begs for help, sounding broken when they can't give it to him. At that point his body transforms completely, and Aku bellows that he'll eat them all.

[[AC:The Princess and the Bounty Hunters]]
* A [[FiveBadBand group of bounty hunters]] team up to capture and/or kill Jack once and for all, by attempting to attack him all at once. Unfortunately, it backfires and Jack defeats them all, with the Princess being the last member of the group standing. Jack ''seems'' to have ''killed'' living beings, ''flesh and blood'' ([[FlipFlopOfGod or not]])[[note]]Creator/GenndyTartakovsky gave a very unclear answer about this in an interview[[/note]], as opposed to robots or demons. Pretty grim when you think about it.

[[AC:Tale of X9]]
* X9's flashback of when he "[[RoaringRampageOfRevenge lost control]]" upon seeing his fellow X-Models killed.
* X9 receiving a call from Lulu when she's held hostage by Aku. From her end, it's PlayedForLaughs. From his end, it's PlayedForDrama. It's AdultFear on two levels, one where your pet goes missing, and one where someone you loved wanders off and gets taken hostage.
** Left with no other choice, [[spoiler:X9 accepts Aku's latest (and last) mission for him: to find and kill Samurai Jack. X9 chases down Jack in an abandoned building, and to say it's tense is an understatement. The encounter ends with [[JumpScare Jack slicing down X9 from behind]], [[ShootTheShaggyDog making his efforts to save Lulu worthless]].]]
** [[spoiler:There's a lot of FridgeHorror from the fact that not only is her owner dead, but Lulu was still last seen ''under Aku's captivity''. It's all too likely that Aku may have [[YouHaveOutlivedYourUsefulness put down Lulu after her usefulness as a bargaining chip to manipulate X9 had ended]]. [[NothingIsScarier The poor dog's ultimate fate is deliberately left unknown]]. And it is a known fact that the protoplasm that Aku used to be [[EatTheDog devoured a dog named Shinichi.]] Let's hope Aku [[FridgeHorror didn't do THAT!!]]]]

[[AC:Jack and the Baby]]
* The AdultFear:
** Your (surrogate) infant getting sick.
** Your baby's been kidnapped by monsters, [[WouldHurtAChild who may]] [[EatsBabies eat the poor child]].
** The ending touches upon the AdultFear that your young child (very young, in the Baby's case) has [[HarmfulToMinors witnessed something not appropriate for kids to see]]. And it may have ended an aspect of their [[ChildrenAreInnocent innocence]] prematurely.
* The fact that it was the last episode of the first 4 seasons. Horrifyingly enough, the series' abrupt cancellation left Aku '''[[KarmaHoudini completely undefeated]]'''. [[FridgeHorror The rest remained to the viewers' imagination for more than ten years waiting...]] [[CrowningMomentOfAwesome until the release of Season 5!]]
[[/folder]]

[[folder:Season 5]]

[[UnCancelled Season 5]] raises the horror to new levels; now that the show has moved to Creator/AdultSwim, it gets to have a [[DarkerAndEdgier little more freedom]] [[BloodierAndGorier with its violence]], leading to some very dark and disturbing scenes that are guaranteed to leave you sleeping with both eyes open.

[[AC:XCII]]
* ''The very first scene'' opens with Aku's Beetle Drones destroying a village and chasing after the {{sole survivor}}s: a mother, her young daughter, and her baby. They try to escape, but the Beetle Drones encircle them. [[FaceDeathWithDignity All they can do is use their antennae to communicate their love for each other and await their inevitable and brutal demise]]. Granted, Jack saves them just in time, but still, it really sets the tone for the rest of the season.
* Throughout this episode, we see that Jack has been suffering from a hell lot of [[ShellShockedVeteran post-traumatic stress]], in the form of guilt, depression, and nightmarish hallucinations:
** In each of the hallucinations Jack sees... SOMEONE on horseback. We're never told or fully shown who it is... but whoever it is? It's something that TERRIFIES Jack. Yes JACK IS TERRIFIED OF SOMETHING.
** Jack's first hallucination. While drinking from a stream, he starts to imagine leaves falling from a nearby tree are his parents and the tortured forms of his people. At the end of the vision, we get to see ''hordes of zombie-like people floating downstream'', screaming and reaching out for Jack to save them. ''Jesus Christ, Tartakovsky''.
--->'''Mother:''' "You left us all... to... '''''[[VoiceOfTheLegion DIIIIIIE!]]'''''"
** The second hallucination starts with Jack sitting by the fire while eating a dead rat, when he sees a vision of his father in the fire, asking why he never came back. As Jack desperately tries to explain himself, the vision gets bigger and the fire spreads out of control as his father gets angrier. It ends with Jack's father screaming at his son, accusing him of abandoning his destiny and people while making the mother of all {{nightmare face}}s.
--->'''Father:''' '''''"HE DESTROYED EVERYTHING! EVERYTHING IS BURNING! YOU'VE FORGOTTEN YOUR PURPOSE! [[NightmareFace YOU'VE]] [[VoiceOfTheLegion FORSAKEN US!]]"'''''
** The third and final vision shows Jack imagining small children ([[DeathOfAChild the kids from the village who were murdered by Scaramouche]]) futilely pleading for his help. But what makes it frightening, is not so much what it contains, but when it happens: during the middle of the fight with Scaramouche. Jack is ''still in danger'' when he starts hallucinating! Scaramouche even uses his distress to land a shot on him! While the attack wasn't lethal, next time he might not be so lucky. It really does paint a picture that Jack is a broken man, and that these hallucinations (much like in real life) aren't just limited to when he's alone. They could happen anywhere, at any time no matter what he's doing or what kind of danger he's in, making Jack his own worst enemy.
* Jack watching the dead bodies of the slaughtered town (by [[PsychoForHire Scaramouche]]). Unlike previous seasons, this is the first time we witness a very graphic image of dead people (including young men and children), [[DarkerAndEdgier setting the gritty tone of the season]]. For obvious reasons, Jack is visibly horrified.
* Scaramouche, despite being a [[BewareTheSillyOnes silly villain]], [[AxCrazy slaughtered an entire village]] just to draw Jack out. The fact that Scaramouche was able to wipe out the whole settlement by himself is also unsettling, indicating that he is a OneManArmy. No {{mook}}s needed, just himself.
** What makes the above even scarier is that Jack ''allowed it to happen''. He was in the area when Scaramouche attacked the village, he saw the smoke rising from the village, but he ''chose'' to ignore it and go about his business. It takes a severe attack on his guilt to get him to go back... '''days later'''. By then, Scaramouche has massacred everyone in the village. To summarize: Jack's inaction allowed Scaramouche to slaughter an entire village of innocents, which really sets the tone for the season and shows just how ''broken'' Jack is. You ''know'' things have gone bad when TheHero of the series ''stops'' helping people in need.
*** It's even harder to stomach knowing the Ultra-Robots destroyed settlements for the exact same reason -- to draw Jack out -- and he was unable to get to these places in time to save their victims. This time, he ''did'' have time to make a difference, but chose not to because he's used to these kinds of outcomes, and the result ended up being the same. Talk about a ShaggyDogStory.
** Scaramouche having a dao that can move under his magical control is reminiscent of the way Aku's banshee took control of Jack's sword. It's later shown that Scaramouche's body is powered by what appears to the essence of Aku when it spills out of him, so it seems to be one of Aku's specialties. Now imagine if Aku found a way to manipulate Jack's sword [[OhCrap himself...]]
** At some point during the fight, Scaramouche pulls out his VibroWeapon. After destroying one of Jack's daggers with it, he casually throws it into his other hand and hits a pillar with it saying that no one is better than him at bladework. Scaramouche, who throughout the entire fight has been nothing but jovial, fun loving, and even downright polite [[SuddenlyShouting suddenly screams ''NO ONE'']] at Jack as the pillar explodes. He then goes right back to jovially scatting and trying to kill Jack. The rage just comes so quickly and leaves just as quickly, perfectly showing how frustrated he is that he hasn't killed Jack yet and [[FauxAffablyEvil how unhinged he is beneath the facade]].
** The way that Scaramouche dies is pretty gruesome. First, Jack slices him in half with his own dao, causing a horrific amount of oil to spill out of him. His body then explodes after he is killed, but his head goes flying and lands in front of the foreground. His face is etched with pain, and his lifeless eyes stare straight at the viewer while a ScareChord plays.
*** [[spoiler:Although this is mitigated by the fact that in "Episode XCVII", Scaramouche's severed head somehow reactivates, and he merrily boasts of how he's still alive.]]
* A big source of FridgeHorror in this episode is TheReveal that '''JACK LOST HIS SWORD'''. He lost the ''only'' weapon on Earth that can harm Aku. And while he's managed to keep that fact hidden so far, it's only a matter of time before Aku himself finds out about it. Good luck, Jack. ''You'll need it.''
* Every single scene with the Daughters of Aku. They are the seven daughters of a crazy female cult leader who [[ReligionOfEvil worships]] [[GodOfEvil Aku]], and she has been raising and training them since birth to become assassins with one goal: to kill Samurai Jack. All the while, these girls are deprived of a normal childhood.
** The first scene showing their birth was rather disturbing. We are basically watching a woman give birth to septuplets in a dark room '''without any anesthesia or any proper medical aid'''. Most real-life mothers wouldn't ''survive'' such an ordeal in such conditions. Her screams of pain combined with the rhythmic chimes of the gong made the whole ritual look like a HumanSacrifice, though without any killing.
** The worst part of it all is how even as little girls, [[AbusiveParents their own mother]] puts them through [[TrainingFromHell extremely harsh]] [[TheSpartanWay non-stop training]]. Any time they fail a test or get distracted, she throws them over to older women [[WouldHurtAChild to give them]] [[NoHoldsBarredBeatdown a brutal beating]]. She even discourages her daughters from helping out their own sisters when they're down or wounded, [[TheSocialDarwinist believing them to be too weak to live]].
** The sisters' graduation test is an impressive showcase of their talents and abilities, and they complete the whole scene without breaking stride... even the part where one of them (Ashi) brains one of her instructors with an arrow. It quickly becomes clear that this isn't just another exercise, it's actual ''mortal combat'', and all the trainers that guided them from birth are dropping like flies. After four seasons of having every casualty restricted to robotic lifeforms, it was quite a shock to see actual flesh-and-blood deaths introduced with such nonchalance and ruthlessness. It honestly made one fear for Jack's well being. There's also the implications that the High Priestess willingly wiped out her own cult [[YouHaveOutlivedYourUsefulness as sacrificial pawns who served their ultimate purpose]] (even the giant woman) in the wake of training seven daughters to fight for Aku, and that the best fate that one could have in the cult, or perhaps the ''only'' fate that awaited them was to die, and that they ''willingly'' died seeing themselves as martyrs for an impeccably misguided cause.

[[AC:XCIII]]
* The way that Aku and his "[[MesACrowd therapist]]" yell [[SuddenlyShouting "DIE!"]] at the beginning of the episode. It's hammy and over-the-top, but in a chilling way that shows that, much like Jack, the 50 years appear to be taking a toll on his mind as well.
* The Daughters of Aku hunting Jack. The whole scene felt like the "Jack in Egypt" episode. They're systematic, thorough, and well-trained. When they lose track of Jack, they don't panic. They hide in the shadows at various points in the ruins they've chased him into to lull him into a sense of security, then ''strike'' from the darkness, letting the others know his location. After that, it's not even really a fight. It's an escape. Jack is forced to hide in a ''coffin'' at one point, looking more terrified than we'd ever seen with only a firefly to give him light, as if silently begging for them to go away... which they obviously won't. The light is slowly snuffed out... and the next thing we see out of the darkness is all seven Daughters shattering the coffin he's in, Jack springing out of it through desperation. It's the worst trial Jack's been through for the entire series, bar none.
** At one point during the chase, while hiding from the Daughters, Jack is confronted by another vision of himself, which tries to ''[[DeathSeeker talk him into]] [[DrivenToSuicide committing]] [[{{Seppuku}} "honorable" suicide]]''. If his enemies can't end him, Jack may as well try to do it himself...
** Stripped of his weapons, beaten, bruised, and forced to constantly evade the Daughters of Aku given their numerical advantage and constant ambushes, Jack is forced to hide amongst a vast amount of coffins all centered around the skeleton of an ancient king. The episode already highlighted it earlier to some degree, but the sheer terror Jack has is unlike anything else he's ever shown before during this. He's absolutely shaking, uncertain, and desperately, silently begging for a firefly to go away before he's exposed to a threat he cannot beat like this. And his bedfellow is the skeleton of one of the king's followers, who is glimpsed by the light of the firefly. The fact that Jack has been forced to lie down with the bones of the departed to find refuge is so macabre it hurts.
** [[spoiler:At one point, Jack is forced to flat out run from the Daughters of Aku, racing down twisting, turning passages in the dark, then we get a JumpScare when Jack actually runs into one of the girls, who has managed to outmaneuver and get ahead of him. It's only fortunate for Jack that separating from her sisters proved to be a fatal mistake for her.]] Leading to...
*** [[spoiler:We actually get to see Jack '''[[GutPunch killing]]''' a human being up-close for the first time. He spent the episode believing that the Daughters were [[WhatMeasureIsANonHuman just another one of Aku's machines]], and after being confronted by one of them, he ''slices'' her neck. That is ''genuine blood'' Jack's seeing. While it was undeniably in self-defense, his reaction is one of genuine guilt and horror.]]
*** The sound made during the [[spoiler:SlashedThroat]] is probably one of the most brutal noises in the entire series up to this point. [[spoiler:It isn't just skin being penetrated with a blade and blood splashing out, there's almost a bone-like sound adding a disgusting edge to the strike. Odds are, Jack was inches away from dealing out a full-on decapitation.]]
** The music that plays throughout the Daughters' hunt for Jack is terrifying. It is a cover of Music/EnnioMorricone's "The Ecstasy of Gold", from ''Film/TheGoodTheBadAndTheUgly''. Now what does ''that'' say to this conflict?
* The side-plot with the lone white wolf fighting against a pack of tiger-like alien beasts. [[spoiler:While the blood from the Daughter was more subdued, the animal fight is a total bloodbath where everyone involved seems to die gruesomely, quite a [[AnimalMetaphor bad omen]] for Jack and the Daughters.]]
** Just the appearance of the alien tigers. Think of the Ultimate Chimera from ''VideoGame/MOTHER3'', but painted green with stripes and covered in fur. Not to mention the demonic roaring...

[[AC:XCIV]]
* After watching an entire series of Jack only getting scratched, beaten, and broken down, the first portion of this episode shows him bleeding '''gallons''' of blood from his stab wound.
** Worse, we see Jack pass out over and over from this bleeding for what seems like days on end. Then he encounters a seemingly normal frog that {{suddenly shout|ing}}s, '''"THEY'RE COMING!"''' and it becomes unclear if that is just a hallucination or an actual sapient frog that can talk trying to warn him of danger, either way being very disturbing.
** While Jack is still bleeding out and retreats for shelter, he starts to see the green spectral samurai again. Only now, with Jack on the verge of death, the Omen starts ''following'' him like some sort of [[TheGrimReaper Grim Reaper]].
** Especially when [[spoiler:Jack and the White Wolf meet personally, as they both are covered from head to toe in symbolic lines of blood across their bodies. It's quite a miracle that Jack and the Wolf somehow survived these near-mortal wounds. And the tension beforehand where Jack is forced to pick up the dagger used to wound him as his only means of defending himself is proof of how backed into a corner Jack is and that this is his only option left if he wants to live]].
** Jack seems to have reached a newfound level of pain, if not a plateau threshold, in this one episode alone. Never before and never again do we see him in such physical turmoil, because for the first and only time, a weapon is ''stuck'' in him like glue and the only way to be rid of it is to pry it loose by force.
** What is probably the most difficult part of the episode to get through is watching Jack finally force himself to extricate the dagger from his chest. It is ''not'' pretty- he has to slowly work it out of his body as it's wedged in VERY tightly, during which time he squeezes his eyes shut, sweats bullets, and grits his teeth, steeling himself for the pain of ripping it out. Then, as he ''does'' pry it loose, darker-colored blood from his insides begins to ooze out and he groans very weakly, having grown extremely tired. Finally, he yanks the blade out and screams with INCREDIBLE pain... then promptly passes out one more time from the agony. Keep in mind this is the kind of pain that is so excruciating that a person would risk biting their tongue from gnashing their teeth and would have to have a stick or something else sturdy to bite on!
* At one point, Jack is taunted by another apparition of his past self... only now the apparition is twisting and contorting in strange poses with fanged teeth, and bears a constant cruel expression on his face. The animators are taking a character design we know and love, and making it look... ''[[DerangedAnimation so wrong]]''. To elaborate: this apparition appears inhumanly tall and slender, like a HumanoidAbomination. His face is more narrow. He moves inhumanly fast. He has sharp, jagged teeth like a shark, and his expressions showcase them quite well, being the very embodiment of NightmareFace: cruel scowls, {{Psychotic Smirk}}s, and {{Slasher Smile}}s galore. Lastly, he speaks in a much more malicious and psychotic tone, [[spoiler:getting very creepily excited over the thought of more killing and mocking Jack, trying to goad him into embracing BloodLust]]. Not to mention he resembles Mad Jack, or how Aku portrayed Jack in his fairy tales. The [[TheReasonYouSuckSpeech brutal speech]] combined with the pained "no" Jack gives in response made the whole scene feel like he was tortured.
-->'''Inner Jack:''' Look at you. You've survived worse. This isn't about your pathetic little cut, it's about [[spoiler:that girl you killed. We've never killed a human before, have we? Sure, ''mountains'' of robot corpses. But ''this''... This was the first human being. ''Real flesh and blood.'' What happens when the others find you? You'll have to kill them too. ''Can you?'' Will you be able to when the time comes? Maybe ''they'' will kill ''you?'' (''{{Beat}}'') Or is ''that'' what you ''want?'']]
-->'''Jack:''' (''pained'') No.
** [[spoiler:That entire statement where Inner Jack [[WhatMeasureIsANonHuman mentions the scores of robots Jack slew compared to one human life]] and throws it back in his face.]] It's almost [[LeaningOnTheFourthWall as though the writers are throwing the fact they are releasing the handbrake on the violence from past seasons in our faces as well.]]
* In Jack's childhood flashback: the way that [[PapaWolf his father]] dispatched the assassins coming after them, while awesome, could also be terrifying due to how ''swift and brutal'' it is. At one point he ''[[HalfTheManHeUsedToBe cuts a guy in half]], with his blood splattering through the carriage window [[BloodSplatteredInnocents into poor Jack's eyes]]''. Needless to say, little Jack is scared to see all this raw carnage up-close, [[AssholeVictim even if those thugs had it coming]]. No wonder Jack doesn't like killing.
* Jack's wound continues to bleed out relentlessly, and it forces him to stitch it up by improvising a thread and needle with an animal bone fragment and some wood fibers. We see his silhouette in the dark cave wincing in pain as he seals up his own wound in a crude manner. It leaves a remarkable scar on his chest, his first lasting wound from his time in the future.
** Heaven only knows if the way he administers self-surgery is even ''sanitary''- he's had an open wound for who knows how long and the means he's closing up his injury ''can't'' be sterile (he didn't even cauterize them with fire at the very least)- the only thing we can count on is his unbreakable willpower to stave off death, and that includes infection; he fought off ''Aku's pure evil'' infecting him, for pity's sake! If he can fight off that, he can fight off any infection, really!
** It's implied that Jack's recovery is a very slow and painful one with the passage of time. At the start of this season, it was clearly fall in the region of the world he was in. By the time he reaches shelter, fall is giving way to winter, and then by the time he has fully healed, winter has come entirely. And that gives plenty of time for his enemies to dig themselves out of oblivion and catch up to him. Worse, he has been caught ExposedToTheElements in the dead of winter considering all his clothing has been stripped from him but the tatters of his underclothes. For a normal person, this kind of bleak survival situation would probably be their downfall.
* We see the true extent of the Daughters of Aku's abusive upbringing, and how it affects their interactions with each other and the outside world.
** When the Daughters escape the destroyed temple, [[spoiler:they comment on their deceased sister that "Death is failure", and proceed to leave her corpse to rot without batting an eye.]]
** They believe that a simple male deer must be a minion of Aku's due to sporting antlers similar to his own. And when the buck kisses a doe, [[EvilCannotComprehendGood they are all baffled]] [[WhatIsThisThingYouCallLove by this display of affection]]. One of them even says "I don't like it" in a mix of disgust and naivety. It's actually quite sad. Heck, before the kiss, [[TheSocialDarwinist they expected the buck to show his dominance by brutalizing the doe]].
* Upon coming to terms with his guilt and that, like his father, [[spoiler:he'd have to take lives if he wanted to complete his mission]], Jack's first act is to attempt to prevent a fight. [[ShutUpKirk The Daughters of Aku reject this notion]].
** [[spoiler:Not even seconds later, he pops out from beneath their feet in the snow and harpoons two of the sisters before they can even react.]]
** [[spoiler:After Jack kills one of the Daughters with a thrown sword through the chest, her sister just pulls it out to fight Jack with it, without even ''looking'' at her.]]
** One of the Daughters spears a crow through the neck with her sai and pins it to a tree so efficiently it doesn't even bleed. [[DiesWideOpen It gets killed so fast its eyes stay open.]] Scarier still, because the snowdrifts are obscuring the trees, it looks as though the crow has been pinned to the air itself. Through process of elimination, it appears Ashi was the one who made the kill, being the one to wield the kusarigana (chain with a sickle attached to one end and a spiked weight to the other.)
** [[spoiler:When Jack decides to drop the Daughter's weapon and resort to using his [[GoodOldFisticuffs bare hands]], he kills a Daughter by punching her in the face hard enough to make her neck snap instantly and her body spin out and fall to the depths.]]
** Jack willingly lets Ashi attack him with the bladed weight on the end of her kusarigana so he can drag her over to attack her, which bites into his arm with a fresh gush of blood. After having been stabbed and cut up several times, Jack probably is unfazed by this pain.
** [[spoiler:In the end, the defeated Ashi starts fanatically ranting about killing Jack, even after having seen all of her sisters die at his hand, and likely being seconds away from death herself.]]

[[AC:XCV]]
* When he first wakes from his fall into the snow, Jack's mind quickly flashes back to the fight with the Daughters of Aku, only he imagines one of them with the ''real'' Aku's face in place of the mask, [[UncannyValley distorted into a more violent looking sneer with the same humanoid proportions of one of the Daughters]], kind of like a mix between a JumpScare and a FreezeFrameBonus. It just goes to show in Jack's eyes, the fight isn't over even when the enemies have fallen, and that the Daughters of Aku were NotSoDifferent from the genuine article.
** As Jack recollects himself after his most recent battle [[spoiler:when several Daughters of Aku met their end at his hands]], he gradually gets surrounded by droves of crows, [[spoiler:perhaps drawn by the carnage that just took place, and maybe angered by the fact one of the crows died in the crossfire. When he discovers a blood trail, he follows it to find Ashi lying seemingly dead on the ground. Then, the crows start ''mocking him''.]]
--->'''Crow:''' [[spoiler:"'''MURDERERRR!!'''"]]
--->'''Another Crow:''' [[spoiler:"'''''KILLERRRRR!!!'''''"]]
--->'''Jack:''' [[spoiler:"[[RuleOfThree No... no...]] '''[[BigNo NO!]]''' ''THEY CHOSE THE PATH...!'' ''THEY'' '''''CHOSE!!!'''''"]]
* Just how '''[[AttackOfTheFiftyFootWhatever huge]]''' the [[{{Kaiju}} gigantic monster]] that swallows Jack and Ashi is really rather terrifying. As the two explore and try to escape from it, they find other scary creatures inside this enormous body.
** It's so incomprehensibly massive, that even when a portion the size of a small city breaks the surface, we still can't see it in its entirety. [[EldritchAbomination A creature of that scale]] wouldn't be out of place in a CosmicHorrorStory.
** Even worse; it's implied that Aku has been ''deliberately creating (or spreading) these things'', which further provides some [[FridgeHorror disturbing implications]] regarding [[DeathWorld just how screwed up]] the world has become [[CrapsackWorld under Aku's rule]].
* Ashi's ''relentless'' fanatical ranting and borderline ''psychotic'' raving for about a minute straight after being saddled to Jack shows how deeply poisoned with hate she's been. It's a wonder he didn't just ''muzzle'' her. Worse, she shows absolutely zero concern about [[spoiler:the loss of all her siblings and being the only apparent survivor, now alone and the only child]]. She instead stays steadfast and unfeeling anything but hate like she was conditioned, only showing self-preservation toward fulfilling the one purpose that she was born for -- killing Jack.
** For nearly the entire episode, Ashi demonstrates the corrupted version of a LargeHam; just about everything that comes out of Ashi's mouth is IllKillYou, and ''she won't shut up''. Heck, every single thing she says and does is basically a death threat, be it thinly-veiled or over-the-top, and a never-ending tirade. Her hate for Jack makes her so blind that she's nothing but an obstacle to their survival (when monsters attack them, she ''still'' has her sights set on Jack first), and when she hasn't the means to hurt Jack, she just hurls insult after insult at him in a way that would make [[FloweryInsult the Scotsman]] ''blush''. Yet Ashi fails to take the hint that nothing she's saying is demoralizing Jack in the slightest, so she starts telling Jack to die passively, and claiming that Jack is (as good as) dead when they've both been swallowed just to spite him in her misery. And yet at one point, Jack actually ''snaps'' at her -- and this is the man who took all of the Scotsman's ''and'' [[JiveTurkey Da Samurai's]] badmouthing without batting an eye.
** Yet somehow, Jack's time spent with Ashi gets him to be the most chatty he's been so far at this point in time, which eventually puts a damper on his hallucinations (the ghostly figure on the horse appeared back-to-back in each of the episodes of this season until now, when it was nowhere to be seen and the ones that do appear are not morbidly psychotic or frightening). It's very sad to know a deranged TykeBomb is the one thing causing Jack to recover his grip on reality, and that because he had no one to talk to in all this time, [[GoMadFromTheIsolation his mind really, really crumpled]], so that may explain why he didn't shut her up: because he wanted someone to talk to and probably pitied her own mental twisting, too.
* The various smaller monsters that all live inside the larger monster; for example, the blue insectoid creatures with huge rodent-like buck teeth. And there's a [[ZergRush very large swarm of them]], so Jack and Ashi can only flee instead of killing them all. Worse, while Jack is fighting them off, Ashi keeps trying to interfere and get him killed. [[TakingYouWithMe Her fanaticism drives her to not even care]] [[UngratefulBitch that Jack wants to save both their lives]].
* Ashi remembering her mother's task for her.
-->'''High Priestess:''' "''Ashi... Ashi...'' '''''Ashi...''''' '''[[JumpScare KILL]] [[SuddenlyShouting THE]] [[NightmareFace SAMURAI]]!!!'''"
** Just knowing that Ashi remembers her mother's appearance by her mask in a warped, demonic form, and not by her ''real face'' is [[TearJerker heartbreaking]]. What kind of mother keeps her face hidden from her own children their entire lives?? Not only does it show how cold and detached she is from her daughters, but how inhuman she is, because she's more akin to a ''monster'' than a human in at least one of her daughter's eyes; for all Ashi knows, she was born from a monster instead of a human, and that's probably not far from the truth!
** Hell, the fact that even ''Ashi'', one of her children that she raised from birth and who accepted her lies about Aku and Jack, thinks of her as a monster. ''That's how bad she is.''
* The way that crab creature abducts Ashi, without so much as a gasp. The idea that this creature is smart enough to so easily and silently snatch its prey is kind of creepy. Imagine if Jack's hallucination had decided not to speak up.
** The fact that a ''hallucination'' has to be at the wheel of Jack's senses for Jack to pick up on danger is just as bad, if not worse.
* As Jack is trying to climb his way out of the creature, Ashi [[TakingYouWithMe deliberately kicks out to disrupt his balance and send them plummeting down]]. Needless to say, Jack is not amused and forces her to dangle from her chains beneath him like TheLoad she has chosen to be.
* That... flying fish-like creature. It has six eyes that can cover all its blind spots like [[WesternAnimation/HowToTrainYourDragon the Red Death]], and transparent {{bioluminescen|ce is cool}}t skin that makes its bones see-through. When bathed in light, it looks like an even more ghoulish version of [[Videogame/SuperMarioGalaxy Kingfin]] is chasing after Jack and Ashi.
* Even after all they've been through, Ashi picks up what's left of her broken sickle, and tries to kill Jack while he's sitting in meditation. Jack has a resigned look on his face, like he's well aware of what she's doing, even though she's trying to sneak up on him, and like he's finally decided to just let Ashi have it her way. Fortunately, a passing ladybug causes Ashi to have a change of heart when she sees Jack is a FriendToAllLivingThings -- while remembering her mother was a bloodthirsty tyrant.

[[AC:XCVI]]
* The episode begins with a [[RedshirtArmy human army]] launching an attack on Aku's lair. Unfortunately for them, they couldn't have chosen a worse time, as Aku decides the best way to break himself out of his funk... ''is to annihilate them all''. Making matters worse, [[spoiler:the leader of the army is ''the Scotsman''. He's become very elderly and is now stuck in a wheelchair, making his chances of survival look very bleak.]]
** This also makes one wonder just how desperate (or [[TooDumbToLive foolish]]) anyone would have to be to attack a mighty demon who's well known for being {{nigh invulnerable}}, without even trying to use [[AchillesHeel Jack's holy sword]] on him.
** We've seen Aku take on the forms of everything from an army to a mass of darkness. Here, Aku merely shapeshifts into a giant ball and ''steamrolls'' over all the attacking tanks. After all this time, this is probably the simplest form he's ever assumed (possibly out of sheer laziness or lack of imagination), but never has something so simple worked so effectively, and it shows how little effort he has to put into killing enemies.
*** The resulting "[[CurbStompBattle battle]]" (or more accurately, near-total ''massacre'' of almost all the troops) is so bleak and purely one-sided that [[spoiler:the Scotsman, everybody's favorite badass, ''immediately'' turns tail because [[AdultFear he wants to save his brood of many daughters from getting killed]]. Aku watches them fleeing and has ''this'' to say:]]
--->[[spoiler:'''Aku:''' "Oh? Better make it a '''''[[KillEmAll complete]]'' [[LeaveNoSurvivors annihilation]]'''!"]]
** [[spoiler:'''The Scotsman's death'''. In order to buy his daughters enough time to escape, the Scotsman fearlessly puts himself and [[DoNotTauntCthulhu a few hard-hitting insults]] between Aku and their retreat, which ends with the Scotsman getting incinerated by Aku's [[EyeBeams heat vision]], leaving behind a skeleton that crumbles into black ashes. Though the horror is lessened somewhat when the Scotsman immediately [[OurGhostsAreDifferent returns as a jovial spirit]].]]
*** [[spoiler:Perhaps the worst of it all is that in the Scotsman's last stand, the ultimate warrior of the future who was effectively Jack's ''one equal in all the world'', accomplished ''nothing''. Aku wasn't even ''vaguely entertained''. He just slipped back to his depressed boredom and buggered off to his tower. The Scotsman's passing wasn't even given the slightest fanfare, and again, ''this'' was the definitive, most powerful individual opposing Aku after Jack himself. Granted, he was an old, wheelchair-bound man and nowhere near his prime from 50 years ago, but how quickly it happened is rather chilling.]]
* Jack shows Ashi the destruction and devastation that Aku's forces cause on a daily basis, even without his direct involvement.
** Perhaps the most chilling example is when they sneak into the [[{{Egopolis}} City of Aku]] and witness a ship carrying exiled alien criminals who were banished from their homeworlds arriving. They are subsequently welcomed and referred to move into peaceful towns, with a video screen placing emphasis on two {{children| are innocent}}; and when a confused criminal points out that the area is already occupied, the disbelieving clerk scoffs and asks him if that's an issue. Cue the [[SlasherSmile penny dropping]] as the criminal [[RapePillageAndBurn realizes what they're getting at]]. As noted by Jack, this sort of thing happens on a ''routine basis'' under Aku's rule.
* The entire climax when Jack and Ashi go off to rescue the kidnapped alien children from the [[TortureTechnician Dominator]], a [[{{sadist}} sadistic]] PsychoForHire who [[ForTheEvulz gets his kicks from]] [[WouldHurtAChild torturing and manipulating children]].
** He activates [[BrainwashedAndCrazy mind-control chips that turn the kids into crazy berserkers]]. They now look like savage monsters with {{red eyes| take warning}} who swarm Jack, biting and clawing at him. The Dominator did this to exploit Jack's [[NeverHurtAnInnocent reluctance to attack innocent children]].
*** At one point, Jack manages to break free and duck into one of the abandoned buildings in the factory, getting a chance to catch his breath... except the door on the other side opens, and we're treated to [[http://imgur.com/a/FIe5N this lovely image]].
*** The Dominator later captures Ashi and traps in her in a torture machine. He [[IHaveYouNowMyPretty creepily compliments her pretty face]], before [[ColdBloodedTorture repeatedly zapping her with]] [[ShockAndAwe several thousand volts of electricity]].
** [[spoiler:After Ashi breaks the mind control, the kids get electrified and incapacitated, [[DisneyDeath which made it seem like they died]]. Jack [[DespairEventHorizon believes that he's failed to save the day again and]] ''[[HeroicBSOD finally snaps]]'', so he decides to willingly follow the Omen (the ominous spirit that's been haunting him) to an unknown place.]]
*** [[spoiler:Unlike all those other times when the Omen has appeared, this time he '''[[SuddenlyVoiced speaks]]'''. And the one thing he says? "[[WhamLine It is time.]]" Almost like he was simply ''waiting'' for Jack to just give up his journey...]]
*** [[spoiler:In addition to this, remember the previous circumstances where the Omen appeared; Jack was either feeling immense guilt, was contemplating suicide, or on the verge of dying. The implication here is that Jack [[DeathSeeker now wants the Grim Reaper itself to take him away to his final fate]].]]
*** [[spoiler:AdultFear kicks in when you realize [[WomanChild Ashi]] has suddenly been abandoned by [[ParentalSubstitute the only person who's ever been like a father to her]] in the middle of godforsaken nowhere, and she starts calling out for him in desperation, much like a lost child crying out for a parent who willingly ran out on them.]]

[[AC:XCVII]]
* It turns out that Scaramouche's head is still alive, and he is trying to [[spoiler:contact Aku to tell him that Jack has lost his sword. While the whole subplot is mostly PlayedForLaughs due to his {{ineffect|ual sympathetic villain}}iveness (due to him being [[LosingYourHead reduced to only his head]]), it's only a matter of time before he succeeds in informing Aku. Better hope Jack can find his sword in time...]]
** [[spoiler:[[NightmareRetardant No need to worry now]], seeing as Jack [[HesBack later gets his sword back]] in the next episode. Scaramouche and Aku are in for a rude surprise... yet Scaramouche telling Aku that bit of news is still not something to be taken lightly, because even with Jack's sword back in his hand, he was still in for a much bigger nightmare...]]
* The reveal that Ashi, along with her sisters, were only children when [[spoiler:[[TrainingFromHell they were stripped naked and forcibly dropped into a symbiotic-type substance covering their nude bodies]]. Topped off with the image of [[https://68.media.tumblr.com/e55a809e10fa4177f7e95793e28ebc7e/tumblr_oouhnkkOXR1tykwh1o1_1280.png a young Ashi screaming]].]]
** To further expand on this, when Ashi finally decides to [[spoiler:remove the old burnt skin and soot, she had to use ''rocks'' to scrub it off, and it still took her an entire night. ''It was that heavily bonded to her skin''.]]
** Mildly (''very'' mildly) mitigated, if one considers that [[spoiler:since Ashi had perfectly-healthy skin beneath the black layer, it might not have been a layer of charred skin, so much as soot and ash that had bonded with her skin. But ''none'' of that changes how agonizing the whole process was for Ashi, and how horrific her childhood was.]]
* When Ashi visits Da Samurai's pub, she encounters many old villains that have faced Jack in the past. One of them is a robot who wears tin armor because [[spoiler:his body was reduced to [[BodyHorror a bundle of wires (which look a lot like nerves and blood vessels)]], and the armor is the only thing holding him together. [[http://static.tvtropes.org/pmwiki/pub/images/tin_man.JPG Behold and sweet dreams]].]] It's a very minor example compared to the other events in the episode, but still a testament on [[GoodIsNotSoft how brutal Jack can be against evildoers]].
** While it's played for a quick gag, consider that [[spoiler:''[[TheCollector Demongo]]'' has [[UnexplainedRecovery somehow returned]], and he is still searching for warriors to [[YourSoulIsMine steal their souls]]. The only thing that saves the bar patrons (and potentially [[BadassNormal Ashi, who would've been worthy of capture]]) from being enslaved by him, is because he thinks all of them are pathetic losers, so he decides to go look elsewhere.]]
* [[spoiler:The dark specter that is [[TheGrimReaper The]] [[{{Shinigami}} Omen]] is real. And he will ''kill'' anyone that tries to interrupt Jack's [[DrivenToSuicide suicide attempt]]. When Ashi tries to interfere, he comes after her with a drawn sword, throwing her through tombstones, and growing increasingly vicious as Ashi gets closer and closer to breaking Jack away from his DespairEventHorizon.]]
** Speaking of which, [[spoiler:Jack doesn't even look up when Ashi's trying to get through to him. He just holds the short sword that the Omen gave him, holding it above his abdomen for the killing blow. ''That's'' how close he was to giving up completely.]]
*** For that matter, the ''mere fact'' that [[spoiler:Jack, our beloved childhood hero, the ultimate LawfulGood paragon, the best FriendToAllLivingThings, the greatest NiceGuy to have ever lived, was on the verge of committing '''''{{seppuku}}'''''. Not just any kind of suicide, it's ''seppuku'' (or ''hara-kiri''): a ritual suicide that would have him '''[[GuttedLikeAFish disembowel his own stomach]]''' before getting '''[[OffWithHisHead beheaded by the Omen himself]]''', while ''Ashi is forced to watch''. The sheer horror of such a scene makes the whole fight between Ashi and the Omen that much more intense given what is at stake.]]

[[AC:XCVIII]]
* The flashback to circa 50 years ago. After Aku destroyed the last time portal in front of poor Jack, Aku [[spoiler:{{transform|ation horror}}ed three [[RidiculouslyCuteCritter cute little goats]] that tried to help Jack [[BrainwashedAndCrazy into vicious giant monsters]], and tricked Jack ([[UnstoppableRage who was blinded by his intense rage]]) into killing them all. What makes it even more distressing is that Jack had ''[[AccidentalMurder killed innocent life]]'' after losing control. It's no wonder that after finding their remains in the present day, Jack is still haunted by his deeds.]]
* [[OneWomanArmy Ashi]] absolutely ''[[CurbStompBattle demolishes]]'' an entire army of [[{{Mooks}} orc]] [[CannonFodder mercenaries]] who were going after Jack. And despite how over-the-top the whole scene is, [[MookHorrorShow the violence is still very graphic instead of cartoony]]; for instance, she spears several soldiers and some through the head. She also causes several of them to [[ImpaledWithExtremePrejudice fall onto their own spears]], and mangles one guy's arm so badly ''it splinters apart near the elbow with a gush of blood''. By the end of it all, she's ''drenched in blood'' and standing among a field of broken bodies, some impaled with their own blades, some even dismembered, and those who aren't yet dead are otherwise lying and dying in complete agony. It just goes to show that despite [[HeelFaceTurn joining the side of good]], [[GoodIsNotSoft she's still very deadly and ferocious]].
* [[spoiler:During her fight with Ashi, the High Priestess [[NearVillainVictory comes dangerously close to killing Jack]] several times while the latter is meditating and thus completely defenseless. To say nothing of the fact that [[OffingTheOffspring she is fully willing to kill her only remaining family member to do so]].]]
** [[spoiler:Never mind the fact that the High Priestess is far from the ZeroEffortBoss that one might reasonably have expected her to be; from the moment she sheds her cloak, and is revealed to be wearing the same black ash coating on her skin like her daughters had, it's obvious that she's more than capable of killing Ashi and Jack, even ''without'' her bow or sacrificial dagger.]]
** [[spoiler:Ashi's ability to throw an arrow barehanded is so potent that ''she doesn't need a bow to launch it hard enough to maim someone''. Her mother gets [[ImpaledWithExtremePrejudice impaled through the waist]] and [[DisneyVillainDeath falls down the mountain]].]]
* Jack's inner-self [[spoiler:(AKA [[EnemyWithin Mad Jack]])]] freaking out during his metaphysical journey to regain the sword, and he starts actively fighting with his host. Worse, in his previous appearances, he was blue; this time, he's ''red''. Each time he reappears, [[TookALevelInJerkass he gets even meaner and scarier]].
** Inner Jack, ''period''. [[spoiler:As Jack begins to come to terms with the fact that his own rage and frustration were what caused him to lose his sword in the first place, Mad Jack (being the manifestation of these dark emotions) becomes increasingly unhinged, his appearance turning absolutely ''[[NightmareFace monstrous]]''. To say nothing of [[FamousLastWords what he says when Jack purges him from his mind]]:]]
--->[[spoiler:'''Mad Jack:''' "''YOU NEED ME!!!''"]]

[[AC:XCIX]]
* When Jack and Ashi are visiting a BazaarOfTheBizarre, Jack eats a weird and [[{{Squick}} still-living]] [[AlienLunch worm creature]] which he thinks tastes delicious... but then his face suddenly turns into a ''colorful fish''. It creeps out Ashi so much she decides not to eat it. Even though the effect is temporary and PlayedForLaughs, it's still a little bit freaky.
* While inside an animal-driven transport, Jack and Ashi are surrounded by a large group of green tiger men. As the tension builds up, it doesn't take long before Jack realizes they're yet another gang of {{bounty hunter}}s, as they assemble with shirts that spell out "DIE SAMURAI JACK".
* [[StarfishAlien Lazarus-92]], [[TheWormThatWalks an alien monster composed of many carnivorous leech-like critters]] that pursues Jack and Ashi for most of the episode. No matter how many of the leeches they cut down, [[ImplacableMan they never stop coming back]].
** The crashed prison spaceship containing Lazarus-92 is empty of all life except for the creature, but the presence of other cells (and scratches on the walls marking the passage of time) indicates that there were other prisoners. Did the inmates escape, or were killed by the initial crash-landing, or did Lazarus [[EatenAlive devour them all]] (along with all the guards and crew members)? [[FridgeHorror Exactly how everyone else died]] [[NothingIsScarier is up to your imagination]].
** The Lazarus leeches can bite and infect their victims with a deadly green poison. Ashi gets bitten in the leg, and it's clear she's in intense pain. Jack has to ''suck and spit out'' the venom to save her leg, and that was only from one worm.
** In the climax, Lazarus comes very close to killing the heroes when they both get covered head-to-toe with the worms, attempting to eat them alive. They're only saved when Jack finally manages to activate the weapon he found to kill Lazarus, which [[ShockAndAwe electrifies]] every single worm to death, while also shocking Jack and Ashi as they scream out in agony.

[[AC:C]]
* Jack wanders off and discovers that [[spoiler:long ago, Aku probably ''[[KilledOffScreen murdered the Guardian]]'' and destroyed the time portal that he was guarding. All that's left is a ruined obelisk and [[CoolShades a pair of broken red shades]], [[NeverFoundTheBody but no corpse can be seen]]. '''[[NothingIsScarier What the heck happened??]]''']]
** As shown way back in [[spoiler:his own episode, the Guardian was so tough and badass that ''[[NighInvulnerable missiles can't even scratch him]]'', and he was able to ''[[CurbStompBattle easily defeat]] [[OneManArmy Samurai Jack]]''. Unfortunately, the Guardian seemed to [[DeathByIrony have ironically fallen victim to]] [[TheWorfEffect a one-sided fight himself]]. [[FridgeHorror Whatever Aku did to the Guardian]] ([[EyeBeams such as]] [[DisintegratorRay the obvious]]), it could not have been pretty.]]
* The way that Aku suddenly appears. A HeartwarmingMoment between Jack and Ashi is interrupted when we hear [[SayMyName Aku bellowing Jack's name]]. They turn around and '''''[[OffscreenTeleportation he's just there right next to them]]''''', and we're treated to [[https://68.media.tumblr.com/2770b911f4b0fc7f6c1d82127dfd6392/tumblr_opye08wEbO1tgxaweo1_1280.png a chilling image of his massive silhouette staring down at them]].
* [[spoiler:Scaramouche's second death is as brutal as it is [[BlackComedy hilarious]]. Aku angrily shoots a [[EyeBeams laser beam]] and [[YourHeadAsplode blows up his head]], to punish Scaramouche for (unwittingly) misinforming him about Jack's sword. If Scaramouche was human, it would be a [[BloodyHorror lot]] [[BloodyHilarious worse]].]]
* TheReveal that [[spoiler:the Daughters of Aku are ''[[NotHyperbole literally]]'' '''[[TheAntichrist Aku's daughters]]'''.]]
** [[spoiler:Aku smells his own scent on Ashi, and soon realizes that ''she is merely a piece of himself''. He explains that a long time ago, he visited the Cult of Aku's temple and dispensed a cup full of ''his own bodily fluids''; which the High Priestess then drank down, making her pregnant with [[HalfHumanHybrid seven hybrid offspring]]. The origins of Ashi and her sisters sounds a hell of a lot like a [[CosmicHorrorStory Lovecraftian]] [[Literature/TheShadowOverInnsmouth horror story]].]]
** [[spoiler:The moment Jack tries to strike down Aku after this revelation, Aku just... ''stands there'', with the absolute most contented smile on his face. Then, as listed below, Ashi moves to intercept Jack, not even being aware of it until it's happened. As she stammers out that she didn't do this, Aku's uncharacteristic response tells the whole story: '''"Yes, you did."''' Note the tone here. [[OOCIsSeriousBusiness There's none of Aku's usual ham whatsoever, only a chillingly calm, straightforward statement]]. That isn't a "proud papa" smile, that's ''satisfaction''. In that instant, Aku ''knew'' he had finally won.]]
*** [[spoiler:Exploiting his newfound "fatherhood", Aku decides to [[PeoplePuppets take control of Ashi]], [[{{Sadist}} gleefully]] forcing her to fight Jack against her own will. He then [[TransformationHorror forcefully and painfully turns Ashi into]] [[SuperpoweredEvilSide a twisted demonic version of herself]]; the new Ashi looks like a [[HumanoidAbomination tall and slender black figure]] with no facial features, except for [[GlowingEyesOfDoom glowing white eyes]] with [[UnusualEyebrows flaming red eyebrows]]. Who then begins bending around with an inhuman range of limberness and gains a black sword lit ablaze with Aku's fire and starts rapidly punching her sword into the metal of a junked robot like a needle of a sewing machine in an attempt to slay Jack, then causes a massive explosion just by ''flexing''.]]
*** [[spoiler:[[AndIMustScream Ashi is fully conscious of her actions]], even after her transformation into a HumanoidAbomination. If that wasn't enough, Jack accidentally cuts her demonized body, which burns like Aku's would. It causes some of the darkness covering her to recede for a brief moment, and she ''[[MercyKill begs for Jack to kill her]]''.]]
*** [[spoiler:But finding himself unwilling to kill another brainwashed innocent, and someone he deeply loves no less, Jack just [[DespairEventHorizon gives up all hope again]], ''[[KneelBeforeZod personally surrenders before Aku]]'', and '''allows his sword to be taken away'''. Obviously, Aku can't use the sword on Jack, but he can still deprive him of it. In the end, '''''[[TheBadGuyWins Aku has won]]''''', Ashi is under his thrall as his newest and most powerful minion, and Jack is left at their mercy for whatever fate Aku has planned for him. To say that this is Jack's DarkestHour before the final episode would be a massive understatement.]]
** [[spoiler:Aku managing to take away Ashi's physical control and bend it to evil and only allowing forces of evil to freely manipulate weapons is exactly the kind of thing in his standard repertoire of villainy. He took control away from the man who became the Rock Monster by imprisoning him, he got a banshee to control Jack's sword, Scaramouche could control a sword through magical scatting, he let the Dominator implant chips into alien children to force them to do evil, and so on.]]
** [[spoiler:There's the horrific implication that if Jack had spared Ashi's siblings, he would have had to face '''all seven''' Daughters of Aku in demonic form.]]
* [[spoiler:Just let it sink in. After dozens of episodes of trying, [[TheBadGuyWins Aku finally got that sword and defeated Jack; Aku, the embodiment of evil, had his one good day and basically won]]. [[DownerEnding Rendering Jack's fifty-year-long struggle meaningless]].]]

[[AC:CI]]
* Aku's gleeful ranting as [[DoNotAdjustYourSet he boasts to the world]] that he has captured Jack. Yet another reminder that this silly jokester is still a monstrous dictator.
--> '''Aku''': To all those who dare oppose me, YOUR HERO IS DEAD! ''YOUR HOPE IS DEAD!'' '''I AM THE ONE TRUE MASTER!''' Let this be a lesson to all! TIME TO DIE, SAMURAI JACK!
** Not only that, but he uses the intro from the past four seasons as a prelude. That means the intro we used to hear was a propaganda piece by Aku all along. And just to twist the knife deeper, he tacks "{{NOT}}!" onto the end of the intro.
* Aku planning to have Ashi, who is suffering from AndIMustScream under his control, kill Jack, the man she loves, while the whole world watches.
** Heck, when Ashi is about to kill Jack is perhaps the most tense and distressing scene '''of the entire series''', because we are about to witness the murder of our beloved hero while Aku shows pure excitement and joy in his face... [[spoiler:[[BigDamnHeroes until the awesome rescue!]]]]
* The way that Ashi assails Jack when he tries to recover his sword; she begins swiping at him with deformed arms like a distorted mantis before scuttling towards him like a blade-legged spider. She also causes another fiery explosion just by flexing again. It's even worse knowing that there's a young girl trapped somewhere in that black mass, being forced to contort herself in ways her body was never meant to bend...
* Aku corrupting several of Jack's old allies just by touching them. And how Aku goes about corrupting them:
-->'''Aku:''' Pathetic fools! You are all insignificant insects compared to might of ''Aku!'' ''(raises his hand)'' And insects get... ''(slams his hand down on a group of archers mounted on Woolies)'' '''''SQUASHED...!''''' And... ''(lifts his hand up to reveal all of the beings he crushed have been turned into miniature versions of himself wielding pitchforks)'' '''EXTERMINATED!!'''
* Aku's reaction after [[spoiler:Ashi invokes EleventhHourSuperpower to help Jack finally return to the past]] is rather chilling, [[KarmicDeath even if he deserves it]]:
-->'''Aku:''' [[OhCrap ... Oh, no...]]
* [[spoiler:Ashi fading away, leaving only her bridal gown, because Aku's demise means he never gave the High Priestess the essence she used to make her]].
** [[spoiler:There's a ''mountain'' of FridgeHorror attached to this: Jack going back to the past to defeat Aku essentially meant he ''erased'' the entire future that existed because of Aku. But if he and Ashi had refrained from going back to the past, chances are all the people in that future would have remained extant, though at the cost of going back to those he cared for in the past and losing them. And Jack had to sacrifice one or the other. Pick one for the greater good of those to follow by taking Aku out in the past, or just take him out in the future and rebuild from there as [[TheAgeless an immortal]] whose offspring with Ashi would end up being the '''Gran'''daughters of Aku who [[HistoryRepeats could possibly carry on the bloodline of his essence]]? One hell of a SadisticChoice if there ever was one.]]
** [[spoiler:Ashi lives on only in Jack's memory which is ''exactly what he feared might happen''.]]
[[/folder]]
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