History NightmareSequence / WesternAnimation

* The opening scene of the ''[[WesternAnimation/AdventuresOfTheGalaxyRangers Adventures Of The Galaxy Rangers]]'' episode "Psychocrypt". Made worse when you realize that it ''isn't'' a nightmare, but a form of MindRape the Queen is using on Zachary ''and'' his wife...
** There was also one of these in "Scarecrow." Niko has a nasty nightmare after the Scarecrow attacks her. She dreams of waking up in her own grave, and the Scarecrow jumping in to strangle her with his bare hands.
* In the ''WesternAnimation/AlvinAndTheChipmunks'' episode "No Chipmunk is an Island", Alvin, Simon, and Theodore move into separate bedrooms after a fight, only to have nightmares about what would happen if they were left unchecked by each other's presence:
** Alvin dreams of living in a ridiculously opulent house with an enormous artificial wave pool. However, it uses so much electricity that a torch-and-pitchfork mob, led by Dave, Simon, and Theodore, chops a tree down onto his power lines, causing the wave pool to malfunction and send him spiralling down a whirlpool.
** Simon dreams of being a multi-Nobel Prize-winning scientist and inventor who is assisted in his discoveries by robotic versions of Alvin and Theodore. However, [[TurnedAgainstTheirMasters they quickly break their programming]] and destroy Simon's experiments, then pursue him around his lab before throwing him into a glass tube that shrinks him to a height of six inches.
** Theodore dreams of life in an idyllic country cottage, where he is free to cook elaborate recipes with enormous portions. However, he eats so much that he and his teddy bear inflate like balloons and float away, attracting unwelcome attention from the US Air Force.

** In "Germophobia", Buster has a dream where germs are visible and doing an EvilLaugh.
** In "Sick as a Dog", Arthur has a nightmare about bad things happening to his dog Pal at the vet.
** In "Arthur's Lost Library Book", Arthur has a truly terrifying nightmare about being haunted by ghosts, captured by the [[ExtendableArms literal]] long arm of the law, and punished in a barbaric manner for losing a library book (by having the library books he checks out chained to a ''crank'' the librarian operates). It's so scary Arthur even lets out ''all'' of his usual {{Stock Scream}}s, including of course his CatapultNightmare wake-up.
** In "D.W.'s Furry Freakout", D.W. has a nightmare where a giant cat is attacking Elwood City.
** In "Francine Redecorates", Francine has a nightmare where she is attacked in her room by an [[BatOutofHell enormous, menacing bat sporting a Translyvanian accent.]] The most spine-chilling part is that it shifts to Francine's point of view before the bat dives at her with bared teeth, making it look like the bat is directly attacking the viewer, and it gets [[TheFourthWallWillNotProtectYou dangerously close to the proverbial camera just seconds before the nightmare ends.]]
** In "Binky Goes Nuts", Binky has a nightmare where Mrs. [=MacGrady=] doesn't let him eat anything and makes him sit next to some sloppy kids with bizarre allergies.
** In "D.W.'s Time Trouble", D.W. has a nightmare where she goes back in time and makes it so that she is the oldest. It starts off good, but turns into a nightmare when Arthur starts acting like a BrattyHalfPint and D.W. gets lost.
** "Arthur's Underwear" focuses on Arthur being afraid due to his {{Not Wearing Pants Dream}}s.

** Comes with a severe case of MoodWhiplash in the episode "Nightmares and Daydreams". Aang is nervous about the invasion of the Fire Nation, and is having nightmares. The first two are funny, with Aang about to face a giant Fire Lord but missing his pants and forgetting to study for a math test. The third however, is an insane and freakish affair that looks like it came straight out of ''Film/TheRing'' ([[DefangedHorrors sorta]]). It features Toph missing her eyes, Sokka, Katara, and Aang being engulfed in mud, fire, and ice while a giant fire takes the shape of Ozai with an evil laugh and attacks Aang, Momo eerily putting his finger to his mouth, and finally Aang suddenly in a field, watching as it is symbolically destroyed by Sozin's Comet. You can understand why he decides to stop sleeping. And then he starts having hallucinations of [[MoodWhiplash Momo and Appa arguing and getting into an epic sword fight]].
** Also, in Season 1 Aang had several nightmares about the day he ran away and was frozen in the iceberg. The last one we see starts off fine, with Aang flying with Appa while his friends ride on his glider and a giant Momo. Then he sees the storm, and when he warns his friends he notices that they are not there. Then Monk Gyatso shows up and asks him why he ran away before disintegrating.
** At one point, Aang also dreams of losing control of the Avatar State, and is outside his body while it was killing people.
** And Zuko's dream in "The Earth King", where he's being crowned Fire Lord with [[GoodAngelBadAngel dragons representing Azula and Iroh]] at his side when the audience turns to dust, and we then see Zuko's mother sinking into the ground, while the Azula dragon tells him to "go to sleep, ''just like mother''". This scene was originally supposed to show her being ''eaten'' by the Azula dragon, but they decided that was going too far. He then wakes up and walks around before noticing that he's bald with airbender tattoos, and then wakes up for real.
* ''WesternAnimation/BatmanTheAnimatedSeries'': Both parts of the "Two-Face" episode have one. The first opens with Harvey Dent trying and failing to escape from "Big Bad Harv" persona, foreshadowing his eventual fall. The second features Bruce suffering from a nightmare early on of his guilt for failing to keep Harvey from becoming Two-Face.

** In "Friends with Burger-Fits", Bob is worried that his burgers have contributed to Teddy's high cholesterol, and has a nightmare where disembodied hands sprout from his body, pull out Teddy's still-beating heart, and cram it with hamburgers until it swells grotesquely and threatens to explode.
** In "The Millie-churian Candidate", Louise has a nightmare about her StalkerWithoutACrush Millie winning the class election, and using her power to force Louise to be her best friend, going so far as to have the marching band make an anthem to their "friendship" and get the Home Ec club to sew their clothing together.
** In "The Grand Mama-Pest Hotel", Linda has a nightmare about growing apart from Tina that ends with Tina running away and Linda getting trapped in a giant scrapbook.
** In "PTA It Ain't So", Linda discovers that Joanne, the PTA president, has been StealingFromTheTill, but is pressured into keeping quiet about it. Linda eventually has a nightmare where Joanne tries to get her to sign a contract in blood, then pulls off her face to reveal a BigRedDevil, then pulls off ''that'' face to reveal Linda's own head as Joanne lets out an EvilLaugh and the two are surrounded by flames.
** In "Pig Trouble in Little Tina", Tina has a series of nightmares about being tormented by the ghost of a fetal pig she had to dissect in science class.
* In the ''WesternAnimation/{{Catscratch}}'' episode "Evil", Waffle wakes up to find out his fur is falling out- Mr. Blik tells him that it's because he's cursed and evil. Waffle actually believes it. he has two nightmares in one he turns into a lizard-like beast and then some bug monster- then he eats Gordon and Human Kimberly, in another one he zaps Hovis the butler with a beam from his eyes and laughs manically. He is heard doing Evil Laughter in his sleep but then he covers up his mouth.
* WesternAnimation/ClassicDisneyShorts:

** WesternAnimation/TheMadDoctor: Mickey attempts to rescue Pluto from a very insane and sadistic Mad Doctor/Scientist who tortures the pup with a glee, having to face a lot of horrors that the doctor/scientist's lair provided, and waking up only after almost being cut in two while being StrappedToAnOperatingTable.
* The WesternAnimation/ColorClassics short "Play Safe! Play Safe!" has the scariest trains ever.

** In the episode "Monster", Daria and her friend, Jane, make a documentary for class about Daria's sister Quinn. Daria dreams that she has become her fashion-obsessed sister. In the nightmare, Daria has the body and voice of Quinn and her own head, while Jane has the bodies and voices of Quinn's equally vacuous friends and her own head.
** In "Through the Lens, Darkly", Daria believes herself to be vain for getting contacts and so has a nightmare where she goes through a Hall of Mirrors and her body gets distorted by the mirrors.
* An episode of ''WesternAnimation/{{Doug}}'' had Doug suffering from reoccurring nightmares when he couldn't bring himself to see TheReveal of [[MonsterDelay the monster's true form]] in the horror movie ''The Abnormal''. He is finally cured when he is dragged to the films final showing by his dog Porkchop, who holds his eyes open so he can see that the monster's costume is depressingly lame (one can even see the zipper up the back). It also turns out his friends were too afraid to see the monster, and Roger denies it.
* ''WesternAnimation/DuckTales1987'': It happens to Scrooge twice, at the beginning of "Earthquack" and the beginning of "The Unbreakable Bin." Both dreams involve Scrooge in his money bin, being attacked by the Beagle Boys.
* In the ''WesternAnimation/DuckTales2017'' episode, "The Other Bin of Scrooge [=McDuck=]", Lena has one of these due to a magical dream catcher. It includes [[spoiler: Magica regaining her physical form, Webby calling Lena out, Magica turning Webby into a doll, which proceeds to give Lena a ''brutal'' BreakingSpeech.]] The dream ends after [[spoiler: Lena ''disintegrates'' Doll!Webby by accident.]]
* The ''WesternAnimation/EdEddNEddy'' episode "Rock A Bye Ed" is centered around Ed having a nightmare about Jonny 2x4 being his mother who immediately sides with Sarah over a disagreement over her brother's paddleball. Things turn surreal as the nightmare escalates to Johnny punishing Ed by dropping into a shark-Kanker hybrid tank after a KangarooCourt. By the time the plot kicks into motion, Ed can't even ''look'' at Jonny without suffering trauma. [[spoiler:Then, in a twist, the whole episode turns out to be a nightmare ''Jonny'' was having!]]

** In the episode "A Head in the Polls", Bender has a nightmare where he sees [[FauxHorrific a two in the middle of some binary]].
** One episode focuses on Leela having [[AdventuresInComaland comatose dreams]] after being stung by a space bee, some of them fall into nightmare territory (being accused of killing Fry, etc).
* ''WesternAnimation/{{Gargoyles}}'': The episode "Future Tense" is essentially an extended Nightmare Sequence, wherein Goliath returns to Manhattan to find that four decades have passed since he left. In that time, Xanatos appears to have taken over the city, Hudson has died, Broadway was blinded (and is killed during a heated battle), and Lexington has crossed the MoralEventHorizon and turned against his clan. [[spoiler:Luckily, it was all just a dream engineered by Puck to convince Goliath to hand him the Phoenix Gate.]]
* ''WesternAnimation/HeyArnold'': "Part Time Friends". Arnold and Gerald work together at a flower shop with Gerald being the boss since the owner injured her leg and appointed him as the temporary manager. After Arnold gets into a fight with Gerald and says that he doesn't want to be friends with him, Arnold's Grandpa tells him about a similar incident that happened to him when he was Arnold's age. Arnold then begins to have a dream where he and Gerald are old, still former friends, and can't remember what they were fighting about. [[https://www.youtube.com/watch?v=DRGogGbYaLU The dream takes a turn for the disturbing and into a full nightmare]] when it cuts to ''the old, withered, zombie corpse of Arnold's Grandpa'' where he says "Well, what did I tell ya, Shortman?" while some ominous music plays. He then proceeds to laugh in a ''really, '''creepy''' way'', only for his ''jaw to crack and fall off his skull''. Cue Arnold waking up via CatapultNightmare.

* ''WesternAnimation/{{Jellystone}}'': In "Face of the Town!", the stress of trying to pick someone to be the new face of Jellystone leads to Huckleberry having a bad dream wherein headless versions of Yogi, Jabberjaw, and Peter Potamus attack and [[OffWithHisHead decapitate him]] in a ruined version of town.
-->'''Huck''': Well, that there was a tad bit strange. (''realizes his headless body is lying next to him'') ...Oh, alright, I get the symbolism-slash-metaphor. [[CatapultNightmare AAAAAH!!]]

* ''WesternAnimation/KimPossible'' begins the PostScriptSeason with a reprise of Kim and Ron dancing at the prom in ''[[TheMovie So The Drama]]''... until Kim shrivels up and melts into synthodrone goo. Ron then [[CatapultNightmare wakes up screaming]].
* The ''WesternAnimation/KingOfTheHill'' episode "The Man Who Shot Cane Skretteburg", wherein Hank experiences a disturbing hallucination of himself and his friends being (paintball) gunned down by the episode's antagonists. The sequence plays like a bad acid trip -- [[DerangedAnimation probably a little too effectively.]]
** The episode "Are You There God? It's Me, Margaret Hill" has a scene where Peggy dreams about dooming a convent to Hell for posing as a nun to get a full-time teaching job.
** The episode "Hank's Unmentionable Problem" has one where Peggy dreams that Hank dies of complications relating to his constipation, which ends with Cotton flushing the coffin into the ground. This scares Peggy when she wakes up and finally convinces Hank to see a doctor.

* At the beginning of the ''WesternAnimation/MiraculousLadybug'' episode "Sentibubbler", Marinette has a nightmare that took place at the Césaire residence where she, Alya, her family, and Nino are having a meal. Her nightmare has Alya betraying her to Shadow Moth that got hold of the Miracle Box.

** In "Martha Fails the Course", Martha has a nightmare where she is balancing on a rocky ledge and [[AttackOfTheFiftyFootWhatever giant versions]] of her friends are laughing at her.
** Martha's dream in "Verb Dog: When Action Calls" is only a nightmare at the end: it ends with [[spoiler: herself muzzled, Helen petrified, Ronald about to take over the world, Alice frozen and T.D. tied up.]]
** In "Too Much Martha", Martha has a nightmare where she's literally paper-thin.

** Rainbow Dash's dream that introduces "May The Best Pet Win". [[spoiler:All the cast's pets appear, merge into [[MixAndMatchCritters one creature]], then Opal [[http://images.wikia.com/mlp/images/c/ce/Owlowiscious_Change_9_S02E07.png pops out of the thing's mouth]] like a [[Franchise/{{Alien}} xenomorph's]] tongue.]] Freaky.

** All three of the Cutie Mark Crusaders get nightmare sequences in "[[Recap/MyLittlePonyFriendshipIsMagicS5E4BloomAndGloom Bloom & Gloom]]" - starting with Apple Bloom's [[DreamWithinADream recursive dreams]], and later as Princess Luna shows her Sweetie Belle and Scootaloo's dreams fuelled by their own anxieties.

* ''WesternAnimation/TomAndJerry'': In the short ''WesternAnimation/HeavenlyPuss'', Tom seemingly dies and got rejected from Heavenly Express unless he got Jerry to sign in a certificate of forgiveness, but he got it too late and he's thrown straight to Hell to be tormented by the Devil who disturbingly looked like Spike the Bulldog. It was AllJustADream, but the short is one hell of a NightmareSequence of Tom.
* In ''WesternAnimation/TwiceUponATime'' (which is about a DreamLand), the fool heroes Ralph and Mum are briefly trapped in a ''waking'' nightmare in which they are attacked by sentient office supplies -- making matters worse, the heroes are only inches tall...

** In "Hazelnut's Finest" Pepper Ann finds her uncle's job as a police officer boring after going with him to work for a school project and being disappointed when she sees him only doing small helpful jobs around town instead of going on wild police chases after crooks like on television. Afterward, P.A. asks him why he doesn't look for more exciting police work instead of wasting his time fixing seemingly trivial problems. The next morning, Uncle Jojo seemingly decides to transfer to a more exciting job in Reno on P.A.'s suggestions, and [[DisasterDominoes everything in Hazelnut proceeds to go to Hell without him]]. The small jobs Uncle Jojo did before but now ''didn't'' do [[ForWantOfANail balloon into enormous problems]], causing the town to descend into chaos with everyone in town looting stores and breaking things, before a bunch of natural disasters (an earthquake, a tsunami, and a tornado) simultaneously strike the town with enough force to throw the planet off orbit and send it hurtling toward a black hole. At this point, [[CatapultNightmare Pepper Ann wakes up screaming for her uncle to come back]], and immediately goes to apologize to him for taking his job for granted.

* "Dream Scheme," an episode of ''WesternAnimation/ThePowerpuffGirls'' featured the Sandman as a villain who puts everyone in the entire world to sleep. The girls defeat him in this crazy and disturbing dream sequence...thingy featuring chickens, a praying mantis, and trippy oil projector backgrounds.

** In "Binky Goes Nuts", Binky has a nightmare where Mrs [=MacGrady=] doesn't let him eat anything and makes him sit next to some sloppy kids with bizarre allergies.

* In the ''WesternAnimation/{{Catscratch}}'' episode "Evil", Waffle wakes up to find out his fur is falling out- Mr Blik tells him that it's because he's cursed and evil. Waffle actually believes it. he has two nightmares in one he turns into a lizard-like beast and then some bug monster- then he eats Gordon and Human Kimberly, in another one he zaps Hovis the butler with a beam from his eyes and laughs manically. He is heard doing Evil Laughter in his sleep but then he covers up his mouth.

** In the episode where Bender sells his body, he has a nightmare where he sees a two in the middle of some binary.

** "Arthur's Underwear" focuses on Arthur being afraid due to his {{NotWearingPantsDream}}s.

** "Arthur's Underwear" focuses on Arthur being afraid due to his NotWearingPantsDream's.

** IN "Francine Redecorates" Francine has a nightmare where she is attacked in her room by an [[BatOutofHell enormous, menacing bat sporting a Translyvanian accent.]] The most spine-chilling part is that it shifts to Francine's point of view before the bat dives at her with bared teeth, making it look like the bat is directly attacking the viewer, and it gets [[TheFourthWallWillNotProtectYou dangerously close to the proverbial camera just seconds before the nightmare ends.]]

** There was also one of these in "Scarecrow." Niko has a nasty nightmare after the Scarecrow attacks her. She dreams of waking up in her own grave, and the Scarecrow jumping in to strangle her with his bare hands.

** In "[[Recap/RugratsS2E14TheSantaExperience The Santa Experience]]", one of the show's {{Christmas Episode}}s, Angelica has conned Phil out of his Reptar Doll and Lil out of her coloring book, and as a result, has a nightmare in which Santa found out about her dastardly deed and all her presents are lumps of coal. Cue a BigNo from Angelica as the Dream Santa buries her in piles of it! As a result of that nightmare, Angelica resolves to make amends with the twins before Christmas.

** Tommy gets a minor cut from a thorn bush and has a disturbing dream in which his arm is torn open and stuffing comes out (inspired by a damaged teddy bear that appears in the same episode).
** Undoubtedly the scariest dream sequence in ''Rugrats'' is the dream Angelica has in the episode where she finds out that she might have a baby brother/sister. It begins with Angelica hearing a baby crying and finds her parents fawning over the new baby, saying how "precious" and "adorable" it is while not knowing who Angelica is. After the mom and dad leave, Angelica talks to the baby, and, much in the same matter as Tommy and the gang, Angelica's new baby brother can talk. However, he's more like WesternAnimation/FamilyGuy's [[EnfanteTerrible Stewie]] minus the evil humor and with horrifyingly deep and raspy voice (that is in fact, a dead-on impersonation of Edward G. Robinson), and tells Angelica that this house isn't big enough for the both of them, and says that Angelica (the "old baby") should be gone permanently. Angelica tries to tell her parents about it, but of course don't believer, and then they force her to live in the garage. The baby finds her, and for not following his advice he plans to "teach [her] a lesson". She flees from him, but the baby keeps finding her, and growing every time there's an encounter between them. The dream enters its horrifying climax as Angelica's now Godzilla-sized baby brother catches Angelica in her getaway car, wondering "what a toy car would taste like". It all ends with Angelica screaming, "No! You can't eat me, I'm your sister!" with the baby replying, "WELL NOW YOU'RE NUM-NUMS!"
** A Halloween episode of the later series had Chuckie having a nightmare in which he turns into a Lon Chaney Jr style wolfman.
** Then there's the MonsterClown one that Chuckie had in one episode.
---> "I'm not Tommy!"
** In the same episode, Chaz has a very similar one at the end...
---> "I'm not Stu! HUHAHAHAHAHAHA!"

* ''WesternAnimation/PepperAnn'': In "Reality Bytes", Pepper Ann gets addicted to using the internet and is gradually spending her entire Spring Break surfing the web, putting her, Milo, and Nicky's plans to go hiking that weekend in jeopardy because she cannot unplug herself from the computer. Eventually, Milo and Nicky give up when Pepper Ann jilts them to go into an electronics store and use their computers when they're supposed to be getting supplies for their hiking trip, leading to Pepper Ann wondering if she's doing the right thing. We then segue into her with her friends in nature, Milo and Nicky happy that Pepper Ann has finally joined them. But then a mouse cursor appears and changes a rabbit into an angry pterodon and Milo and Nicky into a monkey and a pig through drop down menus. Then the "computer" starts to delete everything because of a computer virus and freezes Pepper Ann in place to delete her as well as she fruitlessly cries for help. She then wakes up still in the electronics store and it finally dawns on her that she is wasting her entire week. She shuts down the computer, catches up with her friends, and has a great weekend on their hiking trip (though she panics and runs for the hills the moment she sees a rabbit, much to Milo and Nicky's confusion).

* The opening scene of the ''[[WesternAnimation/AdventuresOfTheGalaxyRangers Galaxy Rangers]]'' episode "Psychocrypt". Made worse when you realize that it ''isn't'' a nightmare, but a form of MindRape the Queen is using on Zachary ''and'' his wife...

* The ''WesternAnimation/EdEddNEddy'' episode "Rock A Bye Ed" is centered around this trope.

* The ''WesternAnimation/KingOfTheHill'' episode "The Man Who Shot Cane Skretteburg", wherein Hank experiences a disturbing hallucination of himself and his friends being (paintball) gunned down by the episode's antagonists. The sequence plays like a bad acid trip -- probably a little too effectively. (DerangedAnimation runs rampant.)
** The episode "Are You There God? It's Me, Margaret Hill" has a scene where Peggy dreams about dooming a convent to Hell for posing as a nun to get a full-time teaching job.
** The episode "Hank's Unmentionable Problem" has one where Peggy dreams that Hank dies of complications relating to his constipation, which ends with Cotton flushing the coffin into the ground. This scares Peggy when she wakes up and finally convinces Hank to see a doctor.

* In ''WesternAnimation/TwiceUponATime'' (which is about a DreamLand), the fool heroes Ralph and Mum are briefly trapped in a ''waking'' nightmare in which they are attacked by sentient office supplies -- making matters worse, the heroes are only inches tall...
* In the ''WesternAnimation/DuckTales2017'' episode, "The Other Bin of Scrooge [=McDuck=]", Lena has one of these due to a magical dream catcher. It includes [[spoiler: Magica regaining her physical form, Webby calling Lena out, Magica turning Webby into a doll, which proceeds to give Lena a ''brutal'' BreakingSpeech.]] The dream ends after [[spoiler: Lena ''disintegrates'' Doll!Webby by accident.]]
* ''WesternAnimation/HeyArnold'': "Part Time Friends". Arnold and Gerald work together at a flower shop with Gerald being the boss since the owner injured her leg and appointed him as the temporary manager. After Arnold gets into a fight with Gerald and says that he doesn't want to be friends with him, Arnold's Grandpa tells him about a similar incident that happened to him when he was Arnold's age. Arnold then begins to have a dream where he and Gerald are old, still former friends, and can't remember what they were fighting about. [[https://www.youtube.com/watch?v=DRGogGbYaLU The dream takes a turn for the disturbing and into a full nightmare]] when it cuts to ''the old, withered, zombie corpse of Arnold's Grandpa'' where he says "Well, what did I tell ya, Shortman?" while some ominous music plays. He then proceeds to laugh in a ''really, '''creepy''' way'', only for his ''jaw to crack and fall off his skull''. Cue Arnold waking up via CatapultNightmare.

* ''WesternAnimation/{{Jellystone}}'': In "Face of the Town!", the stress of trying to pick someone to be the new face of Jellystone leads to Huckleberry having a bad dream wherein headless versions of Yogi, Jabberjaw, and Peter Potamus attack and [[OffWithHisHead decapitate him]] in a ruined version of town.
-->'''Huck''': Well, that there was a tad bit strange. (''realizes his headless body is lying next to him'') ...Oh, alright, I get the symbolism-slash-metaphor. [[CatapultNightmare AAAAAH!!]]