History TrailersAlwaysSpoil / WesternAnimation

* When ''WesternAnimation/TheTransformers'' episode "[[Recap/TransformersG1DarkAwakening Dark Awakening]]" was rerun prior to the third season finale, Rodimus Prime's final line, "So long, Prime," was replaced with an announcer declaring, "But is this really the end of Optimus Prime? Tune in for tomorrow's exciting episode: '[[Recap/TransformersG1TheReturnOfOptimusPrime The Return of Optimus Prime]]'!" Thankfully, newer DVD releases go with the original ending (though of course the DVD's episode list does let you know that an episode called "The Return of Optimus Prime" is coming up.)

* From an episode preview on ''WesternAnimation/TheTransformers'', "But is this really the end of Optimus Prime? Tune in for tomorrow's exciting episode: "The Return of Optimus Prime".
** However, the ''first'' time that aired, it didn't have the narration. Thankfully, newer DVD releases go without it (though of course the DVD's episode list does let you know that an episode called "The Return of Optimus Prime" is coming up.)
** Not to mention all the trailers for ''the movie'' showing clips of Optimus Prime getting blown to bits while the Narrator asks, "Does Prime die?!"
*** Then the very next question the Narrator asks is: "Then, who will lead the Autobots?" There's not much need for a new leader unless the old one dies, ya know...
** The 20th Anniversary DVD set prominently shows Hot Rod opening the Matrix on the inside cover art. This '''literally happens in the last scene of the film'''. And while all the other chapter titles are deliciously subtle, "Megatron Transformed" might have been playing its hand a bit too much.

** The ending of "The Flower Plot", where it turns out that Petunia was actually a robot made by Plankton, would have been more surprising if it hadn't been posted outright on the [=SpongeBob=] Instagram account four days before the episode came out.

* The trailers for the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' episode "Magical Mystery Cure" included a clip of Fluttershy saying "You look just like a princess!", completely spoiling the game-changing twist (That everyone already knew about) that occurs the very end of the episode. And then, Hasbro proceeded to [[MerchandiseDriven plaster this plot twist all over all over their commercials and toys.]] Additionally, a sign depicting Twilight Sparkle with wings was actually sighted months before the episode was even announced, but was dismissed by most as an error from the artists while creators of the show even tried to save the twist by ''outright lying about it''.

** In the Hub trailers for the finale as well, the Royal Sisters and Princess Cadence lose their Cutie Marks when they transfer their magic to Princess Twilight, leaving them helpless to being made hostages/prisoners of the new villain. [[https://derpibooru.org/616737]][[https://derpibooru.org/616744]][[https://derpibooru.org/616753]][[https://derpibooru.org/616454]] The trailer also shows Twilight taking off so fast, she leave a crater in the ground, against a [[TheEndOfTheWorldAsWeKnowIt blood red sky.]]
*** About the only thing the trailer for the finale didn't spoil was that said villain was a FIM version of classic villain Tirek.
** In another instance of using TheReveal to sell more toys, Hasbro announced in 2013 a new set of "Rainbow Power" toys featuring the ponies covered in rainbows. Around the same time, the season 4 premiere introduced a mysterious locked chest whose contents were unknown. At the very end of the season 4 finale, the ponies finally manage to open the chest, and a magical rainbow comes out and makes them change into "Rainbow Power" versions of themselves as a SuperMode, allowing them to defeat the villain. Way to reveal your [[WhamEpisode big end-of-season twist]] early in order to [[MerchandiseDriven sell more toys]], Hasbro.
** In another minor example of the toys spoiling the theme: several months before the first advertisements for season 5 were out, a new set of toys were released, the theme this time being Cutie Mark Magic. Guess what the theme of season 5 is?
** The Discovery Family promo for season 8 features a particularly bad example of this, spoiling lots of big surprises like Starlight and Sunburst getting called by the Cutie Map, the return of Queen Chrysalis, and Spike getting wings.
*** Meanwhile, the synopsis for the season finale indicates Cozy Glow intends to take over the School of Friendship. This is despite the fact said character ''wasn't even introduced yet'', and when she was, she was a simple one-shot character about halfway through the season.

** There's the episode "[[Recap/PhineasAndFerbCandaceGetsBusted Candace Gets Busted]]". In order: It starts off as an intimate get-together, she has no problem inviting a few more people, but then it becomes a party, Linda calls the house and says they're coming home. Then guess what happens? [[ExactlyWhatItSaysOnTheTin "Young lady, you are so busted!"]] The title for the Latin American dub averts this, calling the episode "Candace's Party".

** The show's GrandFinale "[[Recap/PhineasAndFerbTheLastDayOfSummer The Last Day of Summer]]" completely spoils the end finale number "Curtain Call (Time Spent Together)".

* Played with in ''WesternAnimation/{{Archer}}''. The first episode of season 5 ends with a FantasySequence of Archer's that serves as a trailer for the rest of the season. It did include some genuine spoilers, but they were interlaced with things that never happened (like Cherlene getting kidnapped) and things that happened in completely different circumstances (like Lana going into labor).

!!Shows with their own pages]:

Examples relating to ''WesternAnimation/TotalDrama'' are [[TrailersAlwaysSpoil/TotalDrama on their own page]].

*** In the few days after Stevenbomb 4 alone, 2 clips were released on Cartoon Network's UK site as promos that revealed [[spoiler:the return of Malachite and Lapis Lazuli]], with said episode not airing until four months later.
*** It's arguably worse with the "Steven's Summer Adventures" event, during which the network aired the entire third season within a month and released significant portions of almost every episode early as "sneak peeks". In a particularly irritating move, they also uploaded clips and made news articles surrounding [[spoiler:Bismuth being introduced, in which it is also shown that Amethyst has received another design change]]. It kind of makes you wonder whether any major development in the show will ever be allowed to go un-spoiled ever again.
*** Possibly the most notorious case was in May 2018, due to it being an accident rather than an intentional marketing choice by the network. As part of a miniseries about animation production called "Drawn Podcast", Cartoon Network released an interview with Rebecca Sugar and Ian J.Q. In the video were short clips of unreleased episodes that were regarded as major spoilers for the remainder of the season, the most damning one being the final clip, which [[spoiler:showed Steven peacefully interacting with Blue and Yellow Diamond before being set down next to the Crystal Gems, which includes a un-bubbled Bismuth]]: something that greatly changes the show's status quo. Even worse, this came after many members of the Crewniverse begged the fandom not to spoil upcoming episodes. Needless to say, fans were ''furious'' at the network and [[http://hilaryflorido.tumblr.com/post/173496729353 members of the Crewniverse]] [[http://rocks-tumbled.tumblr.com/post/173528783431/ian-jqs-statement-on-the-leaks were pretty distraught]][[note]]Ian's original tweet is now deleted[[/note]]. The video was quickly pulled by the network upon realization and reuploaded without the spoilery parts, but by then the damage was done. Most of the spoiled episodes would air two months later, with the episode featuring that final clip premiering online the following month.
** A less spoilery example, but one promo for the ''WesternAnimation/RegularShow'' episode "Go Viral" ''actually showed the ending of the episode'' (more specifically, the Farting Bear that was a RunningGag in it [[spoiler:landing on Muscle Man]]).
** Before the ''WesternAnimation/ThePowerpuffGirls2016'' Episode Power-up Puff aired The [[https://www.youtube.com/watch?v=nb920xI_NrM Teaser]] [[spoiler:shows Blossom finally getting her new powers.]]

** The Season 2 preview spoils a few scenes, such as [[spoiler:Anne fighting Sasha again, Anne and the Plantars finding Anne's other friend Marcy, and as far as the posters show, Anne holding the Calamity Box, hinting she retrieves it sometime when the season begins.]]
** The Season 3 preview wasn't much better, as it showed [[spoiler:Marcy being possessed by King Andrias' master, which doesn't happen until the end of the episode where General Yunan and Lady Olivia try to rescue her.]]
* Played with in ''WesternAnimation/{{Archer}}''. The first episode of season 5 ends with a FantasySequence of Archer's that serves as a trailer for the rest of the season. It did include some genuine spoilers, but they were interlaced with things that never happened (like [[spoiler: Cherlene getting kidnapped]]) and things that happened in completely different circumstances (like [[spoiler: Lana going into labor]]).

** The promo for "Chipocalypse Now" spoiled the scene where [[spoiler: Cricket jumps off the Megastore roof to escape death in the hands of Chip.]]
* Promos for the first two ''[[Toys/BionicleGeneration2 Bionicle: The Journey to One]]'' episodes spoiled most of the ending by showing the sought-after Mask of Creation in the hands of the villains, from the very last scene. The only things not to get spoiled were [[spoiler: Umarak kidnapping Ketar and mutating into a hulking beast upon putting on the mask]], but these were already SpoiledByTheMerchandise aynway.

* ''WesternAnimation/DuckTales2017'': A [[https://www.youtube.com/watch?v=vnrFTduVry4 promo]] spoiled [[spoiler:Magica De Spell's]] appearance.

* More Creator/DisneyChannel screwing: In a ''WesternAnimation/FishHooks'' episode "Fail Fish", Milo has to pass a test in order to prevent himself from being held back a grade. This would have been taken as a surprise, if only they hadn't shown him [[spoiler:holding the test in his hand while he shouts for joy, implying that he has passed it!]] You might not be able to catch it if you're not paying attention, but it's still there.
* [[http://www.flickr.com/photos/kerrytoonz/2679457672/ This]] print advertisement for ''WesternAnimation/TheFlintstones'' special "Hollyrock-A-Bye-Baby" shows that Pebbles will have twins.
* The official trailer for ''WesternAnimation/HamsterAndGretel'' shows that Hamster can talk, which isn't revealed until literally the last few seconds of the 1st episode, as a closing joke.

** As if that wasn't enough, one of said ads actually showed a clip of Kim being shocked by Eric while he had an evil look on his face, which would pretty much give away that [[spoiler:he's really working for Drakken]].
* The trailer for the first season finale for ''WesternAnimation/TheLegendOfKorra'' was shown when there was still one episode to go before it, and spoiled that [[spoiler:the Equalists will get control of the city and begin mass bending removal]].

** The [=YESvember=] music video on Nickelodeon's [=YouTube=] channel includes a scene from the episode ''11 Louds a Leapin''', spoiling [[spoiler:the reveal of Mr. and Mrs. Loud's faces]]. The video was eventually reposted with that particular clip replaced with a scene from ''Series/TheThundermans'' episode "Winter Thunderland".

* A promo for the ''WesternAnimation/{{Motorcity}}'' episode "Like Father, Like Daughter" spoiled the ending in which [[spoiler:Julie agrees to take over [=KaneCo=] should something happen to her father]].

** To the great annoyance of viewers who had spent most of season 4 (if not longer) awaiting the frequently-referenced Equestria Games [[spoiler:(and especially of Rainbow Dash fans)]], a promo for the final episodes of the season included a very brief clip of [[spoiler:Spitfire crossing the relay finish line narrowly but noticeably ahead of Dash]].
** Also, a promo for the Season 4 finale "Twilight's Kingdom" shows that the Golden Oaks Library, where Twilight has stayed since moving to Ponyville [[spoiler:is destroyed by the new villain]].
** In the Hub trailers for the finale as well, the Royal Sisters and Princess Cadence [[spoiler:lose their Cutie Marks when they transfer their magic to Princess Twilight, leaving them helpless to being made hostages/prisoners of the new villain]]. [[https://derpibooru.org/616737]][[https://derpibooru.org/616744]][[https://derpibooru.org/616753]][[https://derpibooru.org/616454]] The trailer also shows Twilight [[spoiler:taking off so fast, she leave a crater in the ground, against a [[TheEndOfTheWorldAsWeKnowIt blood red sky]].]]
*** About the only thing the trailer for the finale didn't spoil was [[spoiler: that said villain was a FIM version of classic villain Tirek.]]

** The Discovery Family promo for season 8 features a particularly bad example of this, spoiling lots of big surprises like [[spoiler:Starlight and Sunburst getting called by the Cutie Map, the return of Queen Chrysalis, and Spike getting wings]].
*** Meanwhile, the synopsis for the season finale indicates [[spoiler:Cozy Glow]] intends to take over the School of Friendship. This is despite the fact said character ''wasn't even introduced yet'', and when she was, she was a simple one-shot character about halfway through the season.
** In ''WesternAnimation/MyLittlePonyEquestriaGirlsMagicalMovieNight: Movie Magic'', the plot involves figuring out who is sabotaging the production of a movie. The synopsis for ''Mirror Magic'' indicates that [[spoiler:Juniper Montage]] seeks revenge. Do the math.

** The commercials for "[[Recap/PhineasAndFerbMinorMonogram Minor Monogram]]" literally only showed the ending where [[spoiler:Vanessa falls for Monty]].

** Sometimes, this is a case of Episode Descriptions Always Spoil. For example, the description for "Mindy's Meteorite Stand" spoils the fact that Mindy's meteorite [[spoiler: really wasn't a meteorite, but the big rock she was sitting on is]], "Sunday Drive"'s description spoils that [[spoiler: the Propulsions weren't on Mars, but an Earth desert]], and the description for "Mindy's Mystery" spoiled that [[spoiler: the mystery smell came from moonflowers, and the bright light that was bothering Mitchell was from the moon itself]].

* The theatrical trailer for ''WesternAnimation/RugratsInParis'' had [[spoiler:Creator/DonLaFontaine proudly introduce Kimi as "the newest Rugrat",]] therefore cluing the viewers in on how the movie ends ([[spoiler:Chuckie's dad marries her mom) and her incorporation into the show]].
* Previews for the ''WesternAnimation/RockosModernLife'' special ''[[WesternAnimation/RockosModernLifeStaticCling Static Cling]]'' spoiled the reveal that the character formally known as Ralph [[spoiler:[[UsefulNotes/{{Transgender}} transitioned]] into a woman named Rachel]]. Most of the LGBTFanbase wasn't upset at the spoiler because the possibility of accurate representation in a kids' show [[Administrivia/TropesAreTools just got them more excited.]]

-->'''Narrator''': Will Professor Chaos's latest plot succeed and be the final undoing of Earth? And which boy has been chosen to be the replacement for Kenny? And which of these six South Park residents [[TonightSomeoneDies was killed, and will never be seen again]]? These questions will be answered... [[spoiler:[[ToBeContinuedRightNow right now]]. No, Tweek, and Ms. Choksondik.]]

** The made-for-TV movie "Atlantis [=SquarePantis=]" spoiled the climax where [[spoiler:Plankton finds out he stole a tank that shoots ice cream.]] It wasn't like it was in a montage or anything either, they blatantly displayed it up front because they thought the punchline was funny enough to include. It got even worse when they put a CommercialBreakCliffhanger right before this moment.

** Similarly, the twist ending featuring [[spoiler:the return of Handsome Squidward from "The Two Faces of Squidward"]] in "Squidward's Sick Daze" had been officially posted on social media before the episode premiered.

** The ending of "The Flower Plot", where it turns out that [[spoiler:Petunia was actually a robot made by Plankton]], would have been more surprising if it hadn't been posted outright on the [=SpongeBob=] Instagram account four days before the episode came out.

** The season 2 midseason trailer showed somewhat more of the [[Recap/StarWarsRebelsS2E19TwilightOfTheApprentice fin]][[Recap/StarWarsRebelsS2E20TwilightOfTheApprenticePartII ale]] than Creator/DaveFiloni would have liked, in particular [[spoiler:the Sith holocron, the return of Darth Maul and Ahsoka and Vader's duel]]. However, it did not spoil some particularly major plot points, namely [[spoiler:Ahsoka's UncertainDoom and Kanan getting blinded]].
** It's not a surprise to anyone keeping up with the show, but the season 4 trailer has a shot of [[spoiler:Kallus]] in a Rebel uniform, which to anyone only familiar with his character from the first two seasons would be unexpected to say the least.

** Not to mention all the trailers for ''the movie'' showing clips of [[spoiler:Optimus Prime getting blown to bits while the Narrator asks, "Does Prime die?!"]]
*** Then the very next question the Narrator asks is: [[spoiler:"Then, who will lead the Autobots?" There's not much need for a new leader unless the old one dies, ya know...]]
** The 20th Anniversary DVD set prominently shows [[spoiler:Hot Rod opening the Matrix]] on the inside cover art. This '''literally happens in the last scene of the film'''. And while all the other chapter titles are deliciously subtle, [[spoiler:"Megatron Transformed"]] might have been playing its hand a bit too much.

* The Comic Con trailer for the Season 2 opener of ''WesternAnimation/WanderOverYonder'' revealed the episode's twist that Lord Dominator is [[spoiler:[[SamusIsAGirl actually a woman]] who talks like a ditzy teen]].

* WesternAnimation/SpongeBobSquarePants:

* Examples relating to ''WesternAnimation/TotalDrama'' are [[TrailersAlwaysSpoil/TotalDrama on their own page]].

* ''WesternAnimation/TotalDrama'':
** The original trailer for ''Total Drama World Tour'' (back when it was still being called ''Total Drama the Musical'') spoiled Leshawna's elimination; also, if you look quick, it also spoils Ezekiel's elimination as well, as you can see he doesn't get a bag of airline peanuts after DJ.
** A midseason trailer for ''Total Drama World Tour'' spoils when Lindsay's elimination happens.
** Trailers for ''All Stars'' not only shows Alejandro out of the robot (though the opening sequence does as well), but also Lindsay and Jo's elimination.
** Another ''World Tour'' example would be where a promotional flier for the season used to have accidentally given away the final two of the last season. This was especially bad because, at the time, the flier came out when there were about six contestants remaining. It was changed before the season aired, but the information had ''long'' been out by then.
** An Italian trailer for ''Pahkitew Island'' shows Beardo's elimination.

* The episode "Squid Noir" From ''{{WesternAnimation/SpongeBob SquarePants}}'' was completely spoiled, when Nickelodeon launched a block called "You Bring The Color", and the website called youbringthecolor.com to use the pictures from the end of this episode so kids can color the characters from the ending. No one even knew, until the altered ending got aired.
** The made-for-TV movie ''Atlantis Squarepantis'' spoiled the climax where [[spoiler:Plankton finds out he stole a tank that shoots ice cream.]] It wasn't like it was in a montage or anything either, they blatantly displayed it up front because they thought the punchline was funny enough to include. It got even worse when they put a CommercialBreakCliffhanger right before this moment.

* The Season 2 preview of ''WesternAnimation/{{Amphibia}}'' spoils a few scenes, such as [[spoiler:Anne fighting Sasha again, Anne and the Plantars finding Anne's other friend Marcy, and as far as the posters show, Anne holding the Calamity Box, hinting she retrieves it sometime when the season begins.]]

*** Possibly the most notorious case was in May 2018, due to it being an accident rather than an intentional marketing choice by the network. As part of a miniseries about animation production called "Drawn Podcast", Cartoon Network released an interview with Rebecca Sugar and Ian J.Q. In the video were short clips of unreleased episodes that were regarded as major spoilers for the remainder of the season, the most damning one being the final clip, which [[spoiler:showed Steven peacefully interacting with Blue and Yellow Diamond before being set down next to the Crystal Gems, which includes a un-bubbled Bismuth]]: something that greatly changes the show's StatusQuo. Even worse, this came after many members of the Crewniverse begged the fandom not to spoil upcoming episodes. Needless to say, fans were ''furious'' at the network and [[http://hilaryflorido.tumblr.com/post/173496729353 members of the Crewniverse]] [[http://rocks-tumbled.tumblr.com/post/173528783431/ian-jqs-statement-on-the-leaks were pretty distraught]][[note]]Ian's original tweet is now deleted[[/note]]. The video was quickly pulled by the network upon realization and reuploaded without the spoilery parts, but by then the damage was done. Most of the spoiled episodes would air two months later, with the episode featuring that final clip premiering online the following month.

** The Russian version of Cartoon Network has proved to be extremely spoiler filled twice so far. First, it revealed ''WesternAnimation/{{Unikitty}}'' before Cartoon Network announced the show, and then revealed what Bliss looked like prior to the Power of Four PPG 2016 special.