History TrailersAlwaysSpoil / WesternAnimation

** 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 thus far 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.

* ''WesternAnimation/StarWarsTheCloneWars'' restrained itself fairly well when it comes to foreshadowing Anakin's eventual transformation into Darth Vader, so naturally Cartoon Network was eager to promote [[Recap/StarWarsTheCloneWarsS3E16GhostsOfMortis an episode]] where Anakin has a vision of what he will become. Some pretty sweet clips were shown in the promos, but when the actual episode was aired, you realized they showed you the whole scene!

* ''WesternAnimation/StarWarsTheCloneWars'' restrained itself fairly well when it comes to foreshadowing Anakin's eventual transformation into Darth Vader, so naturally Cartoon Network was eager to promote [[Recap/StarWarsTheCloneWarsS3E15GhostsOfMortis an episode]] where Anakin has a vision of what he will become. Some pretty sweet clips were shown in the promos, but when the actual episode was aired, you realized they showed you the whole scene!

* ''WesternAnimation/StarWarsTheCloneWars'' has restrained itself fairly well when it comes to foreshadowing Anakin's eventual transformation into Darth Vader, so naturally, Cartoon Network was eager to promote an episode where Anakin has a vision of what he will become. They show us some pretty sweet clips in the promos, but when the actual episode was aired, you realized they showed you the whole scene!

** The season 2 midseason trailer showed somewhat more of the finale 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]].

* During its original airing on WesternAnimation/TheDisneyAfternoon, the trailer for Part 1 of the ''WesternAnimation/{{Ducktales}}'' GrandFinale, "The Golden Goose", showed the cliffhanger ending of Huey, Dewey, and Louie getting turned into gold statues.

* The trailer for the 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 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.
* From Disney XD's ''WesternAnimation/StarVsTheForcesOfEvil'', [[https://www.youtube.com/watch?v=NJD0CIP5KVY Promos]] from "[[TheMovie The Battle of Mewni]]" spoiled most of the movie, including the [[https://www.youtube.com/watch?v=Nt-nSh_L-nU teaser]].
* ''WesternAnimation/Ducktales2017'': A [[https://www.youtube.com/watch?v=vnrFTduVry4 promo]] spoiled [[spoiler:Magica De Spell's]] appearance.

* 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.

* The trailer for the series finale of ''WesternAnimation/DannyPhantom'', "Phantom Planet", was almost completely spoiled just through the commercials. In ''one commercial alone'', it was spoiled, though being ''outright stated by the narrator'', that Danny loses his powers, gets them back again later, gets together with Sam, and enlists the help of every other ghost in the series to stop the Disasteroid.

* ''WesternAnimation/Ducktales2017'': A [[https://www.youtube.com/watch?v=vnrFTduVry4 promo]] spoiled [[spoiler:Magica De Spell's]] apperance.

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

** Possibly the most notorious case thus far 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 still having yet to premiere.

*** 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 PGG 2016 special.

** One promo for the premiere week in September blatantly showed a scene in "Library Cards" where [=SpongeBob=] is screaming like mad as [[spoiler:a fire breaks out in his library]]. They didn't show ''how'' it happened, though. Additionally, the first thing the promo showed was what is presumably the aftermath of the [[spoiler:fire]], as [=SpongeBob=] [[spoiler:[[ClothingDamage is ONLY wearing his pants]] and is bawling his eyes out]].
* From Disney XD's ''WesternAnimation/StarVsTheForcesOfEvil'', [[https://www.youtube.com/watch?v=NJD0CIP5KVY Promos]] from The Battle of Mewni Spoiled most of the movie, Including the [[https://www.youtube.com/watch?v=Nt-nSh_L-nU Teaser]].

* The [=YESvember=] music video on Nickelodeon's [=YouTube=] channel includes a scene from the ''WesternAnimation/TheLoudHouse'' episode ''11 Louds a Leapin''', spoiling [[spoiler:the reveal of Mr. and Mrs. Loud's faces]].

* ''WesternAnimation/Ducktales2017
A [[https://www.youtube.com/watch?v=vnrFTduVry4 promo]] spoils Magica De spell's apperance.

* Some ''WesternAnimation/TheLoudHouse'' promos can be spoilerific. [[https://www.youtube.com/watch?v=o7pd9uGrgrU This promo]] [[{{Irony}} gave away the ending of "No Spoilers"]], and [[https://www.youtube.com/watch?v=1ES0z6scHh4 this promo]] gave away the climax AND the ending of "Snow Way Down", too.
* 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.
* 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]]).
* When ''WesternAnimation/BatmanTheAnimatedSeries'' originally aired on Fox, some of its promos could be pretty spoilerific, too. [[https://www.youtube.com/watch?v=PUIE7oEL-ok This one]] outright shows the cliffhanger ending of "Heart of Steel, Part 1" in it.
* 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.

* From Disney XD's ''WesternAnimation/StarVsTheForcesOfEvil'', [[https://www.youtube.com/watch?v=NJD0CIP5KVY Promos]] from The Battle of Mewni Spoiled most of the movie, Including the [[https://www.youtube.com/watch?v=Nt-nSh_L-nU Teaser]].

* ''WesternAnimation/StevenUniverse'' tends to get hit very, very hard with this trope. In the few days after Stevenbomb 4 alone, 2 clips were released on Cartoon Network's UK site as promos that reveal [[spoiler: the return of Malachite and Lapis Lazuli]]. Especially infuriating due to the show's long hiatuses, which meant that the spoilers didn't even appear until almost 4 months later, when the episodes finally aired.
** It's arguably gotten even worse with the "Steven's Summer Adventures" event, in which the network is releasing significant portions of pretty much every episode early as "sneak peeks." In a particularly irritating move, they have 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 thus far was in May 2018. As part of a miniseries about creating cartoons called "Drawn Podcast", Cartoon Network released an interview with Rebecca Sugar and Ian J.Q. In the video were screenshots of unreleased episodes that were regarded as major spoilers for not just the current season, but possibly even '''the show as a whole.''' Even worse, this came after many members of the Crewniverse begged the fandom not to spoil the 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]] and the video was quickly pulled after backlash, then reuploaded without the spoilery parts.

* The theatrical trailer for ''WesternAnimation/RugratsInParis'' had Creator/DonLaFontaine [[spoiler:proudly introduce Kimi as "the newest Rugrat",]] therefore cluing the viewers in [[spoiler:on how the movie ends (Chuckie's dad marries her mom) and her incorporation into the show]].

* Some ''WesternAnimation/TheLoudHouse'' promos can be spoilerific. [[https://www.youtube.com/watch?v=o7pd9uGrgrU This promo]] gave away the ending of "No Spoilers", and [[https://www.youtube.com/watch?v=1ES0z6scHh4 this promo]] gave away the climax AND the ending of "Snow Way Down", too.

** Also, in the Season 4 finale "Twilight's Kingdom", 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]] In the trailer as well, Twilight is seen [[spoiler:taking off so fast, she leave a crater in the ground, against a [[TheEndOfTheWorldAsWeKnowIt blood red sky]].]]

** 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 despite said character having been introduced as a simple one-shot character about halfway through the season.

** 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]].

* Parodied in ''WesternAnimation/TheSimpsons'' with an old ''[[ShowWithinAShow Radioactive Man]]'' film reel. A giant missile heads toward Earth, and cuts to a freeze frame while the announcer says, "Will Radioactive Man save the planet Earth? Find out next time!" The freeze frame shows ''Earth being split in half with a giant mushroom butt.''

** Possibly the most notorious case thus far was in May 2018. As part of a miniseries about creating cartoons called "Drawn Podcast", Cartoon Network released an interview with Rebecca Sugar and Ian J.Q. In the video were screenshots of unreleased episodes that were regarded as major spoilers for not just the current season, but possibly even '''the show as a whole.''' Even worse, this came after many members of the Crewniverse begged the fandom not to spoil the upcoming episodes. Needless to say, fans were ''furious'' at the network and [[http://hilaryflorido.tumblr.com/post/173496729353 members of the Crewniverse were pretty distraught,]] and the video was quickly pulled after backlash.

** Possibly the most notorious case thus far was in May 2018. As part of a miniseries about creating cartoons called "Drawn Podcast", Cartoon Network released an interview with Rebecca Sugar and Ian J.Q. In the video were screenshots of unreleased episodes that were regarded as major spoilers for not just the current season, but possibly even '''the show as a whole.''' Even worse, this came after many members of the Crewniverse begged the fandom not to spoil the upcoming episodes. Needless to say, fans were ''furious'' at the network and [[http://hilaryflorido.tumblr.com/post/173496729353 members of the Crewniverse were pretty distraught.]]

** Possibly the most notorious case thus far was in May 2018. As part of a miniseries about creating cartoons, Cartoon Network released screenshots of unreleased episodes that were regarded as major spoilers for not just the current season, but possibly even '''the show as a whole.''' Even worse, this came after many members of the Crewniverse begged the fandom not to spoil the upcoming episodes. Needless to say, fans were ''furious'' at the network and [[http://hilaryflorido.tumblr.com/post/173496729353 members of the Crewniverse were pretty distraught.]]

** Trailers for ''All Stars'' not only shows Alejandro out of the robot, but also Lindsy and Jo's elimination.

** For a particularly {{egregious}} one, the beginning of the trailer for ''WesternAnimation/TeenTitansGo'''s "Justice League's Next Top Talent Idol Star" (no, that's not a typo) Shows that Robin, Raven, and Cyborg were the final contestants.

* The ''WesternAnimation/SpongeBobSquarePants'' 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 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 PGG 2016 special.