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* In ''WesternAnimation/StevenUniverse'': While Halloween doesn't exist, "[[Recap/StevenUniverseS1E41HorrorClub Horror Club]]" has all the elements of a typical Halloween episode. Fall, blowing leaves, cooler weather, scarecrows, costumes, ScaryFlashlightFace, and a haunted lighthouse. WordOfGod has also confirmed that it's a Halloween special.
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* In ''WesternAnimation/StevenUniverse'': While Halloween doesn't exist, none of the traditional holidays exist in this show's universe, "[[Recap/StevenUniverseS1E41HorrorClub Horror Club]]" has all the elements of a typical Halloween episode. Fall, blowing leaves, cooler weather, scarecrows, costumes, ScaryFlashlightFace, and a haunted lighthouse. WordOfGod has also confirmed that it's a Halloween special.
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* ''WesternAnimation/HotelTransylvaniaTheSeries'' has "The Legend of Pumpkin Guts", where Mavis and her friends choose to sneak out on Halloween night and Dracula has to keep his daughter safe before Pumpkin Guts finds her and turns her into a pumpkin.
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* The ''WesternAnimation/FilmationsGhostbusters'' episode "Back to the Past" took place during Halloween.
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* In spite of the whole show taking place during the summer, ''WesternAnimation/CampLazlo'' has a Halloween Episode in "Hallobeanies", where Lumpus tries to gorge on candy at Camp Kidney only to be bothered by Lazlo, Clam, and Raj trick-or-treating.
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** The Season 5 episode, [[Recap/MyLittlePonyFriendshipIsMagicS5E21ScareMaster "Scare Master"]], Fluttershy steps out of her cottage on Nightmare Night and tries to celebrate the holiday with the other Mane Five. It's very awkward at first, until she manages to pull off the scare of a lifetime on them, which is where we learn why Fluttershy doesn't traditionally celebrate Nightmare Night: she hates seeing her friends scared and frightened, even if it is just for laughs.
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** The Season 5 episode, [[Recap/MyLittlePonyFriendshipIsMagicS5E21ScareMaster [[Recap/MyLittlePonyFriendshipIsMagicS5E15ScareMaster "Scare Master"]], Fluttershy steps out of her cottage on Nightmare Night and tries to celebrate the holiday with the other Mane Five. It's very awkward at first, until she manages to pull off the scare of a lifetime on them, which is where we learn why Fluttershy doesn't traditionally celebrate Nightmare Night: she hates seeing her friends scared and frightened, even if it is just for laughs.
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* ''WesternAnimation/TheAngryBeavers'': "The Day The World Got Really Screwed Up" has the Beavers trick-or-treating at what turns out to be the home of Oxnard Montalvo, their favorite B-movie actor. Chaos ensuses when an alien monster invades the house and brings to life statues of the monsters from Montalvo's movies.
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* The ''WesternAnimation/SpiderMan1981'' episode "Revenge of the Green Goblin" took place on Halloween and had Peter Parker attending a costume party with Betty Brant before having to deal with the Green Goblin.
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* ''WesternAnimation/TheSimpsons''' annual "WesternAnimation/TreehouseOfHorror" episodes, which are anthologies containing [[ThreeShorts three short stories]] with a horror theme (PlayedForLaughs, of course, and non-canonical to the show's universe). Oddly enough, in later seasons most of these have premiered ''after'' Halloween, due to {{Fox}}'s World Series coverage pre-empting its Sunday prime time lineup at the end of October each year. Season 27 had ''two'' Halloween Episodes, the usual "Treehouse of Horror" and "Halloween of Horror", a canon episode that takes place in Springfield on Halloween.
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* ''WesternAnimation/TheSimpsons''' annual "WesternAnimation/TreehouseOfHorror" episodes, which are anthologies containing [[ThreeShorts three short stories]] with a horror theme (PlayedForLaughs, of course, and non-canonical to the show's universe). Oddly enough, in later seasons most of these have premiered ''after'' Halloween, due to {{Fox}}'s {{Creator/FOX}}'s World Series coverage pre-empting its Sunday prime time lineup at the end of October each year. Season 27 had ''two'' Halloween Episodes, the usual "Treehouse of Horror" and "Halloween of Horror", a canon episode that takes place in Springfield on Halloween.
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** The following year had "Terror Tales of the Park II" which had the same format of three separate shorts, but had a framing device to link them all together; in this case, the Park staff are on a journey to a Halloween party and tell the stories to pass the time. Mordecai's story, "Payback", involved Mordecai accidentally killing his Uncle Steve, and Uncle Steve's corpse subsequently haunts Mordecai to settle his UnfinishedBusiness. Margaret's story, "Party Bus", has Mordecai, Rigby, Margaret and Eileen take the "Party Bus" to the movies instead of their late taxi; however, as the party on the bus proceeds and the other guests start to collapse from partying too hard, they realize that [[LifeDrinker this party's]] [[RapidAging a killer]]. The final story, told by Benson, is "Wallpaper Man", an homage to Stephen King's story ''TheLawnmowerMan". Mordecai and Rigby are tasked with applying new wallpaper to the house but they are swayed by a television offer from Jan the Wallpaper Man, who will wallpaper an entire house for free. However, Jan's sinister red-and-black wallpaper turns the house's interior into a claustrophobic maze, with the other park employees trapped in the center. Mordecai and Rigby must rescue their co-workers and confront Jan, who has a dark agenda and a [[BigCreepyCrawlies monstrous secret...]]
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** The following year had "Terror Tales of the Park II" which had the same format of three separate shorts, but had a framing device to link them all together; in this case, the Park staff are on a journey to a Halloween party and tell the stories to pass the time. Mordecai's story, "Payback", involved Mordecai accidentally killing his Uncle Steve, and Uncle Steve's corpse subsequently haunts Mordecai to settle his UnfinishedBusiness. Margaret's story, "Party Bus", has Mordecai, Rigby, Margaret and Eileen take the "Party Bus" to the movies instead of their late taxi; however, as the party on the bus proceeds and the other guests start to collapse from partying too hard, they realize that [[LifeDrinker this party's]] [[RapidAging a killer]]. The final story, told by Benson, is "Wallpaper Man", an homage to Stephen King's story ''TheLawnmowerMan".''Film/TheLawnmowerMan". Mordecai and Rigby are tasked with applying new wallpaper to the house but they are swayed by a television offer from Jan the Wallpaper Man, who will wallpaper an entire house for free. However, Jan's sinister red-and-black wallpaper turns the house's interior into a claustrophobic maze, with the other park employees trapped in the center. Mordecai and Rigby must rescue their co-workers and confront Jan, who has a dark agenda and a [[BigCreepyCrawlies monstrous secret...]]
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* The ''WesternAnimation/{{Beetlejuice}}'' cartoon's Halloween episode, "Laugh Of The Party," had B.J. livening up Lydia's Halloween party with Party People In A Can. They're all Neitherworld denizens, so the party was rather unorthodox, even for Halloween. A year later, the episode "Bewitched, Bothered and Beetlejuiced" had Lydia dressed as a witch for Halloween, only for her cat Percy to get catnapped by a soiree of witches.
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* The ''WesternAnimation/{{Beetlejuice}}'' cartoon's Halloween episode, :
** "Laugh Of TheParty," Party" had B.J. livening up Lydia's Halloween party with Party People In A Can. They're all Neitherworld denizens, so the party was rather unorthodox, even for Halloween. A year later, the Halloween.
** The episode "Bewitched, Bothered and Beetlejuiced" had Lydia dressed as a witch for Halloween, only for her cat Percy to get catnapped by a soiree of witches.
** "Laugh Of The
** The episode "Bewitched, Bothered and Beetlejuiced" had Lydia dressed as a witch for Halloween, only for her cat Percy to get catnapped by a soiree of witches.
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** "Little Gift Shop of Horrors" wasn't specifically Halloween-themed, but it aired around Halloween and was an AnthologyEpisode not unlike "Treehouse of Horror". It features Grunkle Stan inviting a lost tourist into the Mystery Shack and regaling him with a trio of "Tales Designed to Sell My Merchandise": one in which Stan loses his hands to a vindictive witch, one where Mabel's pet pig becomes super-intelligent, and one where the Pines deal with a stop-motion animator's creations run amok.
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** "Little Gift Shop of Horrors" wasn't specifically Halloween-themed, but it aired around Halloween and was an AnthologyEpisode a VignetteEpisode not unlike "Treehouse of Horror". It features Grunkle Stan inviting a lost tourist into the Mystery Shack and regaling him with a trio of "Tales Designed to Sell My Merchandise": one in which Stan loses his hands to a vindictive witch, one where Mabel's pet pig becomes super-intelligent, and one where the Pines deal with a stop-motion animator's creations run amok.
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* ''WesternAnimation/ElTigre'' episode "The Grave Escape"; Taking place on ''Dia De Los Muertos'', Manny feels he's getting too old for the holiday (Despite his father and Grandpapi being all for it) when Sartana of the Dead attacks with a monster formed from Miracle City's unremembered dead("Sartana of the Dead!?" Cries Rodolpho, "Attacking on the Day of the Dead!? Actually, that makes sense."). Manny and Frida end up getting sent down to the Land of the Dead, where they recruit Riveras from the past to get back to the surface in order to defeat Sartana, including the original [[LegacyCharacter El Tigre]], which does prove that (For Manny) indecision ''does'' run in the family.
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* ''WesternAnimation/ElTigre'' episode "The Grave Escape"; Taking place on ''Dia De Los Muertos'', Manny feels he's getting too old for the holiday (Despite his father and Grandpapi being all for it) when Sartana of the Dead attacks with a monster formed from Miracle City's unremembered dead("Sartana dead ("Sartana of the Dead!?" Cries cries Rodolpho, "Attacking on the Day of the Dead!? Actually, that makes sense."). Manny and Frida end up getting sent down to the Land of the Dead, where they recruit Riveras from the past to get back to the surface in order to defeat Sartana, including the original [[LegacyCharacter El Tigre]], which does prove that (For Manny) indecision ''does'' run in the family.
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* The fact that ''WesternAnimation/GravityFalls'' takes place over a single summer doesn't stop it from having a HalloweenEpisode. "Summerween" explores [[YouMeanXmas Summerween]], a second Halloween in the summer because Gravity Falls loves the holiday that much. Soos tells the legend of the Summerween Trickster, a phantom who kills those who do not accept the holiday. Dipper, wanting to attend a party instead of trick-or-treat, attracts the Trickster who holds the lives of he and his friends in the balance in exchange for five hundred pieces of candy. [[NightmareFuel/GravityFalls Knock knock, indeed]].
* ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'' has the hour-long special ''[[PoorlyDisguisedPilot Underfist: Halloween Bash]]'', which was going to be a SpinOff (until Creator/CartoonNetwork decided not to make the series). It involves Halloween candy taking over the world and Irwin's vampire-mummy powers finally forming. General fan consensus is that it was amazing.
** Previously there was also "Billy and Mandy's Jacked Up Halloween" and "Grim or Gregory?".
* ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'' has the hour-long special ''[[PoorlyDisguisedPilot Underfist: Halloween Bash]]'', which was going to be a SpinOff (until Creator/CartoonNetwork decided not to make the series). It involves Halloween candy taking over the world and Irwin's vampire-mummy powers finally forming. General fan consensus is that it was amazing.
** Previously there was also "Billy and Mandy's Jacked Up Halloween" and "Grim or Gregory?".
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* ''WesternAnimation/GravityFalls'':
** The fact that''WesternAnimation/GravityFalls'' the show takes place over a single summer doesn't stop it from having a HalloweenEpisode. "Summerween" explores [[YouMeanXmas Summerween]], a second Halloween in the summer because Gravity Falls loves the holiday that much. Soos tells the legend of the Summerween Trickster, a phantom who kills those who do not accept the holiday. Dipper, wanting to attend a party instead of trick-or-treat, attracts the Trickster who holds the lives of he and his friends in the balance in exchange for five hundred pieces of candy. [[NightmareFuel/GravityFalls Knock knock, indeed]].\n* ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'' has
** "Little Gift Shop of Horrors" wasn't specifically Halloween-themed, but it aired around Halloween and was an AnthologyEpisode not unlike "Treehouse of Horror". It features Grunkle Stan inviting a lost tourist into thehour-long special Mystery Shack and regaling him with a trio of "Tales Designed to Sell My Merchandise": one in which Stan loses his hands to a vindictive witch, one where Mabel's pet pig becomes super-intelligent, and one where the Pines deal with a stop-motion animator's creations run amok.
* ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy''
** "Grim or Gregory?" takes place on Halloween, and involves Grim accidentally swapping places with a kid in a Grim Reaper costume while escorting Billy and Mandy during trick-or-treating.
** In "Billy and Mandy's Jacked Up Halloween", Grim relates the story of Jack O'Lantern, who in this version was a mischievous medieval peasant who incurred the wrath of the king and was executed. When Grim came for Jack's soul, Jack stole Grim's scythe and bargained with him for immortality, which Grim granted... but not before [[OffWithHisHead taking Jack's human head in retaliation]]. It just so happens that Jack O'Lantern is living in an abandoned house in Endsville, and he plots to steal Grim's scythe from Billy (who's borrowing it for his Halloween costume) and get revenge on Grim.
** ''[[PoorlyDisguisedPilot Underfist: HalloweenBash]]'', which Bash]]'' was going to be a SpinOff (until Creator/CartoonNetwork decided not to make the series). It involves Halloween candy taking over the world and Irwin's vampire-mummy powers finally forming. General fan consensus is that it was amazing.
** Previously there was also "Billy and Mandy's Jacked Up Halloween" and "Grim or Gregory?".amazing.
** The fact that
** "Little Gift Shop of Horrors" wasn't specifically Halloween-themed, but it aired around Halloween and was an AnthologyEpisode not unlike "Treehouse of Horror". It features Grunkle Stan inviting a lost tourist into the
* ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy''
** "Grim or Gregory?" takes place on Halloween, and involves Grim accidentally swapping places with a kid in a Grim Reaper costume while escorting Billy and Mandy during trick-or-treating.
** In "Billy and Mandy's Jacked Up Halloween", Grim relates the story of Jack O'Lantern, who in this version was a mischievous medieval peasant who incurred the wrath of the king and was executed. When Grim came for Jack's soul, Jack stole Grim's scythe and bargained with him for immortality, which Grim granted... but not before [[OffWithHisHead taking Jack's human head in retaliation]]. It just so happens that Jack O'Lantern is living in an abandoned house in Endsville, and he plots to steal Grim's scythe from Billy (who's borrowing it for his Halloween costume) and get revenge on Grim.
** ''[[PoorlyDisguisedPilot Underfist: Halloween
** Previously there was also "Billy and Mandy's Jacked Up Halloween" and "Grim or Gregory?".
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* The 2010 version of ''[[WesternAnimation/PoundPuppies2010 Pound Puppies]]'' had "A Nightmare on Pound Street". It wasn't a Halloween Episode in the sense of the "[[WesternAnimation/TheSimpsons Treehouse of Horror]]", but it was set on Halloween, and the hopeful adoptee was a "creepy-looking" puppy named [[Franchise/ANightmareOnElmStreet Freddy]].
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* The 2010 version of ''[[WesternAnimation/PoundPuppies2010 Pound Puppies]]'' had "A Nightmare on Pound Street". It wasn't a Halloween Episode in the sense of the "[[WesternAnimation/TheSimpsons Treehouse of Horror]]", but it was set on Halloween, and the hopeful adoptee was [[UglyCute a "creepy-looking" puppy puppy]] named [[Franchise/ANightmareOnElmStreet Freddy]].
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* ''WesternAnimation/LiloAndStitchTheSeries'' has the episode "Spooky", featuring an experiment that can [[YourWorstNightmare transform into their worst fears.]]
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* ''WesternAnimation/LiloAndStitchTheSeries'' has the episode "Spooky", "[[Recap/LiloAndStitchTheSeriesS1E6Spooky Spooky]]", featuring an experiment that can [[YourWorstNightmare transform into their worst fears.]]
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* ''WesternAnimation/ReadyJetGo'' had the half-hour special "Jet's First Halloween", which focuses on Jet celebrating his first Halloween on Earth. The kids also learn all about lunar eclipses, and Jet dresses up as a witch and flies across the moon.
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* ''WesternAnimation/WeBareBears'': "Charlie's Halloween Thing" is a VignetteEpisode hosted by Charlie the Sasquatch, featuring spooky stories starring the Bears and their friends.
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* ''WesternAnimation/WeBareBears'': "Charlie's Halloween Thing" is a VignetteEpisode hosted by Charlie the Sasquatch, featuring a pair of spooky stories starring the Bears and their friends.friends; one involves the Bears buying haunted dolls online, the other involves Chloe turning into a were-bear.
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* ''WesternAnimation/HeyArnold'''s Halloween episode was a homage to Creator/OrsonWelles' 1938 "Radio/TheWarOfTheWorlds" radio broadcast.
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* ''WesternAnimation/HeyArnold'''s Halloween episode was a homage to Creator/OrsonWelles' 1938 "Radio/TheWarOfTheWorlds" radio broadcast. Arnold and Gerald play a prank on the boarding house by hijacking the radio with a fake news report about aliens invading. Unfortunately, their broadcast gets picked up by the news and , coupled with the duo's use of the water tower as the [=UFO=] causing a power outage and their whole class dressed as aliens scaring everyone, sends the whole city into a panic.
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* ''WesternAnimation/WeBareBears'': "Charlie's Halloween Thing" is a VignetteEpisode hosted by Charlie the Sasquatch, featuring spooky stories starring the Bears and their friends.
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* ''WesternAnimation/WeBareBears'': "Charlie's Halloween Thing" is a VignetteEpisode hosted by Charlie the Sasquatch, featuring spooky stories starring the Bears and their friends.
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* ''WesternAnimation/AaahhRealMonsters'': When Ickis, Krumm, and Oblina go to do their daily scares, there's a mixup with a kid wearing a Halloween costume of an Ickis-like creature. Krumm and Oblina go to the kid's Halloween party, believed by everyone to be just kids in costumes, and the kid goes to the monster world. The day after Halloween, everything is cleared.
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* ''WesternAnimation/AaahhRealMonsters'': ''WesternAnimation/AaahhRealMonsters'', "The Switching Hour": When Ickis, Krumm, and Oblina sneak out of the school to go to do their daily scares, scaring on Halloween (against [[SternTeacher the Gromble's]] orders), there's a mixup mix-up with a kid wearing a Halloween costume of an Ickis-like creature. Krumm and Oblina go to the kid's Halloween party, believed by everyone to be just kids in costumes, and the kid goes to the monster world. The day after Halloween, everything is cleared.Krumm and Oblina have to clear things up without the Gromble finding out.
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* ''WesternAnimation/TheLoudHouse'' has the upcoming episode "Tricked!" all about Lincoln, Clyde and his younger sisters going trick-to-treating to get candy while Lucy sets up on a haunted maze.
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* ''WesternAnimation/TheLoudHouse'' has the upcoming episode "Tricked!" all about Lincoln, Clyde and his younger sisters going trick-to-treating to get candy while Lucy sets up on a haunted maze.
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** The Season 5 episode, [[Recap/MyLittlePonyFriendshipIsMagicS5E21ScareMaster "Scare Master"]], Fluttershy steps out of her cottage on Nightmare Night and tries to celebrate the holiday with the other Mane Five. It's very awkward at first, until she manages to pull off the scare of a lifetime on them, which is where we learn why Fluttershy doesn't traditionally celebrate Nightmare Night, she hates seeing her friends scared and frightened, even if it is just for laughs.
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** The Season 5 episode, [[Recap/MyLittlePonyFriendshipIsMagicS5E21ScareMaster "Scare Master"]], Fluttershy steps out of her cottage on Nightmare Night and tries to celebrate the holiday with the other Mane Five. It's very awkward at first, until she manages to pull off the scare of a lifetime on them, which is where we learn why Fluttershy doesn't traditionally celebrate Nightmare Night, Night: she hates seeing her friends scared and frightened, even if it is just for laughs.
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** "Night of the Living Pharmacists" is another one. It's about Doofenshmirtz creating an inator that turns people into zombie versions of himself.
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** "Night of the Living Pharmacists" is another one. It's about Doofenshmirtz creating an inator -inator that turns people into zombie versions of himself.himself, only for the effect to be accidentally made contagious and cause a ZombieApocalypse.
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* In ''WesternAnimation/StevenUniverse'': While Halloween doesn't exist, "[[Recap/StevenUniverseS1E41HorrorClub Horror Club]]" has all the elements of a typical Halloween episode. Fall, blowing leaves, cooler weather, scarecrows, costumes, flashlight under the chin, and a haunted lighthouse. WordOfGod has also confirmed that it's a Halloween special.
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* In ''WesternAnimation/StevenUniverse'': While Halloween doesn't exist, "[[Recap/StevenUniverseS1E41HorrorClub Horror Club]]" has all the elements of a typical Halloween episode. Fall, blowing leaves, cooler weather, scarecrows, costumes, flashlight under the chin, ScaryFlashlightFace, and a haunted lighthouse. WordOfGod has also confirmed that it's a Halloween special.
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* In "Every Poe Has A Silver Lining", a ''WesternAnimation/TimeSquad'' episode, the squad visits Edgar Allan Poe the day before Halloween and attempt to fix him of his TastesLikeDiabetes attitude. When Poe finally becomes the moody, dark-hearted writer the world knows him to be he walks outside to a rainy Halloween night and scares some trick-or-treaters.
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* ''WesternAnimation/TimeSquad'': In "Every Poe Has A Silver Lining", a ''WesternAnimation/TimeSquad'' episode, the squad visits Edgar Allan Poe the day before Halloween and attempt to fix him of his TastesLikeDiabetes attitude. When Poe finally becomes the moody, dark-hearted writer the world knows him to be he walks outside to a rainy Halloween night and scares some trick-or-treaters.
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* ''WesternAnimation/WeBareBears'': "Charlie's Halloween Thing" is a VignetteEpisode hosted by Charlie the Sasquatch, featuring spooky stories starring the Bears and their friends.
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'''[[HalloweenEpisode Halloween Episode - main trope page]]'''
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* ''WesternAnimation/TheAmazingWorldOfGumball'' has the episode simply titled ''"Halloween"''. Carrie the ghost helps get Gumball and Darwin into a ghosts-only Halloween party using ghost potion. However, an overdose of the potion turns Gumball and Darwin completely into ghosts, triggering a CosmicDeadline to get them back into their bodies or else they'll be dragged into the underworld. To make matters worse, [[spoiler:Anais also drinks the potion and Gumball must save her as well]].
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* ''WesternAnimation/TheAmazingWorldOfGumball'' has the ''WesternAnimation/TheAmazingWorldOfGumball'':
** The episode simply titled''"Halloween"''."Halloween". Carrie the ghost helps get Gumball and Darwin into a ghosts-only Halloween party using ghost potion. However, an overdose of the potion turns Gumball and Darwin completely into ghosts, triggering a CosmicDeadline CelestialDeadline to get them back into their bodies or else they'll be dragged into the underworld. To make matters worse, [[spoiler:Anais also drinks the potion and Gumball must save her as well]].well]].
** "The Scam" is another episode set on Halloween ([[ComicBookTime despite the characters being the same age as the previous one]]). Gumball and Carrie pull a MonsterProtectionRacket to get everyone's candy, and Gumball exploits Darwin's crush on Carrie to rope him into it. [[spoiler:They end up bringing a real monster into town.]]
** The episode simply titled
** "The Scam" is another episode set on Halloween ([[ComicBookTime despite the characters being the same age as the previous one]]). Gumball and Carrie pull a MonsterProtectionRacket to get everyone's candy, and Gumball exploits Darwin's crush on Carrie to rope him into it. [[spoiler:They end up bringing a real monster into town.]]
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** ''WesternAnimation/TheGarfieldShow'' doesn't have a flat-out Halloween episode, but there is a semi-scary episode known as "Curse of the Were-Dog" which involves Odie turning into a giant-monster dog, due to a rare astronomic constellation. (But it only occurs when the moon is showing, as Odie turns back into his normal self when the moon is covered by clouds. Because of this, Garfield gets blamed for Odie's actions.)
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* ''WesternAnimation/BluesClues'' has the episodes "What is Blue Afraid Of?" (season 1) and "Blue's Big Costume Party" (season 3). The former is more of a semi-creepy-related episode without any mentions of Halloween, while the latter is a flat-out Halloween special.
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* ''WesternAnimation/BluesClues'' has the episodes "What is Blue Afraid Of?" (season 1) and "Blue's Big Costume Party" (season 3). The former is more of a semi-creepy-related semi-scary episode without any mentions of Halloween, while the latter is a flat-out Halloween special.
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* ''WesternAnimation/FostersHomeForImaginaryFriends'' has two Halloween episodes. The first one "Bloooo" (season 1) involves Mac and Bloo getting sick from playing in the rain. Bloo turns pale from his cold, causing Wilt, Eduardo and Coco to accidentally mistake him for a ghost. The second one "Nightmare on Wilson Way" (season 5) involves Bloo playing a prank on Mr. Herriman, which backfires when the latter turns into a zombie, [[spoiler:only to be revealed that it was revenge towards the former]].
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* ''WesternAnimation/FostersHomeForImaginaryFriends'' has two Halloween episodes. The first one "Bloooo" (season 1) involves Mac and Bloo getting sick from playing in the rain. Bloo turns pale from his cold, causing Wilt, Eduardo and Coco to accidentally mistake him for a ghost. The second one "Nightmare on Wilson Way" (season 5) involves Bloo playing a prank on Mr. Herriman, which backfires when the latter turns into a zombie, [[spoiler:only to be revealed that it was revenge towards payback against the former]].
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* "WesternAnimation/TheSmurfs Halloween Special" was really a regular Saturday-morning cartoon episode, and it was mostly about celebrating Jokey's birthday, though one of the subplots is that Hogatha the witch wants to celebrate Halloween by scaring little children, only for her holiday to be ruined by one of Gargamel's spells. There's also "Monster Smurfs", where the Smurfs celebrated a similar holiday called Spook-A-Smurf Eve. A more horror-related episode "I Was A Brainy Weresmurf" involves Brainy Smurf turning into a werewolf after getting scratched by a stinky flower.
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* "WesternAnimation/TheSmurfs Halloween Special" was really a regular Saturday-morning cartoon episode, and it was mostly about celebrating Jokey's birthday, though one of the subplots is that Hogatha the witch wants to celebrate Halloween by scaring little children, only for her holiday to be ruined by one of Gargamel's spells. There's also "Monster Smurfs", where the Smurfs celebrated a similar holiday called Spook-A-Smurf Eve. A more horror-related semi-scary episode "I Was A Brainy Weresmurf" involves Brainy Smurf turning into a werewolf after getting scratched by a stinky flower.
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** Some horror-related episodes include "Graveyard Shift" (season 2), "Ghost Host" (season 4), "The Curse of Bikini Bottom" (season 7) and "Don't Look Now" (season 9).
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** Some horror-related Semi-scary episodes include "Squidward the Unfriendly Ghost" (season 1), "Graveyard Shift" (season 2), "Ghost Host" (season 4), "The Curse of Bikini Bottom" (season 7) and "Don't Look Now" (season 9).
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* "WesternAnimation/TheSmurfs Halloween Special" was really a regular Saturday-morning cartoon episode, and it was mostly about celebrating Jokey's birthday, though one of the subplots is that Hogatha the witch wants to celebrate Halloween by scaring little children, only for her holiday to be ruined by one of Gargamel's spells. There's also "Monster Smurfs", where the Smurfs celebrated a similar holiday called Spook-A-Smurf Eve.
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* "WesternAnimation/TheSmurfs Halloween Special" was really a regular Saturday-morning cartoon episode, and it was mostly about celebrating Jokey's birthday, though one of the subplots is that Hogatha the witch wants to celebrate Halloween by scaring little children, only for her holiday to be ruined by one of Gargamel's spells. There's also "Monster Smurfs", where the Smurfs celebrated a similar holiday called Spook-A-Smurf Eve. A more horror-related episode "I Was A Brainy Weresmurf" involves Brainy Smurf turning into a werewolf after getting scratched by a stinky flower.
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* ''WesternAnimation/FostersHomeForImaginaryFriends'' has two Halloween episodes. The first one "Bloooo" (season 1) involves Mac and Bloo getting sick from playing in the rain. Bloo turns pale from his cold, causing Wilt, Eduardo and Coco to accidentally mistake him for a ghost. The second one "Nightmare on Wilson Way" (season 5) involves Bloo playing a prank on Mr. Herriman, which backfires when the latter turns into a zombie, [[spoiler:only to be revealed that it was revenge towards the former]].
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* ''WesternAnimation/BluesClues'' has the episodes "What is Blue Afraid Of?" (season 1) and "Blue's Big Costume Party" (season 3). The former is more of a semi-creepy-related episode without any mentions of Halloween, while the latter is a flat-out Halloween special.
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** Some horror-related episodes include "Graveyard Shift" (season 2), "Ghost Host" (season 4), "The Curse of Bikini Bottom" (season 7) and "Don't Look Now" (season 9).
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* ''WesternAnimation/SpongebobSquarepants'' has "Scaredy Pants" and "I Was a Teenage Gary" (aired on October 28, 1999) and "Ghoul Fools" (from season 8).
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* ''WesternAnimation/SpongebobSquarepants'' has "Scaredy Pants" and "I Was a Teenage Gary" (aired on October 28, 1999) and 1999), "Ghoul Fools" (from season 8).8) and "The Legend of Boo-Kini Bottom" (from season 11).
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** Previously there was also "Billy and Mandy's Jacked Up Halloween".
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** Previously there was also "Billy and Mandy's Jacked Up Halloween".Halloween" and "Grim or Gregory?".
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* ''WesternAnimation/TheLoudHouse'' has the episode "The Price of Admission" all about a scary movie and Lincoln's bad nightmares induced from watching it against his parents' wishes.
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* ''WesternAnimation/TheLoudHouse'' has the upcoming episode "The Price of Admission" "Tricked!" all about a scary movie Lincoln, Clyde and Lincoln's bad nightmares induced from watching it against his parents' wishes.younger sisters going trick-to-treating to get candy while Lucy sets up on a haunted maze.
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* ''WesternAnimation/MiloMurphysLaw'': "Milo's Halloween Scream-a-Torium!" has Milo building a haunted house and trying to use it to scare Zack. Meanwhile, [[TimePolice Cavendish and Dakota]] take advantage of the last Halloween ever to learn how it's supposed to work and have fun.
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* ''WesternAnimation/AaahhRealMonsters'': When Ickis, Krumm, and Oblina go to do their daily scares, there's a mixup with a kid wearing a Halloween costume of an Ickis-like creature. Krumm and Oblina go to the kid's Halloween party, believed by everyone to be just kids in costumes, and the kid goes to the monster world. The day after Halloween, everything is cleared.
* The 1992 ''WesternAnimation/TheAddamsFamily'' animated series had a Halloween episode called "Puttergeist", which had Wednesday and Pugsley investigate the legend of a golfer ghost known as the Puttergeist.
* ''WesternAnimation/AdventureTime'':
** An episode parodies ''TabletopGame/{{Clue}}'' and ''Literature/AndThenThereWereNone'' in the episode "The Creeps". Members of the cast are assembled at a [[HauntedCastle mountain-top castle]]. Each of the characters gains an alias as part of the invitation. The costume party goes awry as characters are killed off and the party turns into a mystery when it is revealed that a ghost has possessed one of them and intends to murder them. [[spoiler:Jake and Lady Rainicorn reveal that they are the ghost and that none of the character were killed. Finn asks how Jake got the house to come to life. [[SequelHook Jake doesn't know what Finn is talking about and the crew leaves the castle.]] Finn keeps the memory in "his vault". The ghost that appears becomes a ''very'' important ChekhovsGunman later.]]
** A second Halloween special, "From Bad to Worse", aired a week later. The episode deals with a ZombieApocalypse and is a continuation of the premiere "Slumber Party Panic". Finn, Jake, Rainicorn and LSP are seen running through the Candy Kingdom avoiding the now zombified denizens. After making it to the castle, Princess Bubblegum explains the infection is her and Cinnamon Bun's fault. Princess Bubblegum says she will make the antidote again but before she can, she is bitten by a zombie. Before being changed, she tells Finn to [[YouWillKnowWhatToDo let science do the work]] to create the formula again. It is up to the four to create the formula. In an EurekaMoment, Finn realizes that PB's last words meant for them to use [[spoiler:Science, the lab rat. [[AmplifiedAnimalAptitude The lab rat creates the formula]] and Finn tests in on Jake who returns to normal. Unfortunately, the effects are reversed after Jake is bitten again. Out of ideas, Finn covers himself in the antidote and [[HeroicSacrifice flings himself into the fray]] and is chewed by the zombies]]. The last scene shows the Candy Kingdom [[spoiler: fully cured, [[UnexplainedRecovery Finn in a state of well-being]] and Princess Bubblegum awarding Science with a medal for heroic bravery]].
* ''WesternAnimation/TheAdventuresOfJimmyNeutron'' takes great pleasure in pushing this trope to its stereotypical limit. In the episode, Jimmy creates a monster wheel designed to turn his friends into authentic monsters (a closer examination of the wheel shows Michael Jackson as an option) - the only problem is, the invention works a little too well, and Carl and Sheen end up as a real vampire and a real werewolf. They bite Cindy and Libby, who then join the ranks of bloodsuckers/flesheaters, and before you know it the whole town is out for a good ol' fashioned monster-mob.
* ''WesternAnimation/AllGrownUp'''s Halloween Episode had Chuckie freaking out over the possibility that Tommy might have a crush on Kimi and so running off on his own on Halloween when there's dangerous teenage gangs about.
** The show also had two other horror-themed episodes that would have fit this trope, only they weren't set on Halloween. "Curse of Reptar" was an AffectionateParody of ''Poltergeist'' and "Interview With a Campfire" had the kids get lost in a colonial mine that was said to be haunted.
* ''WesternAnimation/TheAmazingWorldOfGumball'' has the episode simply titled ''"Halloween"''. Carrie the ghost helps get Gumball and Darwin into a ghosts-only Halloween party using ghost potion. However, an overdose of the potion turns Gumball and Darwin completely into ghosts, triggering a CosmicDeadline to get them back into their bodies or else they'll be dragged into the underworld. To make matters worse, [[spoiler:Anais also drinks the potion and Gumball must save her as well]].
* ''WesternAnimation/AmericanDad'' did one of these where Stan tried to outdo his neighbor's haunted house. His solution? Bring in caged serial killers. [[spoiler:And then Roger frees them...]]
* ''WesternAnimation/AmericanDragonJakeLong'' version had Jake throwing a party for both monsters and humans. Of course, he almost brings danger down on their heads in the form of the Huntsclan.
* ''WesternAnimation/AquaTeenHungerForce'' episode "The Shaving" takes place on Halloween. Shake tries to teach a monster named Willie Nelson the way of scaring someone, by the end it seems Willie can't scare anyone. [[NotSoHarmless Then the trio looks in the attic.]]
* ''WesternAnimation/{{Arthur}}'' has the episode "Hic or Treat" which is set on Halloween and involves a plot of DW having a case of hiccups she can't get rid of until Arthur scares her. While it isn't strictly set on Halloween, "The Fright Stuff" involves a costume party, and a ghost character.
* ''WesternAnimation/AvatarTheLastAirbender'''s "The Puppetmaster" was aired (and possibly meant) as a Halloween episode, since the holiday doesn't exist in their universe.
* ''WesternAnimation/TheBackyardigans'' episode "Scared Of You" is this in all but name.
* The ''WesternAnimation/{{Ben 10}}'' episode ''Last Laugh'' is considered a Halloween episode, despite the fact that the series is supposed to take place during the summer.
* The ''WesternAnimation/{{Beetlejuice}}'' cartoon's Halloween episode, "Laugh Of The Party," had B.J. livening up Lydia's Halloween party with Party People In A Can. They're all Neitherworld denizens, so the party was rather unorthodox, even for Halloween. A year later, the episode "Bewitched, Bothered and Beetlejuiced" had Lydia dressed as a witch for Halloween, only for her cat Percy to get catnapped by a soiree of witches.
* The PBS adaptation of ''Literature/BerenstainBears'' has an episode called Trick or Treat.
* ''WesternAnimation/BobsBurgers'' - one episode has the kids trick-or-treating without the parents for the first time. They take the ferry to the greener pastures of the island where the rich families live. Another episode has them miss Halloween altogether when they get stuck in their alleyway cardboard box fort at the mercy of a creepy classmate of Louise's. Still another has Tina falling for a ghost discovered in the Belchers' basement.
* The ''WesternAnimation/{{CatDog}}'' episode "[=CatDogula=]" had Dog get bitten by Peruvian vampire ticks, so Cat tries desperately to find a cure. In the process, their friends are also bitten by the vampire ticks and turned into vampires. At the end, Cat drowns everyone in garlic juice, which cures everyone (even the Peruvian ticks). At the end, Winslow shows up, and reveals that he was bitten by a werewolf.
* ''WesternAnimation/TheCatInTheHatKnowsALotAboutThat'' has ''The Cat in the Hat Knows a Lot About Halloween'', a nearly hour-long special featuring the group journeying so that Sally and Nick can find the perfect Halloween costumes.
* ''WesternAnimation/CelebrityDeathmatch'' had two Halloween episodes with matches such as FrankensteinsMonster vs. the WolfMan, Wrestling/TheUndertaker vs. Captain Doody (a demon possessing Nicky Jr.), and Creator/SarahMichelleGellar vs. a vampire.
* ''WesternAnimation/ClassOfTheTitans'' had a Halloween episode in which Hecate, the goddess of witchcraft, tried to escape from her prison in the moon. It also introduced Theresa's mystical powers.
* ''WesternAnimation/TheClevelandShow'':
** "It's the Great Pancake, Cleveland Brown", where Cleveland upsets Cleveland Jr. by telling him he is too old to trick or treat and Rallo eats too much candy.
** Another episode, "Nightmare on Grace Street", had a look-a-like friend that was annoying everyone with bad jokes the whole episode, then [[spoiler:went Ax Crazy and tried to kill both Cleveland and his entire family.]] Cleveland and Rallo spent the episode trying to prove they weren't scared.
* The PBS animated adaptation of ''Literature/CliffordTheBigRedDog'' has the episode "Boo!" all about Jetta bragging about how brave she is. After the whole town is spooked by a ghost movie, Jetta learns that everyone has fears but it is OK.
* On ''WesternAnimation/CreativeGalaxy'', "Arty's Boo-tastic Halloween" is a double story-length special in which Arty goes out trick-or-treating in the Creative Galaxy with his friends, visits a number of planets, and helps out along the way.
* The TV series adaptation of ''Literature/CuriousGeorge'' has the one-hour special ''A Halloween Boo Fest'' involving George trying to create the perfect Halloween costume and learning the story of the haunted scarecrow named No-Noggin.
* ''WesternAnimation/DangerMouse'' had "The Good, the Bad and the Motionless", which took place on Halloween, as DM tells Colonel K that Penfold is carving up a swede.
-->'''Colonel K:''' Good heavens, DM. I didn't know he could play tennis!
-->'''D.M.:''' Tennis? Oh, no. Not Bjørn Borg, sir. Not that sort of swede. It's the vegetable kind.
* ''WesternAnimation/DannyPhantom'' had "Fright Night" where Danny temporarily steals a sword from Fright Knight, the [[AnthropomorphicPersonification ghostly Anthropomorphic Personification of Halloween]]. Hell ensues (literally).
* WesternAnimation/DonaldDuck starred in a bunch of shorts with a semi-scary atmosphere, such as "Donald Duck and the Gorilla", "Donald's Lucky Day", and "Duck Pimples", but the true Halloween episode is fans' favorite "Trick or Treat", where Donald's [[JerkAss assholish]] treatment of his nephews leads to a witch helping the boys to get the best of their uncle.
* ''WesternAnimation/{{Doug}}'' had two that come to mind. One (during the Nickelodeon run) a half hour special that had Doug going to the amusement park Funky Town to ride a scary ride and end up getting locked in it after the park shuts down for the night. Another (Disney run this time) had him (and eventually the other kids) thinking his best friend Skeeter was a vampire.
* ''WesternAnimation/EdEddNEddy's Boo-Haw-Haw'' had the Eds attempt to follow a map to "Spookyville", the ultimate trick-or-treating neighborhood. Unfortunately, an overdose of B-movies on [[CloudCuckoolander Ed's]] part causes him to hallucinate that the other kids of the cul-de-sac are movie monsters out to get him and his friends, and HilarityEnsues.
* ''WesternAnimation/ElTigre'' episode "The Grave Escape"; Taking place on ''Dia De Los Muertos'', Manny feels he's getting too old for the holiday (Despite his father and Grandpapi being all for it) when Sartana of the Dead attacks with a monster formed from Miracle City's unremembered dead("Sartana of the Dead!?" Cries Rodolpho, "Attacking on the Day of the Dead!? Actually, that makes sense."). Manny and Frida end up getting sent down to the Land of the Dead, where they recruit Riveras from the past to get back to the surface in order to defeat Sartana, including the original [[LegacyCharacter El Tigre]], which does prove that (For Manny) indecision ''does'' run in the family.
* On ''WesternAnimation/EllaTheElephant'', "Frankie's Perfect Pumpkin" has the kids in costumes and trick-or-treating, though most of the story is actually spent on hunting for Frankie's lost pumpkin.
* ''WesternAnimation/TheFairlyOddparents'': Remember the ''Buffy'' Halloween episode where [[BecomingTheCostume everyone became the costumes they were wearing]]? Same plot, only with the Yugopotamians and four OmnicidalManiac robots thrown in for variety.
* ''WesternAnimation/FamilyGuy'' only has one ("Halloween On Spooner Street"), oddly. It was from season 9, where Chris and Meg went to a party, Stewie and Brian dealt with a bully that stole Stewie's candy and Quagmire getting revenge for a prank by Peter and Joe. [[spoiler:Lois becomes the bully for the bullies and actually scares Stewie a bit, Quagmire pretends to be possessed by a Japanese UsefulNotes/WorldWarII pilot, and ''[[SurpriseIncest Meg and Chris accidentally make out with each other]]''.]]
* ''WesternAnimation/{{Futurama}}'''s Season 2 episode "The Honking", a parody of werewolf movies where after spending a night at his late uncle's haunted castle, Bender is transformed into a werecar that runs over people every night. Season 6's "Ghost in the Machines" and Season 7's "Murder on the Planet Express" could also be considered as examples. The former sees Bender become a robot ghost and begin to haunt Fry by possessing machinery while the latter is a parody of ''Film/TheThing1982'' and ''Film/{{Alien}}''.
* ''[[WesternAnimation/GarfieldSpecials Garfield's Halloween Adventure]]'' has the titular cat and Odie trick-or-treating. But when attempting to cross a river on a boat for extra candy, the two end up in a haunted mansion. Also features [[http://www.youtube.com/watch?v=BiIJw6dIAwQ really]] [[EarWorm catchy songs]].
* ''WesternAnimation/{{Gargoyles}}'' had "Eye of the Beholder", in which Goliath and Elisa are forced to team up with Xanatos to save the life of Xanatos' fiancee Fox after a cursed artifact turns her into a monster. We also get to see Goliath, Elisa, and the other Manhattan Clan gargoyles attend a Halloween party where Elisa goes dressed as [[Disney/BeautyAndTheBeast Belle]].
* The fact that ''WesternAnimation/GravityFalls'' takes place over a single summer doesn't stop it from having a HalloweenEpisode. "Summerween" explores [[YouMeanXmas Summerween]], a second Halloween in the summer because Gravity Falls loves the holiday that much. Soos tells the legend of the Summerween Trickster, a phantom who kills those who do not accept the holiday. Dipper, wanting to attend a party instead of trick-or-treat, attracts the Trickster who holds the lives of he and his friends in the balance in exchange for five hundred pieces of candy. [[NightmareFuel/GravityFalls Knock knock, indeed]].
* ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'' has the hour-long special ''[[PoorlyDisguisedPilot Underfist: Halloween Bash]]'', which was going to be a SpinOff (until Creator/CartoonNetwork decided not to make the series). It involves Halloween candy taking over the world and Irwin's vampire-mummy powers finally forming. General fan consensus is that it was amazing.
** Previously there was also "Billy and Mandy's Jacked Up Halloween".
* Despite being predated by 4 months in the US and one month in Canada, the ''WesternAnimation/{{Grojband}}'' episode "Dance of the Dead" takes place during Halloween night.
* Creator/HannaBarbera's version of ''WesternAnimation/TheLittleRascals'' had one: "Fright Night", in which three of the Rascals went trick-or-treating. I don't recall all of the details, but I do remember that Darla [[WholesomeCrossdresser dressed so as to resemble Alfalfa]].
** Four other episodes were similarly themed, though not specifically set on Halloween: "Rascals' Revenge", in which Butch and Woim dare the Rascals to enter an abandoned house; "Grin and Bear It", in which the Rascals' camping trip is disrupted when the Phantom Lumberjack abducts Porky; "Falling Heir", in which Spanky inherits a supposedly haunted castle, and "Wash and Werewolf", in which the boys watch a 3D horror movie and Alfalfa later thinks he's become a werewolf.
* ''WesternAnimation/HarveyBeaks'': The first season had a TwoShorts-styled one, in which the first segment sees Harvey and his friends visit a corn maze that proves much scarier than it seems, while the second was about the cast telling pass-around scary story. In the second season, it was a half-hour episode parodying [[YetAnotherChristmasCarol A Christmas Carol]]. Both episodes also feature a goblin-like creature named the Blargus, who is Littlebark Grove's spirit of Halloween (he only appears in the first season episode's second segment though).
* ''WesternAnimation/HeyArnold'''s Halloween episode was a homage to Creator/OrsonWelles' 1938 "Radio/TheWarOfTheWorlds" radio broadcast.
* On ''WesternAnimation/HomeMovies'' the gang was on their way to a Halloween party but they all ended up at the hospital when Brendon's stepmom went into labor and Coach [=McGuirk=] had a heart attack. Not the best place for Melissa to dress like the Grim Reaper.
-->'''Coach:''' Omigod, it's Death.
-->'''Melissa:''' Coach, it's me, Melissa!
-->'''Coach:''' Omigod, it's Melissa.
* ''WesternAnimation/HouseOfMouse'':
** ''[[WesternAnimation/MickeysHouseOfVillains Mickey's House of Villains]]'' could be considered a Halloween episode. There, the Disney animated villains kick all of the good guys out of the House and rename it the House of Villains. Jafar gets Mickey's job as the master of ceremonies, while Captain Hook and Hades get Donald and Goofy's jobs as chief assistants. The rest is your usual HOM stuff, with showing scary shorts instead of the usual upbeat ones.
** Other examples include the episodes "Halloween with Hades" and "House Ghosts".
* There's one in ''WesternAnimation/InvaderZim'' called the Halloween Spectacular of Spooky Doom, in which inside Dib's head is a parallel universe with real monsters.
* The sixth episode of ''WesternAnimation/JackieChanAdventures''' fourth season, "Fright Fight Night" is set on Halloween, dealing with Paco being possessed by one of the [[PlotCoupons Oni masks]] and the heroes having to get it off before [[BigBad Tarakudo]] is able to corrupt him.
* ''WesternAnimation/{{Jem}}'' had a Halloween episode, "Trick or Techrat", having the Holograms fixing a haunted opera house--and Terri, one of the Starlight Girls, learning not to scare at every thing.
* ''WesternAnimation/JohnnyTest'':
** The episode titled "Johnny Trick or Treat". Johnny accepts a dare by a mysterious card impaled on his door. In order to see a real haunted house and cash in on a large amount of candy, he must spend a night in a house and wear a tutu. He is joined by Dukey and Jillian, only to find the house is rigged with traps. They successfully complete all of the tasks, only to be eaten by a giant maggot. With Jillian in danger, [[spoiler: the master of the house, Darth Vegan, tries to save them, only to have his plans ruined. When it is revealed that there was no candy]], Johnny and the rest of the crew teleport to a party attended by Susan, Mary and Agents Black and White, where he [[spoiler: wins a candy making machine for first place in a costume contest]].
** The second episode called "The Johnny Who Saved Halloween". Johnny and several other kids are in a contest to collect the most candy in order to win a literal mountain of candy.
* ''WesternAnimation/JuliusJr'' has the season 1 episode ''Dressed for Spook-cess'', where Worry Bear and Ping muct co-operate to match their costumes before they go trick-or-treating.
* ''WesternAnimation/{{Kaeloo}}'': The episode "Let's Play Scaredy Cat", where [[TheDitz Stumpy]] raises the dead and causes a zombie apocalypse, forcing Mr. Cat to fight off all the zombies [[spoiler: by himself after Kaeloo and Quack Quack also get turned into zombies.]]
* ''WesternAnimation/KickButtowski'' had the [[IdiosyncraticEpisodeNaming predictably named]] "Kick Or Treat", where Kick accepts a challenge from Kendall to go trick-treating at the scary OldDarkHouse across the street. Turns out the house is [[spoiler: owned by a nice old lady who loves Halloween so much that she went completely overboard with the special effects.]]
* The ''WesternAnimation/KimPossible'' episode "October 31st".
* There have been a couple in ''WesternAnimation/KingOfTheHill''. The first one concerns a religious fanatic trying to ban Halloween from Arlen. In the second (definitely one of the series' darker episodes), Luann moves in with a schizophrenic millionaire who owns a pork processing company.
* ''WesternAnimation/TheLifeAndTimesOfJuniperLee'' one had the title character trying to fix a spell that turned monsters into humans (which their idea of a Halloween costume) and having to go through a complicated barter system which at the end involve her having to wrestle (as in WWE-like wrestle) a monster to help get the last thing she needs.
* ''WesternAnimation/LiloAndStitchTheSeries'' has the episode "Spooky", featuring an experiment that can [[YourWorstNightmare transform into their worst fears.]]
* Interestingly, ''WesternAnimation/LittleBear'' has an episode that appears to take place on Halloween, but nobody refers to it as such. Instead, the holiday is known as "Goblin Night", when goblins are said to play tricks on people. In the episode, Little Bear and his friends dress up (Mitzi is even wearing a goblin costume), try to scare each other and eat corn and pumpkin seeds in front of a campfire.
* The short-lived ''WesternAnimation/LloydInSpace'' had an episode in which the gang goes into a HauntedHouse type thing, only to come out to a version of the space station in the far future where it's completely deserted and a monster has apparently killed everyone. It turns out to be some variation of AllJustADream, but man, that whole episode was basically MoodWhiplash.
* ''WesternAnimation/LooneyTunes'' released at least two Halloween specials, titled "Bugs Bunny's Halloween Hijinks", and "Bugs Bunny's Howl-Oween Special".
* The ''WesternAnimation/LooneyTunes'' short:
** "Broomstick Bunny" has Witch Hazel concerned about her appearance, wanting to stay the ugliest witch of all ("I'm so afraid of growing pretty as I get older!") then encounters WesternAnimation/BugsBunny, trick-or-treating in an ugly witch costume.
** "A-Haunting We Will Go" has WesternAnimation/DaffyDuck's nephew encountering Witch Hazel while trick-or-treating in the exact same costume Bugs used. (The rest of the cartoon has Daffy dealing with WesternAnimation/SpeedyGonzales, who Witch Hazel has turned into her exact double so he can fill in for her while she takes a vacation.)
** "Corn on the Cop" is also set on Halloween, and has Daffy and [[WesternAnimation/PorkyPig Porky]] as police officers trying to apprehend a bank robber who looks just like Granny.
* ''WesternAnimation/TheLoudHouse'' has the episode "The Price of Admission" all about a scary movie and Lincoln's bad nightmares induced from watching it against his parents' wishes.
* ''WesternAnimation/{{MAD}}'' had the episode "Kitchen Nightmares Before Christmas/How I Met Your Mummy". Within the episode were ''WesternAnimation/TheNightmareBeforeChristmas'' and ''Series/HowIMetYourMother'' references, as the title implies. Other references included [[Franchise/{{Scream}} ScreamX20]], [[ScoobyDoo Scooby Doo: Ruining Halloween Since 1969]], and ''WesternAnimation/VeggieTales [[Series/TalesFromTheCrypt from the Crypt]]''.
* The 2000 series of ''Literature/{{Madeline}}'' called the New Adventures of Madeline had a Halloween episode where the girls visit America and learn about Halloween, with a subplot of a mysterious lost earring.
* ''WesternAnimation/TheMagicSchoolBus'' had a Halloween special that was two spookily themed episodes from the series tied together by a live-action sequence where an old caretaker told two kids terrifying stories about [[spoiler:kids learning about sound and bats.]]
* Disney XD's WesternAnimation/MarvelUniverse block has had several, usually involving Doctor Strange, Blade, and/or Dormammu showing up.
** ''WesternAnimation/UltimateSpiderMan'' had three: the first was a one-hour special that premiered on the Disney Channel rather than Disney XD and sees Spider-Man team up with Blade and several other Marvel Monsters (named the "Howling Commandos") to stop Dracula after he puts Spidey's team under mind control and has them recover an artifact that would make him invulnerable to sunlight. The second is a crossover with ''Series/{{Jessie}}'' where Spidey and Jessie Prescott are stuck in a museum on Halloween night while the latter accidentally resurrects Morrigane Le Fey. The third has Spidey, Doctor Strange, and Scott Lang team against Baron Mordo when he casts a spell to make all the trick-or-treaters [[BecomingTheCostume become what they're dressed up as]] to feed off the negative energy from the spell and make himself stronger.
** ''WesternAnimation/HulkAndTheAgentsOfSMASH'' also had a Halloween team-up with the Howling Commandos, where the two groups must put aside their differences to prevent Dormammu from enslaving all of humanity.
** ''WesternAnimation/AvengersAssemble'' had its episode featured Hulk, Iron Man, and Thor work with Strange to recover the Eye of Agamotto when its stolen by Dormammu.
* ''WesternAnimation/TheMask'': Skillit uses his powers to summon a zombie cowboy, a ghost knight, and a demonically-possesed warlock to crash the Coco Bongo's annual Halloween party. In the end, the Mask vanishes them to Skillit's home dimension by making them say the word "mask" backwards.
* ''WesternAnimation/MaxAndRuby'' has at least ''three'' Halloween Episodes.
* ''WesternAnimation/TheMightyB'' has Bessie trapped in a cat costume and...[[BizarroEpisode stuff happens]].
* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'':
** There's "[[Recap/MyLittlePonyFriendshipIsMagicS2E4LunaEclipsed Luna Eclipsed]]" where the ponies celebrate the day as [[YouMeanXMas "Nightmare Night"]] and a certain literal [[EnsembleDarkhorse/MyLittlePonyFriendshipIsMagic Ensemble Darkhorse]] shows up, being determined to change her frightening public image she made [[Recap/MyLittlePonyFriendshipIsMagicS1E1MareInTheMoon back in]] [[Recap/MyLittlePonyFriendshipIsMagicS1E2ElementsOfHarmony the past]]. At first, it wasn't really working out all that well for Princess Luna, [[spoiler: and it goes to the point where she ends up decreeing the cancellation of Nightmare Night forever]]! However, [[spoiler: Luna eventually learns that the young ponies actually ''like'' being scared by her, and she declares that Nightmare Night's back on]].
** The Season 5 episode, [[Recap/MyLittlePonyFriendshipIsMagicS5E21ScareMaster "Scare Master"]], Fluttershy steps out of her cottage on Nightmare Night and tries to celebrate the holiday with the other Mane Five. It's very awkward at first, until she manages to pull off the scare of a lifetime on them, which is where we learn why Fluttershy doesn't traditionally celebrate Nightmare Night, she hates seeing her friends scared and frightened, even if it is just for laughs.
* ''WesternAnimation/OverTheGardenWall'' is an odd example, because depending on how you look at it, either [[Recap/OverTheGardenWallChapter9IntoTheUnknown the ninth episode]] or [[spoiler:the whole miniseries]] takes place on Halloween, due to [[spoiler:[[YearInsideHourOutside no time passing in our world]] while Wirt and Greg are in the Unknown]].
* The ''WesternAnimation/PacMan'' cartoon also had two Halloween episodes: "Pacula" and "Trick or Chomp".
* ''WesternAnimation/PepperAnn'' had Pepper Ann and Milo get ready for trick-or-treating, only for Pepper Ann to consider the two of them too old after all of their classmates tell her that they don't plan to trick-or-treat. [[spoiler:Pepper Ann and Milo go despite this, and an ending montage reveals that their classmates secretly joined in.]]
* ''WesternAnimation/PhineasAndFerb'' has a few.
** While not taking place during Halloween, "One Good Scare Ought to Do It" and "The Monster of Phineas-n-Ferbenstein" aired in October for Season 1.
** "That's the Spirit" and "The Curse of Candace" aired together, but only the first one is specifically Halloween themed. The second one has Candace thinking she's a vampire.
** Season 4 has "Drusselsteinoween" and "[[FaceYourFears Face Your Fear]]", the first one has Vanessa throwing a Halloween party in the castle her father inherited. The second one was about Doofenshmirtz creating a machine that cause animals to grow bigger and he tested it on a bat [[WhyDidItHaveToBeSnakes which he is afraid of.]] Like before only the first one was on Halloween.
** Another episode is "Terrifying Tri-State Trilogy of Terror", which just like the Simpsons Tree House of Horror series was in a three shorts format. Although the shorts were not Halloween themed, they did air in October.
** "Night of the Living Pharmacists" is another one. It's about Doofenshmirtz creating an inator that turns people into zombie versions of himself.
* ''WesternAnimation/PinkyAndTheBrain'': Pinky sells his soul to the Devil so that Brain can take over the world. [[ChessWithDeath Brain then challenges Satan to a gymnastic competition for Pinky's soul]], and loses. However, when Pinky signed the contract giving his soul to the Devil, the Devil forgot to give him some sort of gizmo (with a really weird name and a vague explanation of its function), thus rendering the contract null and void, and saving Pinky's soul.
* The 2010 version of ''[[WesternAnimation/PoundPuppies2010 Pound Puppies]]'' had "A Nightmare on Pound Street". It wasn't a Halloween Episode in the sense of the "[[WesternAnimation/TheSimpsons Treehouse of Horror]]", but it was set on Halloween, and the hopeful adoptee was a "creepy-looking" puppy named [[Franchise/ANightmareOnElmStreet Freddy]].
* ''WesternAnimation/TheProudFamily'' has "A Hero For Halloween" - as the title suggests, it doubles as a SuperheroEpisode.
* ''WesternAnimation/TheRealGhostbusters'' had three such episodes.
** "When Halloween Was Forever": A pair of ghosts free Samhain, the Spirit of Halloween, whose goal is to create a permanent Halloween night.
** "Halloween 2½": Samhain is freed from the Containment Unit and tries to again achieve his goal, while also seeking revenge against the Ghostbusters.
** "The Halloween Door": Seeking to end Halloween forever, a MoralGuardian steals Ghostbuster tech to use for his machine. Doing so, however, breaks an ancient, ghostly contract - allowing hordes of supernatural terrors to invade New York City.
* ''WesternAnimation/{{Recess}}'' had "The Terrifying Tales of Recess", which was similar in structure to "WesternAnimation/TreehouseOfHorror" (but more G-rated), possibly because a good amount of the ''Recess'' staff worked on ''WesternAnimation/TheSimpsons''.
** The TV-movie "Taking The Fifth Grade" had its third segment taking place on Halloween where Spinelli decides she's too old for Halloween traditions and nearly ruins it for her friends.
* ''WesternAnimation/RegularShow'':
** "Terror Tales of the Park", ''à la'' [[TheSimpsons Treehouse of Horror]], consisting of a series of smaller episodes. In true Treehouse of Horror fashion, [[spoiler:none of the episode is canon]]. The first part of the episode is about a Victorian age doll named Percie that Pops had as a child who has a compulsive need to draw on people's faces, which climaxes as the doll comes to life and attempts to kill Mordecai, Rigby and Pops to fulfill his need. The second part features Muscleman and High Five Ghost as they plan to crash an RV into a bottomless pit only to find the late owners, a metal band named Skull Bash, have not left. The third part features Mordecai and Rigby trick-or-treating. Rigby eggs the Halloween Wizard's house and pays for his crime. It is revealed that the entire story was told by [[spoiler: the Halloween Wizard, disguised as Rigby the entire time]].
** The following year had "Terror Tales of the Park II" which had the same format of three separate shorts, but had a framing device to link them all together; in this case, the Park staff are on a journey to a Halloween party and tell the stories to pass the time. Mordecai's story, "Payback", involved Mordecai accidentally killing his Uncle Steve, and Uncle Steve's corpse subsequently haunts Mordecai to settle his UnfinishedBusiness. Margaret's story, "Party Bus", has Mordecai, Rigby, Margaret and Eileen take the "Party Bus" to the movies instead of their late taxi; however, as the party on the bus proceeds and the other guests start to collapse from partying too hard, they realize that [[LifeDrinker this party's]] [[RapidAging a killer]]. The final story, told by Benson, is "Wallpaper Man", an homage to Stephen King's story ''TheLawnmowerMan". Mordecai and Rigby are tasked with applying new wallpaper to the house but they are swayed by a television offer from Jan the Wallpaper Man, who will wallpaper an entire house for free. However, Jan's sinister red-and-black wallpaper turns the house's interior into a claustrophobic maze, with the other park employees trapped in the center. Mordecai and Rigby must rescue their co-workers and confront Jan, who has a dark agenda and a [[BigCreepyCrawlies monstrous secret...]]
* ''WesternAnimation/RockosModernLife'' had "Sugar Frosted Frights", in which Filbert went trick or treating for the first time and met the Hopping Hessian (a parody of the HeadlessHorseman). It was paired with "Ed is Dead", an episode where Rocko does a RearWindowInvestigation when he suspects Bev Bighead has murdered her husband Ed.
* ''WesternAnimation/{{Rugrats}}'' had "Candy Bar Creep Show", where the babies tried to get [[BrandX Reptar Bars]], and "Curse of the Were-Wuff", where Angelica scares them into thinking they will [[BecomingTheCostume become their costumes]] after Halloween.
* In ''WesternAnimation/SabrinaTheAnimatedSeries'' there was a similar plot to the live action's season 2 episode, with Sabrina and Gem competing to have better Halloween parties and Sabrina ends up summoning real ghouls from the Netherworld to help her out.
* ''WesternAnimation/ScaredySquirrel'' make fun of the holiday and called it Halloweekend, making it a ParodyEpisode. Scaredy proves to a CampGay bird (that is, his boss) that he can scare people. But his boss' mom yelled at Scaredy.
* ''Franchise/ScoobyDoo'':
** The original show has had at least two episodes specifically set during Halloween: "The Headless Horseman of Halloween" and "A Halloween Hassle at Dracula's Castle".
** The Day of Dead is used as the reason for Mystery Inc. to visit Mexico in the direct-to-DVD movie ''Scooby-Doo and the Monster of Mexico''.
** Halloween is the day used for ''WesternAnimation/ScoobyDooAndTheGoblinKing''.
** ''WesternAnimation/WhatsNewScoobyDoo'' used the Halloween episode straight.
** ''WesternAnimation/APupNamedScoobyDoo'' has "Ghost Who's Coming To Dinner" In it, the gang meets an a real-life ghost on Halloween night and help him clear his name when a fake ghost attempts to scare everyone away.
* ''WesternAnimation/TheSimpsons''' annual "WesternAnimation/TreehouseOfHorror" episodes, which are anthologies containing [[ThreeShorts three short stories]] with a horror theme (PlayedForLaughs, of course, and non-canonical to the show's universe). Oddly enough, in later seasons most of these have premiered ''after'' Halloween, due to {{Fox}}'s World Series coverage pre-empting its Sunday prime time lineup at the end of October each year. Season 27 had ''two'' Halloween Episodes, the usual "Treehouse of Horror" and "Halloween of Horror", a canon episode that takes place in Springfield on Halloween.
* "WesternAnimation/TheSmurfs Halloween Special" was really a regular Saturday-morning cartoon episode, and it was mostly about celebrating Jokey's birthday, though one of the subplots is that Hogatha the witch wants to celebrate Halloween by scaring little children, only for her holiday to be ruined by one of Gargamel's spells. There's also "Monster Smurfs", where the Smurfs celebrated a similar holiday called Spook-A-Smurf Eve.
** ''WesternAnimation/TheSmurfsTheLegendOfSmurfyHollow'' is this for ''Film/TheSmurfs'' film series.
* There have been a few in ''WesternAnimation/SouthPark''. The first, called "Pinkeye", is about Kenny becoming infected with a zombie virus and turning most of the townspeople into zombies; the second one is "Spookyfish", involving Stan receiving a killer goldfish from his aunt and meanwhile alternate universe versions of the boys show up; the third is "Korn's Groovy Pirate Ghost Mystery", which involves the rock band Music/{{Korn}} solving a mystery involving pirate ghosts in an AffectionateParody of ''Scooby-Doo''; the fourth is "Hell on Earth 2006", involving Satan throwing a Halloween party; and the most recent one is "A Nightmare on [=FaceTime=]", in which Randy purchases an abandoned Blockbuster Video and [[Film/TheShining begins acting like Jack Torrance]], while Stan's attempt to use [=FaceTime=] results in his friends [[ItMakesSenseInContext being endangered by a group of killers]].
* ''WesternAnimation/SpaceGoofs'': A Dracula-like vampire is the new guest at the house. He bites Gorgious as revenge for taking a red can, turning him into a vampire. vampire!Gorgious then later bites the aliens on their sleep, thus turning them all into vampires. In the end, he makes the vampire a cake for his birthday with garlic in it, which turns him into a human (as opposed to killing him). He opens a window to see the sun for the first time...and all of the aliens turn into ash.
* ''WesternAnimation/TheSpectacularSpiderMan'' has one of the most plot important episodes as a Halloween episode. It involves plot advancement on who the Green Goblin is, and it is actually the set up for another episode when [[SecretIdentity Peter]] [[ForHalloweenIAmGoingAsMyself arrives in his Spidey suit]].
* ''WesternAnimation/SpongebobSquarepants'' has "Scaredy Pants" and "I Was a Teenage Gary" (aired on October 28, 1999) and "Ghoul Fools" (from season 8).
* ''WesternAnimation/StarVsTheForcesOfEvil'': In "Hungry Larry", Marco's dad is bummed because no one finds his haunted house scary, so Star tries summoning a real monster named Hungry Larry to haunt the Diaz house and scare trick-or-treaters. [[GoneHorriblyRight It works all too well]] when [[spoiler: the kids, Janna, Marco, Mrs. Diaz, and even Star are SwallowedWhole by Hungry Larry and Mr. Diaz has to save them.]]
* In ''WesternAnimation/StevenUniverse'': While Halloween doesn't exist, "[[Recap/StevenUniverseS1E41HorrorClub Horror Club]]" has all the elements of a typical Halloween episode. Fall, blowing leaves, cooler weather, scarecrows, costumes, flashlight under the chin, and a haunted lighthouse. WordOfGod has also confirmed that it's a Halloween special.
* The ''WesternAnimation/TeenTitans'' episode "Fear Itself" could be considered a Halloween episode, even though the gang didn't do anything Halloween-related besides watch a scary movie.
* The second ''WesternAnimation/{{Teenage Mutant Ninja Turtles|2003}}'' 'toon had "All Hallows' Thieves", an adaptation of a comic book story of the same name, which featured baddie the King of Thieves and his attempts to use an army of goblins in order to have them steal a bunch of stuff for him.
* In "Every Poe Has A Silver Lining", a ''WesternAnimation/TimeSquad'' episode, the squad visits Edgar Allan Poe the day before Halloween and attempt to fix him of his TastesLikeDiabetes attitude. When Poe finally becomes the moody, dark-hearted writer the world knows him to be he walks outside to a rainy Halloween night and scares some trick-or-treaters.
* ''WesternAnimation/TinyToonAdventures'': "Tiny Toons' Night Ghoulery": A parody of ''Creator/RodSerling's Series/NightGallery'' with Babs Bunny in the Serling role. One story is a parody of ''Frankenstein'' with Elmyra as Doctor Frankenstein, Dizzy as Igor, and the Gossamer as Frankenstein's Monster. Another is a parody of Creator/StephenKing's ''Literature/PetSematary'' with Elmyra's dead pets coming back from the grave as zombies. Another is a parody of ''Film/AbbottAndCostelloMeetFrankenstein'', with Buster Bunny and Plucky Duck as the titular duo, respectively. The final story is a parody of ''Series/TheTwilightZone'' episode "Nightmare at 20,000 Feet", with Plucky as the Creator/WilliamShatner character and the gremlin from the ''WesternAnimation/LooneyTunes'' short ''Falling Hare'' as the monster (it also, to some extent, spoofs the final segment of ''Film/TwilightZoneTheMovie'').
* ''WesternAnimation/TransformersAnimated'' had one, "Along Came a Spider", in which Bumblebee, Bulkhead and Sari go trick-or-treating, dressed up as Dracula, a ghost (with a costume made out of a striped fumigation tent, so he looks more like a walking billowing circus), and Optimus Prime, respectively. [[spoiler:Also, Blackarachnia appears to confront Optimus about their past.]]
* ''WesternAnimation/TUFFPuppy'': Happy Howl-O-Ween episode has the villains stealing Halloween candy, and Keswick creating an army of zombies who are craving for candy.
* ''WesternAnimation/TheTwistedTalesOfFelixTheCat'': Felix is persuaded to join the Black Cat Society, a secret society for people dressing and acting as black cats. He runs away when they try to take off Felix's mask (i.e., his face). When they discover that he is an actual black cat, they name him their king.
* ''WesternAnimation/TheVentureBros'' has the "A Very Venture Halloween" special. Interesting in that it is a SynchronousEpisodes with the Season 5 premiere "What Color is Your Cleansuit?", taking place entirely with the first "commercial break" of that episode. It also contains one of the biggest plot revelations in the series so far despite being a "special" episode, namely that [[spoiler: Dean finds out that he and Hank are clones]].
* ''WesternAnimation/TheWeekenders'' has Tino's friends refuse to go trick-or-treating with him so he comes up with an elaborate prank to scare them on Halloween anyway.
* "Trick or Treat" from ''WesternAnimation/WhereOnEarthIsCarmenSandiego'': After Zack and Ivy attempt another trick on Franchise/CarmenSandiego, she pays them for their second trick attempt at arresting her.
* ''WesternAnimation/TheWildThornberrys'' had a Day of the Dead episode in 2000.
* ''WesternAnimation/WinxClub'' had an Season-2 episode where the girls went to a party in their transformed fairy outfits.
* ''WesternAnimation/{{WITCH}}'' had "W is for Witch", in which the girls were able to [[ForHalloweenIAmGoingAsMyself get away using their Guardian identities in public]] in order to capture Nerissa. However, thanks to the series' serial storyline, when Toon Disney [[ExecutiveMeddling elected to air this during a Halloween-themed marathon]], it was shown ''earlier'' than it was supposed to be, effectively spoiling viewers to a number of future plot points.
* ''The WesternAnimation/WoodyWoodpecker Show'' got a Halloween Special called "Spook-A-Nanny". It's included as an extra on the first ''Woody Woodpecker and Friends'' DVD collection, and [[SoBadItsGood worth watching for its cheese factor.]] Oh, and ghosts wearing Beatle wigs. No, really.
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* The 1992 ''WesternAnimation/TheAddamsFamily'' animated series had a Halloween episode called "Puttergeist", which had Wednesday and Pugsley investigate the legend of a golfer ghost known as the Puttergeist.
* ''WesternAnimation/AdventureTime'':
** An episode parodies ''TabletopGame/{{Clue}}'' and ''Literature/AndThenThereWereNone'' in the episode "The Creeps". Members of the cast are assembled at a [[HauntedCastle mountain-top castle]]. Each of the characters gains an alias as part of the invitation. The costume party goes awry as characters are killed off and the party turns into a mystery when it is revealed that a ghost has possessed one of them and intends to murder them. [[spoiler:Jake and Lady Rainicorn reveal that they are the ghost and that none of the character were killed. Finn asks how Jake got the house to come to life. [[SequelHook Jake doesn't know what Finn is talking about and the crew leaves the castle.]] Finn keeps the memory in "his vault". The ghost that appears becomes a ''very'' important ChekhovsGunman later.]]
** A second Halloween special, "From Bad to Worse", aired a week later. The episode deals with a ZombieApocalypse and is a continuation of the premiere "Slumber Party Panic". Finn, Jake, Rainicorn and LSP are seen running through the Candy Kingdom avoiding the now zombified denizens. After making it to the castle, Princess Bubblegum explains the infection is her and Cinnamon Bun's fault. Princess Bubblegum says she will make the antidote again but before she can, she is bitten by a zombie. Before being changed, she tells Finn to [[YouWillKnowWhatToDo let science do the work]] to create the formula again. It is up to the four to create the formula. In an EurekaMoment, Finn realizes that PB's last words meant for them to use [[spoiler:Science, the lab rat. [[AmplifiedAnimalAptitude The lab rat creates the formula]] and Finn tests in on Jake who returns to normal. Unfortunately, the effects are reversed after Jake is bitten again. Out of ideas, Finn covers himself in the antidote and [[HeroicSacrifice flings himself into the fray]] and is chewed by the zombies]]. The last scene shows the Candy Kingdom [[spoiler: fully cured, [[UnexplainedRecovery Finn in a state of well-being]] and Princess Bubblegum awarding Science with a medal for heroic bravery]].
* ''WesternAnimation/TheAdventuresOfJimmyNeutron'' takes great pleasure in pushing this trope to its stereotypical limit. In the episode, Jimmy creates a monster wheel designed to turn his friends into authentic monsters (a closer examination of the wheel shows Michael Jackson as an option) - the only problem is, the invention works a little too well, and Carl and Sheen end up as a real vampire and a real werewolf. They bite Cindy and Libby, who then join the ranks of bloodsuckers/flesheaters, and before you know it the whole town is out for a good ol' fashioned monster-mob.
* ''WesternAnimation/AllGrownUp'''s Halloween Episode had Chuckie freaking out over the possibility that Tommy might have a crush on Kimi and so running off on his own on Halloween when there's dangerous teenage gangs about.
** The show also had two other horror-themed episodes that would have fit this trope, only they weren't set on Halloween. "Curse of Reptar" was an AffectionateParody of ''Poltergeist'' and "Interview With a Campfire" had the kids get lost in a colonial mine that was said to be haunted.
* ''WesternAnimation/TheAmazingWorldOfGumball'' has the episode simply titled ''"Halloween"''. Carrie the ghost helps get Gumball and Darwin into a ghosts-only Halloween party using ghost potion. However, an overdose of the potion turns Gumball and Darwin completely into ghosts, triggering a CosmicDeadline to get them back into their bodies or else they'll be dragged into the underworld. To make matters worse, [[spoiler:Anais also drinks the potion and Gumball must save her as well]].
* ''WesternAnimation/AmericanDad'' did one of these where Stan tried to outdo his neighbor's haunted house. His solution? Bring in caged serial killers. [[spoiler:And then Roger frees them...]]
* ''WesternAnimation/AmericanDragonJakeLong'' version had Jake throwing a party for both monsters and humans. Of course, he almost brings danger down on their heads in the form of the Huntsclan.
* ''WesternAnimation/AquaTeenHungerForce'' episode "The Shaving" takes place on Halloween. Shake tries to teach a monster named Willie Nelson the way of scaring someone, by the end it seems Willie can't scare anyone. [[NotSoHarmless Then the trio looks in the attic.]]
* ''WesternAnimation/{{Arthur}}'' has the episode "Hic or Treat" which is set on Halloween and involves a plot of DW having a case of hiccups she can't get rid of until Arthur scares her. While it isn't strictly set on Halloween, "The Fright Stuff" involves a costume party, and a ghost character.
* ''WesternAnimation/AvatarTheLastAirbender'''s "The Puppetmaster" was aired (and possibly meant) as a Halloween episode, since the holiday doesn't exist in their universe.
* ''WesternAnimation/TheBackyardigans'' episode "Scared Of You" is this in all but name.
* The ''WesternAnimation/{{Ben 10}}'' episode ''Last Laugh'' is considered a Halloween episode, despite the fact that the series is supposed to take place during the summer.
* The ''WesternAnimation/{{Beetlejuice}}'' cartoon's Halloween episode, "Laugh Of The Party," had B.J. livening up Lydia's Halloween party with Party People In A Can. They're all Neitherworld denizens, so the party was rather unorthodox, even for Halloween. A year later, the episode "Bewitched, Bothered and Beetlejuiced" had Lydia dressed as a witch for Halloween, only for her cat Percy to get catnapped by a soiree of witches.
* The PBS adaptation of ''Literature/BerenstainBears'' has an episode called Trick or Treat.
* ''WesternAnimation/BobsBurgers'' - one episode has the kids trick-or-treating without the parents for the first time. They take the ferry to the greener pastures of the island where the rich families live. Another episode has them miss Halloween altogether when they get stuck in their alleyway cardboard box fort at the mercy of a creepy classmate of Louise's. Still another has Tina falling for a ghost discovered in the Belchers' basement.
* The ''WesternAnimation/{{CatDog}}'' episode "[=CatDogula=]" had Dog get bitten by Peruvian vampire ticks, so Cat tries desperately to find a cure. In the process, their friends are also bitten by the vampire ticks and turned into vampires. At the end, Cat drowns everyone in garlic juice, which cures everyone (even the Peruvian ticks). At the end, Winslow shows up, and reveals that he was bitten by a werewolf.
* ''WesternAnimation/TheCatInTheHatKnowsALotAboutThat'' has ''The Cat in the Hat Knows a Lot About Halloween'', a nearly hour-long special featuring the group journeying so that Sally and Nick can find the perfect Halloween costumes.
* ''WesternAnimation/CelebrityDeathmatch'' had two Halloween episodes with matches such as FrankensteinsMonster vs. the WolfMan, Wrestling/TheUndertaker vs. Captain Doody (a demon possessing Nicky Jr.), and Creator/SarahMichelleGellar vs. a vampire.
* ''WesternAnimation/ClassOfTheTitans'' had a Halloween episode in which Hecate, the goddess of witchcraft, tried to escape from her prison in the moon. It also introduced Theresa's mystical powers.
* ''WesternAnimation/TheClevelandShow'':
** "It's the Great Pancake, Cleveland Brown", where Cleveland upsets Cleveland Jr. by telling him he is too old to trick or treat and Rallo eats too much candy.
** Another episode, "Nightmare on Grace Street", had a look-a-like friend that was annoying everyone with bad jokes the whole episode, then [[spoiler:went Ax Crazy and tried to kill both Cleveland and his entire family.]] Cleveland and Rallo spent the episode trying to prove they weren't scared.
* The PBS animated adaptation of ''Literature/CliffordTheBigRedDog'' has the episode "Boo!" all about Jetta bragging about how brave she is. After the whole town is spooked by a ghost movie, Jetta learns that everyone has fears but it is OK.
* On ''WesternAnimation/CreativeGalaxy'', "Arty's Boo-tastic Halloween" is a double story-length special in which Arty goes out trick-or-treating in the Creative Galaxy with his friends, visits a number of planets, and helps out along the way.
* The TV series adaptation of ''Literature/CuriousGeorge'' has the one-hour special ''A Halloween Boo Fest'' involving George trying to create the perfect Halloween costume and learning the story of the haunted scarecrow named No-Noggin.
* ''WesternAnimation/DangerMouse'' had "The Good, the Bad and the Motionless", which took place on Halloween, as DM tells Colonel K that Penfold is carving up a swede.
-->'''Colonel K:''' Good heavens, DM. I didn't know he could play tennis!
-->'''D.M.:''' Tennis? Oh, no. Not Bjørn Borg, sir. Not that sort of swede. It's the vegetable kind.
* ''WesternAnimation/DannyPhantom'' had "Fright Night" where Danny temporarily steals a sword from Fright Knight, the [[AnthropomorphicPersonification ghostly Anthropomorphic Personification of Halloween]]. Hell ensues (literally).
* WesternAnimation/DonaldDuck starred in a bunch of shorts with a semi-scary atmosphere, such as "Donald Duck and the Gorilla", "Donald's Lucky Day", and "Duck Pimples", but the true Halloween episode is fans' favorite "Trick or Treat", where Donald's [[JerkAss assholish]] treatment of his nephews leads to a witch helping the boys to get the best of their uncle.
* ''WesternAnimation/{{Doug}}'' had two that come to mind. One (during the Nickelodeon run) a half hour special that had Doug going to the amusement park Funky Town to ride a scary ride and end up getting locked in it after the park shuts down for the night. Another (Disney run this time) had him (and eventually the other kids) thinking his best friend Skeeter was a vampire.
* ''WesternAnimation/EdEddNEddy's Boo-Haw-Haw'' had the Eds attempt to follow a map to "Spookyville", the ultimate trick-or-treating neighborhood. Unfortunately, an overdose of B-movies on [[CloudCuckoolander Ed's]] part causes him to hallucinate that the other kids of the cul-de-sac are movie monsters out to get him and his friends, and HilarityEnsues.
* ''WesternAnimation/ElTigre'' episode "The Grave Escape"; Taking place on ''Dia De Los Muertos'', Manny feels he's getting too old for the holiday (Despite his father and Grandpapi being all for it) when Sartana of the Dead attacks with a monster formed from Miracle City's unremembered dead("Sartana of the Dead!?" Cries Rodolpho, "Attacking on the Day of the Dead!? Actually, that makes sense."). Manny and Frida end up getting sent down to the Land of the Dead, where they recruit Riveras from the past to get back to the surface in order to defeat Sartana, including the original [[LegacyCharacter El Tigre]], which does prove that (For Manny) indecision ''does'' run in the family.
* On ''WesternAnimation/EllaTheElephant'', "Frankie's Perfect Pumpkin" has the kids in costumes and trick-or-treating, though most of the story is actually spent on hunting for Frankie's lost pumpkin.
* ''WesternAnimation/TheFairlyOddparents'': Remember the ''Buffy'' Halloween episode where [[BecomingTheCostume everyone became the costumes they were wearing]]? Same plot, only with the Yugopotamians and four OmnicidalManiac robots thrown in for variety.
* ''WesternAnimation/FamilyGuy'' only has one ("Halloween On Spooner Street"), oddly. It was from season 9, where Chris and Meg went to a party, Stewie and Brian dealt with a bully that stole Stewie's candy and Quagmire getting revenge for a prank by Peter and Joe. [[spoiler:Lois becomes the bully for the bullies and actually scares Stewie a bit, Quagmire pretends to be possessed by a Japanese UsefulNotes/WorldWarII pilot, and ''[[SurpriseIncest Meg and Chris accidentally make out with each other]]''.]]
* ''WesternAnimation/{{Futurama}}'''s Season 2 episode "The Honking", a parody of werewolf movies where after spending a night at his late uncle's haunted castle, Bender is transformed into a werecar that runs over people every night. Season 6's "Ghost in the Machines" and Season 7's "Murder on the Planet Express" could also be considered as examples. The former sees Bender become a robot ghost and begin to haunt Fry by possessing machinery while the latter is a parody of ''Film/TheThing1982'' and ''Film/{{Alien}}''.
* ''[[WesternAnimation/GarfieldSpecials Garfield's Halloween Adventure]]'' has the titular cat and Odie trick-or-treating. But when attempting to cross a river on a boat for extra candy, the two end up in a haunted mansion. Also features [[http://www.youtube.com/watch?v=BiIJw6dIAwQ really]] [[EarWorm catchy songs]].
* ''WesternAnimation/{{Gargoyles}}'' had "Eye of the Beholder", in which Goliath and Elisa are forced to team up with Xanatos to save the life of Xanatos' fiancee Fox after a cursed artifact turns her into a monster. We also get to see Goliath, Elisa, and the other Manhattan Clan gargoyles attend a Halloween party where Elisa goes dressed as [[Disney/BeautyAndTheBeast Belle]].
* The fact that ''WesternAnimation/GravityFalls'' takes place over a single summer doesn't stop it from having a HalloweenEpisode. "Summerween" explores [[YouMeanXmas Summerween]], a second Halloween in the summer because Gravity Falls loves the holiday that much. Soos tells the legend of the Summerween Trickster, a phantom who kills those who do not accept the holiday. Dipper, wanting to attend a party instead of trick-or-treat, attracts the Trickster who holds the lives of he and his friends in the balance in exchange for five hundred pieces of candy. [[NightmareFuel/GravityFalls Knock knock, indeed]].
* ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'' has the hour-long special ''[[PoorlyDisguisedPilot Underfist: Halloween Bash]]'', which was going to be a SpinOff (until Creator/CartoonNetwork decided not to make the series). It involves Halloween candy taking over the world and Irwin's vampire-mummy powers finally forming. General fan consensus is that it was amazing.
** Previously there was also "Billy and Mandy's Jacked Up Halloween".
* Despite being predated by 4 months in the US and one month in Canada, the ''WesternAnimation/{{Grojband}}'' episode "Dance of the Dead" takes place during Halloween night.
* Creator/HannaBarbera's version of ''WesternAnimation/TheLittleRascals'' had one: "Fright Night", in which three of the Rascals went trick-or-treating. I don't recall all of the details, but I do remember that Darla [[WholesomeCrossdresser dressed so as to resemble Alfalfa]].
** Four other episodes were similarly themed, though not specifically set on Halloween: "Rascals' Revenge", in which Butch and Woim dare the Rascals to enter an abandoned house; "Grin and Bear It", in which the Rascals' camping trip is disrupted when the Phantom Lumberjack abducts Porky; "Falling Heir", in which Spanky inherits a supposedly haunted castle, and "Wash and Werewolf", in which the boys watch a 3D horror movie and Alfalfa later thinks he's become a werewolf.
* ''WesternAnimation/HarveyBeaks'': The first season had a TwoShorts-styled one, in which the first segment sees Harvey and his friends visit a corn maze that proves much scarier than it seems, while the second was about the cast telling pass-around scary story. In the second season, it was a half-hour episode parodying [[YetAnotherChristmasCarol A Christmas Carol]]. Both episodes also feature a goblin-like creature named the Blargus, who is Littlebark Grove's spirit of Halloween (he only appears in the first season episode's second segment though).
* ''WesternAnimation/HeyArnold'''s Halloween episode was a homage to Creator/OrsonWelles' 1938 "Radio/TheWarOfTheWorlds" radio broadcast.
* On ''WesternAnimation/HomeMovies'' the gang was on their way to a Halloween party but they all ended up at the hospital when Brendon's stepmom went into labor and Coach [=McGuirk=] had a heart attack. Not the best place for Melissa to dress like the Grim Reaper.
-->'''Coach:''' Omigod, it's Death.
-->'''Melissa:''' Coach, it's me, Melissa!
-->'''Coach:''' Omigod, it's Melissa.
* ''WesternAnimation/HouseOfMouse'':
** ''[[WesternAnimation/MickeysHouseOfVillains Mickey's House of Villains]]'' could be considered a Halloween episode. There, the Disney animated villains kick all of the good guys out of the House and rename it the House of Villains. Jafar gets Mickey's job as the master of ceremonies, while Captain Hook and Hades get Donald and Goofy's jobs as chief assistants. The rest is your usual HOM stuff, with showing scary shorts instead of the usual upbeat ones.
** Other examples include the episodes "Halloween with Hades" and "House Ghosts".
* There's one in ''WesternAnimation/InvaderZim'' called the Halloween Spectacular of Spooky Doom, in which inside Dib's head is a parallel universe with real monsters.
* The sixth episode of ''WesternAnimation/JackieChanAdventures''' fourth season, "Fright Fight Night" is set on Halloween, dealing with Paco being possessed by one of the [[PlotCoupons Oni masks]] and the heroes having to get it off before [[BigBad Tarakudo]] is able to corrupt him.
* ''WesternAnimation/{{Jem}}'' had a Halloween episode, "Trick or Techrat", having the Holograms fixing a haunted opera house--and Terri, one of the Starlight Girls, learning not to scare at every thing.
* ''WesternAnimation/JohnnyTest'':
** The episode titled "Johnny Trick or Treat". Johnny accepts a dare by a mysterious card impaled on his door. In order to see a real haunted house and cash in on a large amount of candy, he must spend a night in a house and wear a tutu. He is joined by Dukey and Jillian, only to find the house is rigged with traps. They successfully complete all of the tasks, only to be eaten by a giant maggot. With Jillian in danger, [[spoiler: the master of the house, Darth Vegan, tries to save them, only to have his plans ruined. When it is revealed that there was no candy]], Johnny and the rest of the crew teleport to a party attended by Susan, Mary and Agents Black and White, where he [[spoiler: wins a candy making machine for first place in a costume contest]].
** The second episode called "The Johnny Who Saved Halloween". Johnny and several other kids are in a contest to collect the most candy in order to win a literal mountain of candy.
* ''WesternAnimation/JuliusJr'' has the season 1 episode ''Dressed for Spook-cess'', where Worry Bear and Ping muct co-operate to match their costumes before they go trick-or-treating.
* ''WesternAnimation/{{Kaeloo}}'': The episode "Let's Play Scaredy Cat", where [[TheDitz Stumpy]] raises the dead and causes a zombie apocalypse, forcing Mr. Cat to fight off all the zombies [[spoiler: by himself after Kaeloo and Quack Quack also get turned into zombies.]]
* ''WesternAnimation/KickButtowski'' had the [[IdiosyncraticEpisodeNaming predictably named]] "Kick Or Treat", where Kick accepts a challenge from Kendall to go trick-treating at the scary OldDarkHouse across the street. Turns out the house is [[spoiler: owned by a nice old lady who loves Halloween so much that she went completely overboard with the special effects.]]
* The ''WesternAnimation/KimPossible'' episode "October 31st".
* There have been a couple in ''WesternAnimation/KingOfTheHill''. The first one concerns a religious fanatic trying to ban Halloween from Arlen. In the second (definitely one of the series' darker episodes), Luann moves in with a schizophrenic millionaire who owns a pork processing company.
* ''WesternAnimation/TheLifeAndTimesOfJuniperLee'' one had the title character trying to fix a spell that turned monsters into humans (which their idea of a Halloween costume) and having to go through a complicated barter system which at the end involve her having to wrestle (as in WWE-like wrestle) a monster to help get the last thing she needs.
* ''WesternAnimation/LiloAndStitchTheSeries'' has the episode "Spooky", featuring an experiment that can [[YourWorstNightmare transform into their worst fears.]]
* Interestingly, ''WesternAnimation/LittleBear'' has an episode that appears to take place on Halloween, but nobody refers to it as such. Instead, the holiday is known as "Goblin Night", when goblins are said to play tricks on people. In the episode, Little Bear and his friends dress up (Mitzi is even wearing a goblin costume), try to scare each other and eat corn and pumpkin seeds in front of a campfire.
* The short-lived ''WesternAnimation/LloydInSpace'' had an episode in which the gang goes into a HauntedHouse type thing, only to come out to a version of the space station in the far future where it's completely deserted and a monster has apparently killed everyone. It turns out to be some variation of AllJustADream, but man, that whole episode was basically MoodWhiplash.
* ''WesternAnimation/LooneyTunes'' released at least two Halloween specials, titled "Bugs Bunny's Halloween Hijinks", and "Bugs Bunny's Howl-Oween Special".
* The ''WesternAnimation/LooneyTunes'' short:
** "Broomstick Bunny" has Witch Hazel concerned about her appearance, wanting to stay the ugliest witch of all ("I'm so afraid of growing pretty as I get older!") then encounters WesternAnimation/BugsBunny, trick-or-treating in an ugly witch costume.
** "A-Haunting We Will Go" has WesternAnimation/DaffyDuck's nephew encountering Witch Hazel while trick-or-treating in the exact same costume Bugs used. (The rest of the cartoon has Daffy dealing with WesternAnimation/SpeedyGonzales, who Witch Hazel has turned into her exact double so he can fill in for her while she takes a vacation.)
** "Corn on the Cop" is also set on Halloween, and has Daffy and [[WesternAnimation/PorkyPig Porky]] as police officers trying to apprehend a bank robber who looks just like Granny.
* ''WesternAnimation/TheLoudHouse'' has the episode "The Price of Admission" all about a scary movie and Lincoln's bad nightmares induced from watching it against his parents' wishes.
* ''WesternAnimation/{{MAD}}'' had the episode "Kitchen Nightmares Before Christmas/How I Met Your Mummy". Within the episode were ''WesternAnimation/TheNightmareBeforeChristmas'' and ''Series/HowIMetYourMother'' references, as the title implies. Other references included [[Franchise/{{Scream}} ScreamX20]], [[ScoobyDoo Scooby Doo: Ruining Halloween Since 1969]], and ''WesternAnimation/VeggieTales [[Series/TalesFromTheCrypt from the Crypt]]''.
* The 2000 series of ''Literature/{{Madeline}}'' called the New Adventures of Madeline had a Halloween episode where the girls visit America and learn about Halloween, with a subplot of a mysterious lost earring.
* ''WesternAnimation/TheMagicSchoolBus'' had a Halloween special that was two spookily themed episodes from the series tied together by a live-action sequence where an old caretaker told two kids terrifying stories about [[spoiler:kids learning about sound and bats.]]
* Disney XD's WesternAnimation/MarvelUniverse block has had several, usually involving Doctor Strange, Blade, and/or Dormammu showing up.
** ''WesternAnimation/UltimateSpiderMan'' had three: the first was a one-hour special that premiered on the Disney Channel rather than Disney XD and sees Spider-Man team up with Blade and several other Marvel Monsters (named the "Howling Commandos") to stop Dracula after he puts Spidey's team under mind control and has them recover an artifact that would make him invulnerable to sunlight. The second is a crossover with ''Series/{{Jessie}}'' where Spidey and Jessie Prescott are stuck in a museum on Halloween night while the latter accidentally resurrects Morrigane Le Fey. The third has Spidey, Doctor Strange, and Scott Lang team against Baron Mordo when he casts a spell to make all the trick-or-treaters [[BecomingTheCostume become what they're dressed up as]] to feed off the negative energy from the spell and make himself stronger.
** ''WesternAnimation/HulkAndTheAgentsOfSMASH'' also had a Halloween team-up with the Howling Commandos, where the two groups must put aside their differences to prevent Dormammu from enslaving all of humanity.
** ''WesternAnimation/AvengersAssemble'' had its episode featured Hulk, Iron Man, and Thor work with Strange to recover the Eye of Agamotto when its stolen by Dormammu.
* ''WesternAnimation/TheMask'': Skillit uses his powers to summon a zombie cowboy, a ghost knight, and a demonically-possesed warlock to crash the Coco Bongo's annual Halloween party. In the end, the Mask vanishes them to Skillit's home dimension by making them say the word "mask" backwards.
* ''WesternAnimation/MaxAndRuby'' has at least ''three'' Halloween Episodes.
* ''WesternAnimation/TheMightyB'' has Bessie trapped in a cat costume and...[[BizarroEpisode stuff happens]].
* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'':
** There's "[[Recap/MyLittlePonyFriendshipIsMagicS2E4LunaEclipsed Luna Eclipsed]]" where the ponies celebrate the day as [[YouMeanXMas "Nightmare Night"]] and a certain literal [[EnsembleDarkhorse/MyLittlePonyFriendshipIsMagic Ensemble Darkhorse]] shows up, being determined to change her frightening public image she made [[Recap/MyLittlePonyFriendshipIsMagicS1E1MareInTheMoon back in]] [[Recap/MyLittlePonyFriendshipIsMagicS1E2ElementsOfHarmony the past]]. At first, it wasn't really working out all that well for Princess Luna, [[spoiler: and it goes to the point where she ends up decreeing the cancellation of Nightmare Night forever]]! However, [[spoiler: Luna eventually learns that the young ponies actually ''like'' being scared by her, and she declares that Nightmare Night's back on]].
** The Season 5 episode, [[Recap/MyLittlePonyFriendshipIsMagicS5E21ScareMaster "Scare Master"]], Fluttershy steps out of her cottage on Nightmare Night and tries to celebrate the holiday with the other Mane Five. It's very awkward at first, until she manages to pull off the scare of a lifetime on them, which is where we learn why Fluttershy doesn't traditionally celebrate Nightmare Night, she hates seeing her friends scared and frightened, even if it is just for laughs.
* ''WesternAnimation/OverTheGardenWall'' is an odd example, because depending on how you look at it, either [[Recap/OverTheGardenWallChapter9IntoTheUnknown the ninth episode]] or [[spoiler:the whole miniseries]] takes place on Halloween, due to [[spoiler:[[YearInsideHourOutside no time passing in our world]] while Wirt and Greg are in the Unknown]].
* The ''WesternAnimation/PacMan'' cartoon also had two Halloween episodes: "Pacula" and "Trick or Chomp".
* ''WesternAnimation/PepperAnn'' had Pepper Ann and Milo get ready for trick-or-treating, only for Pepper Ann to consider the two of them too old after all of their classmates tell her that they don't plan to trick-or-treat. [[spoiler:Pepper Ann and Milo go despite this, and an ending montage reveals that their classmates secretly joined in.]]
* ''WesternAnimation/PhineasAndFerb'' has a few.
** While not taking place during Halloween, "One Good Scare Ought to Do It" and "The Monster of Phineas-n-Ferbenstein" aired in October for Season 1.
** "That's the Spirit" and "The Curse of Candace" aired together, but only the first one is specifically Halloween themed. The second one has Candace thinking she's a vampire.
** Season 4 has "Drusselsteinoween" and "[[FaceYourFears Face Your Fear]]", the first one has Vanessa throwing a Halloween party in the castle her father inherited. The second one was about Doofenshmirtz creating a machine that cause animals to grow bigger and he tested it on a bat [[WhyDidItHaveToBeSnakes which he is afraid of.]] Like before only the first one was on Halloween.
** Another episode is "Terrifying Tri-State Trilogy of Terror", which just like the Simpsons Tree House of Horror series was in a three shorts format. Although the shorts were not Halloween themed, they did air in October.
** "Night of the Living Pharmacists" is another one. It's about Doofenshmirtz creating an inator that turns people into zombie versions of himself.
* ''WesternAnimation/PinkyAndTheBrain'': Pinky sells his soul to the Devil so that Brain can take over the world. [[ChessWithDeath Brain then challenges Satan to a gymnastic competition for Pinky's soul]], and loses. However, when Pinky signed the contract giving his soul to the Devil, the Devil forgot to give him some sort of gizmo (with a really weird name and a vague explanation of its function), thus rendering the contract null and void, and saving Pinky's soul.
* The 2010 version of ''[[WesternAnimation/PoundPuppies2010 Pound Puppies]]'' had "A Nightmare on Pound Street". It wasn't a Halloween Episode in the sense of the "[[WesternAnimation/TheSimpsons Treehouse of Horror]]", but it was set on Halloween, and the hopeful adoptee was a "creepy-looking" puppy named [[Franchise/ANightmareOnElmStreet Freddy]].
* ''WesternAnimation/TheProudFamily'' has "A Hero For Halloween" - as the title suggests, it doubles as a SuperheroEpisode.
* ''WesternAnimation/TheRealGhostbusters'' had three such episodes.
** "When Halloween Was Forever": A pair of ghosts free Samhain, the Spirit of Halloween, whose goal is to create a permanent Halloween night.
** "Halloween 2½": Samhain is freed from the Containment Unit and tries to again achieve his goal, while also seeking revenge against the Ghostbusters.
** "The Halloween Door": Seeking to end Halloween forever, a MoralGuardian steals Ghostbuster tech to use for his machine. Doing so, however, breaks an ancient, ghostly contract - allowing hordes of supernatural terrors to invade New York City.
* ''WesternAnimation/{{Recess}}'' had "The Terrifying Tales of Recess", which was similar in structure to "WesternAnimation/TreehouseOfHorror" (but more G-rated), possibly because a good amount of the ''Recess'' staff worked on ''WesternAnimation/TheSimpsons''.
** The TV-movie "Taking The Fifth Grade" had its third segment taking place on Halloween where Spinelli decides she's too old for Halloween traditions and nearly ruins it for her friends.
* ''WesternAnimation/RegularShow'':
** "Terror Tales of the Park", ''à la'' [[TheSimpsons Treehouse of Horror]], consisting of a series of smaller episodes. In true Treehouse of Horror fashion, [[spoiler:none of the episode is canon]]. The first part of the episode is about a Victorian age doll named Percie that Pops had as a child who has a compulsive need to draw on people's faces, which climaxes as the doll comes to life and attempts to kill Mordecai, Rigby and Pops to fulfill his need. The second part features Muscleman and High Five Ghost as they plan to crash an RV into a bottomless pit only to find the late owners, a metal band named Skull Bash, have not left. The third part features Mordecai and Rigby trick-or-treating. Rigby eggs the Halloween Wizard's house and pays for his crime. It is revealed that the entire story was told by [[spoiler: the Halloween Wizard, disguised as Rigby the entire time]].
** The following year had "Terror Tales of the Park II" which had the same format of three separate shorts, but had a framing device to link them all together; in this case, the Park staff are on a journey to a Halloween party and tell the stories to pass the time. Mordecai's story, "Payback", involved Mordecai accidentally killing his Uncle Steve, and Uncle Steve's corpse subsequently haunts Mordecai to settle his UnfinishedBusiness. Margaret's story, "Party Bus", has Mordecai, Rigby, Margaret and Eileen take the "Party Bus" to the movies instead of their late taxi; however, as the party on the bus proceeds and the other guests start to collapse from partying too hard, they realize that [[LifeDrinker this party's]] [[RapidAging a killer]]. The final story, told by Benson, is "Wallpaper Man", an homage to Stephen King's story ''TheLawnmowerMan". Mordecai and Rigby are tasked with applying new wallpaper to the house but they are swayed by a television offer from Jan the Wallpaper Man, who will wallpaper an entire house for free. However, Jan's sinister red-and-black wallpaper turns the house's interior into a claustrophobic maze, with the other park employees trapped in the center. Mordecai and Rigby must rescue their co-workers and confront Jan, who has a dark agenda and a [[BigCreepyCrawlies monstrous secret...]]
* ''WesternAnimation/RockosModernLife'' had "Sugar Frosted Frights", in which Filbert went trick or treating for the first time and met the Hopping Hessian (a parody of the HeadlessHorseman). It was paired with "Ed is Dead", an episode where Rocko does a RearWindowInvestigation when he suspects Bev Bighead has murdered her husband Ed.
* ''WesternAnimation/{{Rugrats}}'' had "Candy Bar Creep Show", where the babies tried to get [[BrandX Reptar Bars]], and "Curse of the Were-Wuff", where Angelica scares them into thinking they will [[BecomingTheCostume become their costumes]] after Halloween.
* In ''WesternAnimation/SabrinaTheAnimatedSeries'' there was a similar plot to the live action's season 2 episode, with Sabrina and Gem competing to have better Halloween parties and Sabrina ends up summoning real ghouls from the Netherworld to help her out.
* ''WesternAnimation/ScaredySquirrel'' make fun of the holiday and called it Halloweekend, making it a ParodyEpisode. Scaredy proves to a CampGay bird (that is, his boss) that he can scare people. But his boss' mom yelled at Scaredy.
* ''Franchise/ScoobyDoo'':
** The original show has had at least two episodes specifically set during Halloween: "The Headless Horseman of Halloween" and "A Halloween Hassle at Dracula's Castle".
** The Day of Dead is used as the reason for Mystery Inc. to visit Mexico in the direct-to-DVD movie ''Scooby-Doo and the Monster of Mexico''.
** Halloween is the day used for ''WesternAnimation/ScoobyDooAndTheGoblinKing''.
** ''WesternAnimation/WhatsNewScoobyDoo'' used the Halloween episode straight.
** ''WesternAnimation/APupNamedScoobyDoo'' has "Ghost Who's Coming To Dinner" In it, the gang meets an a real-life ghost on Halloween night and help him clear his name when a fake ghost attempts to scare everyone away.
* ''WesternAnimation/TheSimpsons''' annual "WesternAnimation/TreehouseOfHorror" episodes, which are anthologies containing [[ThreeShorts three short stories]] with a horror theme (PlayedForLaughs, of course, and non-canonical to the show's universe). Oddly enough, in later seasons most of these have premiered ''after'' Halloween, due to {{Fox}}'s World Series coverage pre-empting its Sunday prime time lineup at the end of October each year. Season 27 had ''two'' Halloween Episodes, the usual "Treehouse of Horror" and "Halloween of Horror", a canon episode that takes place in Springfield on Halloween.
* "WesternAnimation/TheSmurfs Halloween Special" was really a regular Saturday-morning cartoon episode, and it was mostly about celebrating Jokey's birthday, though one of the subplots is that Hogatha the witch wants to celebrate Halloween by scaring little children, only for her holiday to be ruined by one of Gargamel's spells. There's also "Monster Smurfs", where the Smurfs celebrated a similar holiday called Spook-A-Smurf Eve.
** ''WesternAnimation/TheSmurfsTheLegendOfSmurfyHollow'' is this for ''Film/TheSmurfs'' film series.
* There have been a few in ''WesternAnimation/SouthPark''. The first, called "Pinkeye", is about Kenny becoming infected with a zombie virus and turning most of the townspeople into zombies; the second one is "Spookyfish", involving Stan receiving a killer goldfish from his aunt and meanwhile alternate universe versions of the boys show up; the third is "Korn's Groovy Pirate Ghost Mystery", which involves the rock band Music/{{Korn}} solving a mystery involving pirate ghosts in an AffectionateParody of ''Scooby-Doo''; the fourth is "Hell on Earth 2006", involving Satan throwing a Halloween party; and the most recent one is "A Nightmare on [=FaceTime=]", in which Randy purchases an abandoned Blockbuster Video and [[Film/TheShining begins acting like Jack Torrance]], while Stan's attempt to use [=FaceTime=] results in his friends [[ItMakesSenseInContext being endangered by a group of killers]].
* ''WesternAnimation/SpaceGoofs'': A Dracula-like vampire is the new guest at the house. He bites Gorgious as revenge for taking a red can, turning him into a vampire. vampire!Gorgious then later bites the aliens on their sleep, thus turning them all into vampires. In the end, he makes the vampire a cake for his birthday with garlic in it, which turns him into a human (as opposed to killing him). He opens a window to see the sun for the first time...and all of the aliens turn into ash.
* ''WesternAnimation/TheSpectacularSpiderMan'' has one of the most plot important episodes as a Halloween episode. It involves plot advancement on who the Green Goblin is, and it is actually the set up for another episode when [[SecretIdentity Peter]] [[ForHalloweenIAmGoingAsMyself arrives in his Spidey suit]].
* ''WesternAnimation/SpongebobSquarepants'' has "Scaredy Pants" and "I Was a Teenage Gary" (aired on October 28, 1999) and "Ghoul Fools" (from season 8).
* ''WesternAnimation/StarVsTheForcesOfEvil'': In "Hungry Larry", Marco's dad is bummed because no one finds his haunted house scary, so Star tries summoning a real monster named Hungry Larry to haunt the Diaz house and scare trick-or-treaters. [[GoneHorriblyRight It works all too well]] when [[spoiler: the kids, Janna, Marco, Mrs. Diaz, and even Star are SwallowedWhole by Hungry Larry and Mr. Diaz has to save them.]]
* In ''WesternAnimation/StevenUniverse'': While Halloween doesn't exist, "[[Recap/StevenUniverseS1E41HorrorClub Horror Club]]" has all the elements of a typical Halloween episode. Fall, blowing leaves, cooler weather, scarecrows, costumes, flashlight under the chin, and a haunted lighthouse. WordOfGod has also confirmed that it's a Halloween special.
* The ''WesternAnimation/TeenTitans'' episode "Fear Itself" could be considered a Halloween episode, even though the gang didn't do anything Halloween-related besides watch a scary movie.
* The second ''WesternAnimation/{{Teenage Mutant Ninja Turtles|2003}}'' 'toon had "All Hallows' Thieves", an adaptation of a comic book story of the same name, which featured baddie the King of Thieves and his attempts to use an army of goblins in order to have them steal a bunch of stuff for him.
* In "Every Poe Has A Silver Lining", a ''WesternAnimation/TimeSquad'' episode, the squad visits Edgar Allan Poe the day before Halloween and attempt to fix him of his TastesLikeDiabetes attitude. When Poe finally becomes the moody, dark-hearted writer the world knows him to be he walks outside to a rainy Halloween night and scares some trick-or-treaters.
* ''WesternAnimation/TinyToonAdventures'': "Tiny Toons' Night Ghoulery": A parody of ''Creator/RodSerling's Series/NightGallery'' with Babs Bunny in the Serling role. One story is a parody of ''Frankenstein'' with Elmyra as Doctor Frankenstein, Dizzy as Igor, and the Gossamer as Frankenstein's Monster. Another is a parody of Creator/StephenKing's ''Literature/PetSematary'' with Elmyra's dead pets coming back from the grave as zombies. Another is a parody of ''Film/AbbottAndCostelloMeetFrankenstein'', with Buster Bunny and Plucky Duck as the titular duo, respectively. The final story is a parody of ''Series/TheTwilightZone'' episode "Nightmare at 20,000 Feet", with Plucky as the Creator/WilliamShatner character and the gremlin from the ''WesternAnimation/LooneyTunes'' short ''Falling Hare'' as the monster (it also, to some extent, spoofs the final segment of ''Film/TwilightZoneTheMovie'').
* ''WesternAnimation/TransformersAnimated'' had one, "Along Came a Spider", in which Bumblebee, Bulkhead and Sari go trick-or-treating, dressed up as Dracula, a ghost (with a costume made out of a striped fumigation tent, so he looks more like a walking billowing circus), and Optimus Prime, respectively. [[spoiler:Also, Blackarachnia appears to confront Optimus about their past.]]
* ''WesternAnimation/TUFFPuppy'': Happy Howl-O-Ween episode has the villains stealing Halloween candy, and Keswick creating an army of zombies who are craving for candy.
* ''WesternAnimation/TheTwistedTalesOfFelixTheCat'': Felix is persuaded to join the Black Cat Society, a secret society for people dressing and acting as black cats. He runs away when they try to take off Felix's mask (i.e., his face). When they discover that he is an actual black cat, they name him their king.
* ''WesternAnimation/TheVentureBros'' has the "A Very Venture Halloween" special. Interesting in that it is a SynchronousEpisodes with the Season 5 premiere "What Color is Your Cleansuit?", taking place entirely with the first "commercial break" of that episode. It also contains one of the biggest plot revelations in the series so far despite being a "special" episode, namely that [[spoiler: Dean finds out that he and Hank are clones]].
* ''WesternAnimation/TheWeekenders'' has Tino's friends refuse to go trick-or-treating with him so he comes up with an elaborate prank to scare them on Halloween anyway.
* "Trick or Treat" from ''WesternAnimation/WhereOnEarthIsCarmenSandiego'': After Zack and Ivy attempt another trick on Franchise/CarmenSandiego, she pays them for their second trick attempt at arresting her.
* ''WesternAnimation/TheWildThornberrys'' had a Day of the Dead episode in 2000.
* ''WesternAnimation/WinxClub'' had an Season-2 episode where the girls went to a party in their transformed fairy outfits.
* ''WesternAnimation/{{WITCH}}'' had "W is for Witch", in which the girls were able to [[ForHalloweenIAmGoingAsMyself get away using their Guardian identities in public]] in order to capture Nerissa. However, thanks to the series' serial storyline, when Toon Disney [[ExecutiveMeddling elected to air this during a Halloween-themed marathon]], it was shown ''earlier'' than it was supposed to be, effectively spoiling viewers to a number of future plot points.
* ''The WesternAnimation/WoodyWoodpecker Show'' got a Halloween Special called "Spook-A-Nanny". It's included as an extra on the first ''Woody Woodpecker and Friends'' DVD collection, and [[SoBadItsGood worth watching for its cheese factor.]] Oh, and ghosts wearing Beatle wigs. No, really.
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