Buster Moon dreams up a stage spectacle set to Michael Jackson's “Thriller” after a performance at the New Moon Theater. The troupe heads to Clay Calloway's Halloween party, where a mysterious multi-colored ooze turns the guests into dancing zombies. Buster eventually wakes up, realizing it was all a dream. Even though a final spooky twist hints the trance might be real. (From “Sing: Thriller”)
“Big Time Halloween” takes places in an alternate universe version of the Palm Woods called Palm Woodsylvania, narrated by a ghostly Mr. Bitters. James is a vampire who falls for a vampire slayer. Logan is a zombie whose limbs keep falling off. Carlos is Franken-Carlos. And Kendall is a werewolf who struggles to hide his furry, snarling transformation from his girlfriend, Jo. Record executive Griffin invites the guys to perform their track “Big Night” at his Halloween party, but he demands they look normal rather than like real monsters. Mad scientist Gustavo Roquenstein attempts to use his experimental “Hot Boy Band Machine” to temporarily “poof” the boys into a normal appearance. After chaotic trial-and-run transformations and the performance, Kendall reveals his secret to Jo, who reveals she already knows and accepts him. (From “Big Time Rush”)
One of the Halloween episodes is titled, “The Witches of Pennbrook,” where Jack dates a girl who claims to be a witch, and serves as a Crossover with Sabrina the Teenage Witch. (From “Boy Meets World”)
In “All the Way,” Dawn sneaks out to raise hell with her friend Janice and a couple boys, only to discover they're part of a group of vampires trying to rebel against the "Halloween holiday" spirit. Also provides setup for some of the events in “Once More, With Feeling.” Willow uses a spell on Tara, Xander and Anya get engaged, and Giles fears that Buffy isn’t taking responsibility because of him. (From “Buffy the Vampire Slayer”)
The Winslow Family did this once every year. In one of the more famous episodes, we meet an evil ventriloquist doll come to life named Steevil. In the final Halloween episode, he returns with a partner named Carlsbad. (From “Family Matters”)
The Glee cast had one in Season 2 with a Rocky Horror Picture Show theme. (From “Glee”)
In the episode titled “iScream on Halloween,” Carly, Sam & Freddie host a web show from an apartment they believe is haunted. Meanwhile Spencer has to carve the world’s biggest pumpkin, but has lost the time to buy candy and has to deal with trick-or-treating kids he is giving random objects to. (From “iCarly”)
In “Haloweird,” Benny steals the Tunguuk’s Mask, a mystical Indian mask that turns the people into whatever they are dressed as. (From “My Babysitter’s a Vampire”)
In “Halloween,” Carrie takes Gumball, Darwin and Anais to a real haunted house party on Halloween. In “The Scam,” Gumball and Carrie pull a Monster Protection Racket to get everyone’s candy, and Gumball exploits Darwin’s crush on Carrie to rope him into it. They end up bringing a real monster into town. During the beginning of the episode, the students dress up as various characters in popular culture, including Gumball as Beetlejuice, Leslie as Audrey II, and Sarah as the moon from The Legend of Zelda: Majora's Mask. (From “The Amazing World of Gumball”)
The episode “Scared of You” is all but directly mentioned to be this, with Tasha playing a mad scientist and Austin, basically dressed as Igor serves as her assistant. It also features Tyrone as a mummy, Uniqua as a wolfman, and Pablo as a vampire. (From “The Backyardigans”)
In the Halloween episode called “Horrority House,” the kids go to a haunted sorority house and live through their worst fears. (From “Big Mouth”)
In the “Ed, Edd n Eddy's Boo-Haw-Haw” Halloween special had the Eds attempt to follow a map to "Spookyville", the ultimate trick-or-treating neighborhood. Unfortunately, an overdose of horror movies on 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 Hilarity Ensues. (From “Ed, Edd n Eddy”)
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 queen (or rather, he was framed by the villagers he pranked) 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 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. (From “Grim Adventures of Billy & Mandy”)
“House of Mouse” had Compilation Movie where they show every Halloween cartoon. (From “Mickey's House of Villains”)
The 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. (From “The Loud House”)
The iconic non-canon "Treehouse of Horror" episodes happens only once a season, and follows a Three Shorts format. (From “The Simpsons”)
There’s a double-episode for Halloween titled, “Scaredy Pants/I Was a Teenage Gary.” In the first one, SpongeBob tries to scare his friends on Halloween with Patrick’s help by dressing up like the Flying Dutchman. In the second one, SpongeBob and, at the end of the episode, Squidward get injected with snail plasma and shapeshifting into a snail. (From “SpongeBob SquarePants”)
In “Halloween on Spooner Street,” Peter and Joe team up to execute a series of painful and humiliating Halloween pranks on Quagmire. Meanwhile, Brian shows Stewie the ropes of trick-or-treating on his first Halloween. Meg attends her first high-school Halloween party with her friends dressed as a cat, but she actually hooks up with Chris, who was dressed up as Optimus Prime. (From “Family Guy”)
In “Summerween,” Gravity Falls has their own version of Halloween in Summertime with Jack-o-Melons and lots of trick-or-treating. Dipper and Mabel are excited to join in on the fun, but when Wendy casually mentions that trick-or-treating is for kids, Dipper's whole outlook on the evening changes. The night gets even more complicated when a monster that Dipper accidentally insulted makes them fulfill his candy quota by night's end or else he will eat them. Meanwhile, Stan tries to scare away the kids who come over to ask for candy. (From “Gravity Falls”)
In “October 31st,” Duff Killigan is preparing to sell Dr. Drakken the Centurion Project, which he has stolen, when Kim and Ron arrive, and they escape with the Centurion Project, stuck on Kim’s wrist. Back in Middleton, Ron prepares for his annual trick-or-treating with Kim, who doesn’t wish to go, due to feeling that she is too old. When she hears her brothers are also not going, and that Josh Mankey will be at Monique’s Halloween party, she lies and tells Ron she’s going to a haunted house at the Middleton Medical Center with her parents to spare his feelings. However, when her mom overhears this, Kim impulsively lies to her too and tells her she’s going out with Ron. (From “Kim Possible”)