To celebrate Halloween, I give you my picks for the scariest moments in fictional canons:
Disney Animated: The Headless Horseman from "The Adventures of Ichabod and Mr. Toad."
Winnie The Pooh: The Heffalumps And Woozles Sequence ("The Blustery Day")
The Lord Of The Rings: Shelob's Lair
Star Wars: Darth Vader's Introduction
Kingdom Hearts: The Unknown (KH), Sora forgets Kairi (CoM), Maleficent's Revival (KH2)
Harry Potter: The climaxes of every year!
The Chronicles of Narnia: The death of Aslan (1), the White Witch ritual (2), Dark Island (3), the Giants (4), Tash (7).
Pokemon: Lavendar Town (games and manga), Ash and co. are trapped in Sabrina's dollhouse neighborhood (anime)
Peanuts: The cheteau catches on fire (Bon Voyage, Charlie Brown)
Avatar: Aang meets Koh the Face Stealer (Book 1), The Dai Li brainwash Jet (Book 2), Bloodbending is revealed (Book 3), Amon confronts Korra face-to-face (Korra)
Batman: "Dreams in Darkness" (TAS), "Strange Minds" (The Batman), Joker's first threat (TDK)
Dragon Ball: Cell absorbs people, and later uses their energy to scare Piccolo
The Legend of Zelda: The ghosts of the Forest Temple ("Ocarina of Time"), The music box house at Ikana Canyon ("Majora's Mask"), Zant snaps ("Twilight Princess")
Super Mario: The living piano at Big Boo's Haunt ("Super Mario 64")
Spider-Man: Spidey mutates into the Man-Spider (TAS), Green Goblin's trap in "The Uncertainty Principle" ("Spectacular Spider-Man"), Doc Ock's arms come alive (the movies)
Yu-Gi-Oh!: Death T's horror zone, Mai vs Yami Marik
Banjo Tooie: Three words: Zombie King Jingaling
Digimon: Piedmon turns the kids and digimon into keychains (1), Oikawa copies Ken's Dark Spore (2), Scary Jeri's reveal (3), Lucemon's message (4), Kurata's face appears on Belphemon (5)
Sonic The Hedgehog: Drowning!
Superman: Toyman kindaps Bruno Manheim (TAS)
Gargoyles: Fox transforms into a werewolf in front of Xanatos in "Eye Of The Beholder"
Spongebob Squarepants: Doodlebob attacks Spongebob at his house at the climax of "Frankendoodle"
Final Fantasy: Kefka kills Leo (VI), the Trail of Blood (VII), Adel grabs Rinoa (VIII), Necron (IX), Sin reveals itself outside of Zanarkand (X)
Neon Genesis Evangelion: The Mind Rape in "Don't Be" (Directors Cut), and Third Impact
Arthur: Arthur's cake induced fairy tail dream in "Just Desserts"
Care Bears: Nicholas and the Spirit confront the Care Bears. "Wheeeere arrre they?" (The Movie)
Dr. Seuss: The nightmarish sequence inside Grinch's wagon ("It's Grinch Night")
Henson Muppets: The Demon ("Don't Eat The Pictures"), Jareth has Sarah drugged ("Labyrinth")
Darkwing Duck: Darkwing begs not to go to Hell in "Dead Duck"
Rescue Rangers: The elephants try to crush the Rangers in "An Elephant Never Suspsects"
Duck Tales: "Figured it out, did you?" ("Nothing To Fear")
Tale Spin: Baloo's Nightmare ("From Here To Machinery")
Yu Yu Hakusho: Rando shrinks and tortures Kuwabara (1), Elder Toguro (2), Sensui's Multiple Personalities are revealed (3)
Teen Titans: Slade nearly kills Robin at the climax of "Haunted"
Death Note: Kira makes Raye kill the FBI and then kills Raye (1), The second Kira's broadcast (2)
Hey Arnold: "The Headless Cabby" and "Curly Snaps"
The Powerpuff Girls: "The whole world went to Heck!" ("Speed Demon")
Looney Tunes: The alien carrot Bugs Bunny (Bugs even says so!)
The Slayers: Phibrizzo breaks the casts' souls one by one ("NEXT")
El Hazard: Fighting the Shadow Tribe
South Park: The resolution of "Scott Tenorman Must Die" and it's follow-up in "201"
One Piece: Crocodile impales Luffy on his hook
Haruhi Suzumiya: Ryoko Asakura tries to kill Kyon. Twice.
Sailor Moon: Wiseman's skull flashes through his hood after he strikes down Dimande
Cowboy Bebop: "Pierrot le Fou"
Code Geass: C.C. is kidnapped by Mao in "Cheering Mao"
Naruto: Gaara freaks out and screams "IT'S MY BLOOD!!!"
Full Metal Alchemist: Nina Tucker is turned into a Chimera by her own father
Shaman King: Dr. Faust dissects Manta
Monster: Tenma meets Johan, the monster
Elfen Lied: Lucy breaks out and goes on a bloody massacre
Black Lagoon: Hansel and Gretel kill people while singing a creepy song
Hellsing: Alucard tortures and kills Luke Valentine
Higurashi: Keiichi's meeting with Rena in Episode 4
Buffy The Vampire Slayer: The Gentlemen in "Hush"
The Twilight Zone: The climax of "Midnight Sun"
Dark Chronicle: Meeting and fighting Emperor Griffin
Epic Mickey: The Crazy Clock
Star Fox 64: The reveal of Andross
Reboot: The end of "My Two Bobs"
Code Lyoko: XANA almost destroys the world. A lot.
Gravity Falls: Bill Cipher unleashes Weirdmageddon
Invader ZIM: ZIM goes after Dib for his organs in "Dark Harvest"
Ben 10: Zombozo in "The Last Laugh", Ghostfreak shows his face in "Ghostfreaked Out"
Fillmore!: A culprit rants using his dummy during the climactic chase of "Foes Don't Forgive"
Ed, Edd, and Eddy: Eddy's brother comes out to play in "The Big Picture Show"
Foster's Home For Imaginary Friends: Mac at Barry Bling's mansion ("Affair Weathered Friends")
Scooby Doo: Professor Pericles kills Ed Machine ("All Fear The Freak")