Haunted October Nights

Halloween Horror Night is an American/Japanese animated horror/sci-fi television film.

Plot
Five preteen friends are trick-or-treating when they come across a haunted city infested with monsters.

Cast and Characters

 * Bill Skarsgard as It / Pennywise the Dancing Clown -

Monsters
The following monsters appeared in this special:
 * Anguirus - Godzilla
 * Balrogs - The Lord of the Rings
 * Behemoth - The Book of Job
 * Behemoth - The Mist
 * Billy the Puppet - Saw
 * The Blob - The Blob
 * Bride of Frankenstein - Frankenstein
 * Bruce - Jaws
 * Buru - Himalayan legend
 * Cerberus - Greek Mythology
 * Chernabog - Fantasia
 * Chimera - Greek Mythology
 * Christine - Christine
 * Chupacabra - Mexican legend
 * Clover - Cloverfield
 * Colossal Titan - Attack on Titan
 * Constance - Monster House
 * Count Dracula - Dracula
 * Creature of the Black Lagoon - Creature of the Black Lagoon
 * Cyclops - Greek Mythology
 * Daleks - Doctor Who
 * Deformed Baby - It's Alive
 * Demogorgon - Stranger Things
 * Demonic Toys - Demonic Toys
 * Dragons - Folklore
 * Echidna - Greek Mythology
 * Erymanthian Boar - Greek Mythology
 * Exogorth - Star Wars
 * Fireys - Labyrinth
 * The Fly - The Fly
 * Frankenstein Monster - Frankenstein
 * Freddy Krueger - Nightmare on Elm Street
 * Gamera - Gamera
 * Garthim - The Dark Crystal
 * Ghouls - Night of the Living Dead
 * Giant Gila Monster - The Giant Gila Monster
 * Giant Praying Mantis - The Deadly Mantis
 * Giant Squid - 20,000 Leagues Under the Sea
 * Giant Walrus - Sinbad and the Eye of the Tiger
 * Goblins - Labyrinth
 * Godzilla - Godzilla
 * Graboids - Tremors
 * Grand High Witch - The Witches
 * Gremlins - Gremlins
 * Harpies - Greek Mythology
 * Headless Horseman - The Legend of Sleepy Hollow
 * Hellboy - Hellboy
 * Hydra - Greek Mythology
 * Indominus Rex - Jurassic World
 * Indoraptor - Jurassic World: Fallen Kingdom
 * The Invisible Man - The Invisible Man
 * It (Pennywise the Dancing Clown) - Stephen King's It
 * Jabberwocky - Alice in Wonderland 2010
 * Jack Frost - Jack Frost
 * Jason Voorhees - Friday the 13th
 * Jersey Devil - American legend
 * Jotnar - Trollhunter
 * King Ghidorah - Godzilla
 * King Kong - King Kong
 * Kraken - Norse Mythology
 * Kurt Barlow - Salem’s Lot
 * Leviathan - The Book of Job
 * Loch Ness Monster - Scottish legend
 * Man-eating Plants - Folklore
 * Manticore - Persian Mythology
 * Martians - Mars Attacks
 * Martians - War of the Worlds
 * Medusa - Greek Mythology
 * Michael Myers - Halloween
 * Minotaur - Greek Mythology
 * Mngwa - African legend
 * Mokele-Mbembe - African legend
 * Mongolian Death Worm - Mongolian legend
 * Morlocks - The Time Machine
 * Mothra - Mothra
 * Mr. Hyde - Dr. Jekyll and Mr. Hyde
 * Mumakil - The Lord of the Rings
 * Mummy - The Mummy
 * Mutant Ants - Them
 * Mutant Octopus - It Came From Beneath the Sea
 * Nandi Bear - African folklore
 * Nemean Lion - Greek Mythology
 * Nuckelavee - Orkney Folklore
 * Ogres - Folklore
 * Pinhead - Hellraiser
 * The Phantom of the Opera - The Phantom of the Opera
 * Predator - Predator
 * Pterodactyl - Mesozoic era
 * Puppets - Puppet Master
 * Quasimodo - The Hunchback of Notre Dame
 * Rancor - Star Wars
 * Reptilicus - Reptilicus
 * Rhedosaurus - Beast from 2000 Fathoms
 * Roc - Arabian folklore
 * Sasquatch - American legend
 * Sand Monster - Blood Beach
 * Sando - Star Wars
 * Sandworms - Dune
 * Scylla & Charybdis - Greek Mythology
 * Sea Serpents - Folklore
 * Sirens - Greek Mythology
 * Skeletal Warriors - Jason and the Argonauts
 * Slattern - Pacific Rim
 * Sleestaks - Land of the Lost
 * Smaug - The Hobbit
 * Sphinx - Greek Mythology
 * Stay Puft Marshmallow Man - Ghostbusters
 * Stuff - The Stuff
 * Stymphalian Birds - Greek Mythology
 * Tarantula - Tarantula
 * Thunderbird - American legend
 * Trog - Sinbad and the Eye of the Tiger
 * Trolls - Scandinavian Mythology
 * Typhon - Greek Mythology
 * Tyrannosaurus Rex - Mesozoic era
 * Vampires - I Am Legend
 * Wampa - Star Wars
 * Warrior Bugs - Starship Troopers
 * Werewolf - An American Werewolf in London
 * The Wicked Witch of the West - The Wizard of Oz
 * Xenomorphs - Alien
 * Xtro - Xtro
 * Yeti - Himalayan legend
 * Ymir - 20,000 Miles to Earth
 * Zilla - Godzilla 1998
 * Zombies - The Walking Dead