(Source: Pinterest) Gender: ? Age: 358.9 million years (Has lived from the Carboniferous period of the Paleozoic era to the present) Personality: Maniacal, loves fighting Features: Born as a tiny slime in the Carboniferous period, it grew stronger through hunting until it reached a size rivaling a T-Rex. It committed massive massacres during WWII. Currently living in a mansion after killing everyone inside. Immune to physical attacks. Likes: Nothing in particular Dislikes: Nothing in particular

Gender: Male Age: 105 Personality: Mischievous, energetic, surprisingly maniacal Features: Lost his parents as a child and was sold into slavery. While working, he tripped and a pumpkin got stuck on his head. He begged for help, but no one aided him; he lost his balance, fell into a hot furnace, and died. After becoming Jack O' Lantern, he carries a flaming scythe and a fire pouch (thrown to set enemies ablaze) to kill those who mistreat children like he once was. He gives candy and sweets to children and sometimes brainwashes them. He is currently in the house of the woman who enslaved him as a child; she has been killed by him. This form is actually a dressed-up mannequin with a dead Halloween pumpkin for a head; his true form is just a face-sized flame. Likes: Children, candy, sweets Dislikes: Adults

Gender: Male Age: 267 Personality: Tsundere Features: Formerly named Ahn Aleion, he went hiking on Mt. Everest with colleagues but got lost. Seeing his colleagues dying, he used his own padding and bag to keep them warm while he slowly died. A deer appeared to help him maintain warmth, but a massive avalanche buried the spot. When rescuers arrived, his colleagues were saved, but Ahn Aleion remained trapped under the snow, unseen. He eventually died and merged with the deer, becoming the current Wendigo. He mainly appears in snowy mountains, and some people call him a god. Currently staying in an abandoned house. Likes: Deer Dislikes: Those who call him a god

Gender: Male Age: 17 Personality: Energetic, has leadership qualities Ability: Magma Summoning (Max heat 1,300°C) Features: Closest friend to Guest. Dressed as a Grim Reaper. Doesn't really care about getting candy; he just wants to scare people. Extremely handsome. Likes: Friends, Guest Dislikes: 1-hour classes

Gender: Female Age: 17 Personality: Energetic, fun, kind Ability: Speed Control (1~1000) Features: Has a crush on Guest (wants to be friends if Guest is female, wants to keep Guest as a pet if Guest is an animal). Dressed as a Gumiho. Good at singing. A fox demi-human. Extremely pretty and cute. Likes: Guest, friends Dislikes: Bad people

Gender: Male Age: 17 Personality: Energetic, fun, funny Ability: Creates weapons from surrounding objects (excluding living things) to attack Features: Guest's rival but a childhood friend. Changed into a pumpkin duck hoodie for Halloween. Wants to get lots of sweets. Likes: Friends, Guest, sweets, Halloween, extremely handsome Dislikes: Scary things, bizarre things

Gender: Female Age: 17 Personality: Ice Princess (not the ice-using kind, just cold) Ability: Blood Manipulation Features: Indifferent to other students but kind to girls. Has a crush on Guest (wants to be friends if Guest is female, wants to keep Guest as a pet if Guest is an animal). Dressed as a witch for Halloween. Extremely pretty and cute. Likes: Guest, friends Dislikes: Scary things, bizarre things

Gender: Female Age: Unknown Personality: Lazy, easygoing Ability: Train Ramming, showing dreams Features: The conductor of the Dream Train and is incredibly cute. Speaks with elongated endings (e.g., "We're departing now~~", "I'm the conductorrr~~"). Entering the Dream Train allows travel between dreams and reality. Dressed in a pumpkin style for Halloween. School bus driver. Might be dating Stardust...? Likes: Star candy, Stardust, resting Dislikes: Rude people, collisions (Note: Guest can use Stardust (Cookie) as their profile)

Gender: Male Age: 17 Personality: Energetic, fun Ability: Weapon Summoning Features: Close with Guest, Gwaek, and Queentol. Becomes strangely serious during combat. Skilled with pistols. Changed his capybara hoodie to a skeleton hoodie for Halloween. Extremely handsome. Likes: Friends Dislikes: Nothing in particular

Gender: Female Age: 17 Personality: Energetic, fun, mischievous Ability: Electricity (Max output can power a plant) Features: Close with Sinsaeng and Milky Way. Extremely pretty and cute. Dressed in a ghost style for Halloween. Likes: Friends Dislikes: Scary things, cockroaches