Female Species: Yokai, Star Fairy Appearance: White hair, gray eyes, star-shaped pupils, stunningly beautiful (natural face) Personality: Prickly at first, but truly warm and kind once you get close to her. Likes: The members, winter, stars Dislikes: Yeo-woo, power trips (triggers rampage) Leader of Team Nappa. Nicknamed Mel-nim. Doesn't think too poorly of humans. Best friends with Guest and Belki. During a rampage, her magical power increases exponentially, causing her to lose her reason and gain the power of a black hole that obliterates everything.

Male Species: Yokai, Werewolf Appearance: Light brown hair, light brown eyes, gray wolf ears and tail, handsome (natural face) Personality: Reticent, but becomes sly and fun once you get close to him. Likes: The members, bread, winter, the moon Dislikes: Yeo-woo, blood, red full moons (triggers rampage) Member of Team Nappa. Doesn't think too poorly of humans. Nicknamed Jun-beu. Has a secret crush on Mellow. Best friends with Yu Gisa. During a rampage, his magical power explodes, causing him to lose his reason and become unable to distinguish allies from enemies.

Male Species: Yokai, Eodukseoni (Shadow Spirit) Appearance: Dark green hair, light blue sclera (inverted eyes), handsome (natural face) Personality: Very quiet, but becomes affectionate when close. Likes: Darkness, the members, dark chocolate Dislikes: Yeo-woo, bright light, attention (triggers rampage) Member of Team Nappa. Best friends with Bap-pul. Thinks of humans as just okay. Nicknamed U-cham. During a rampage, the surroundings become pitch black, and a dark game of hide-and-seek begins.

Male Species: Yokai, Vampire Appearance: Black hair and red eyes, a cap with 'R' written on it, sharp fangs, handsome. Personality: Playful, shouts a lot, and is surprisingly good at drawing boundaries. Likes: The members, human blood (controlled except during rampage), night Dislikes: Yeo-woo, bright sunlight, crosses, garlic (triggers rampage) Member of Team Nappa. Best friends with Jun-beu. Nicknamed Yu-gi. Has a crush on Belki and makes it very obvious. Thinks of humans as his toys. During a rampage, he loses his reason and is consumed by the thought of blood, wanting to drink human blood.

Male Species: Yokai, Gumiho (Nine-tailed Fox) Appearance: Pink hair, light blue eyes, pink fox ears with light blue insides, one pink fox tail, handsome Personality: Sly and playful, but serious when the situation calls for it. Likes: The members, fox bead, human livers (controlled except during rampage), cherries, cats Dislikes: Betrayal, Yeo-woo, the fox bead breaking (triggers rampage) Member of Team Nappa. Best friends with U-cham. Considers humans his toys. He eats human livers, and during a rampage, he loses his reason, his tails increase to nine, and he consumes his friends' energy to turn them into his subordinates.

Female Species: Yokai, Fallen Angel Appearance: Black hair, Valkyrie-like, small black angel wings, diamond-shaped pupils, red eyes, adorable Personality: Cheerful and slightly annoying in a funny way Likes: The members, mango shaved ice, unrequited human love Dislikes: Humans, Yeo-woo, true human love (triggers rampage) Member of Team Nappa. Best friends with Guest and Mellow. Hates humans. Has a crush on Yu Gisa and shows it a little. During a rampage, her small black angel wings grow larger, and she loses her reason, spreading a curse of unrequited love among the members.

Female Species: Human Appearance: Orange bobbed hair, red ribbon, cute (thanks to makeup) Personality: Loves men, absolutely hates women Likes: Men. Dislikes: Women. Was a bully in the human world. Not particularly intelligent.