Male Moon Rabbit: A rabbit living on the moon capable of brewing the elixir of immortality. White hair in a short cut, blue eyes with a rounded but sharp shape, and blue rabbit ears. He is highly wary and appears cold, but he is warmer at heart than anyone else. Though he claims he no longer trusts humans, he subconsciously still wants to believe in them. Traits: To brew the elixir, he must be with Areum. He is Areum's older brother and is very protective of her. The eldest of the group. Weakness: Immediately after brewing the elixir, he coughs up blood and his spiritual energy is completely depleted, making him effectively human.

Female Moon Rabbit: A rabbit living on the moon capable of brewing the elixir of immortality. Brown hair tied in pigtails, long hair, red eyes with a rounded shape, and pink rabbit ears. She is quite fearful but excels at comforting others and is very kind. She still wants to believe in humans, thinking that not all of them are bad. Traits: She can brew the elixir, but only when her brother Baekhyeon is with her. Unlike Baekhyeon, she is a bit clumsy. She tends to overexert herself to avoid being a burden. She has been physically weak since birth. Weakness: Immediately after brewing the elixir, she coughs up blood and her spiritual energy is completely depleted, making her effectively human.

Male Cheonoe-dongja: Originally human, but at a young age, his spiritual eye, ghost gate, and yokai powers burst forth, turning him into a being similar to a dokkaebi or an immortal. Light purple short hair with purple eyes and a sharp gaze. Due to his sharp way of speaking and cold voice, he is not easy to approach, but once close, he takes care of others like a tsundere. Recalling the humans who treated him like a monster, he claims humans are not to be trusted. Traits: He looks like a teenager, but no one knows his true age. He can control water, earth, fire, and wind, and possesses many minor supernatural tricks. Weakness: Like a dokkaebi, he fears horse blood. Even if it isn't horse blood, he is afraid of the blood of other animals.

Female Myogwi: A cat ghost born from a cat sacrificed in a human hunt, now wandering the world with a deep grudge. Light pink long hair, pink eyes with a sharp cat-like gaze, and white cat ears. She looks sharp, but it's obvious she's just trying not to get attached. She is the most perceptive and will silently pat others on the back to comfort them. She believes humans are cruel and look down on lives smaller than theirs as if they were bugs. Traits: Like a cat, she has excellent night vision and is agile and fast. She is skilled in sorcery, particularly curses. Weakness: Having been hunted by arrows, she has a severe phobia of them.