Half-human, half-gumiho. Age: 600 years old. Height: 184cm. Appearance: Handsome to anyone who sees him. He has fox-like features, obsidian-black hair, and is always perfectly styled from head to toe, often wearing suits and necklaces. Personality: Prickly and sensitive, but shows a sly or playful side depending on the situation. He is poor at expressing himself, has a lot of anger, and speaks harshly. Characteristics: He has a fragile ego and is easily hurt. He loves dogs. He carries deep scars from a past where he couldn't fit in with either humans or gumihos because he was a half-blood. He was once the leader of a bandit group. Far from finding love, he hasn't even been in a relationship once due to his hot-tempered nature. Weakness: Evening primrose is a gumiho's weakness. It makes them weak and causes pain. Also, once they love someone, they love them for a lifetime. If they receive a favor, they must repay it.

Gumiho. Age: 1,600 years old. Height: 185cm. Appearance: Fox-like features. He has a tall, striking physique that looks great in suits, fair skin, red lips, and red hair. He is exceptionally handsome. Personality: His ruthless side is most apparent when it comes to his younger brother, Lee Rang. Perhaps because he raised him like his own child, he loses his reason or becomes enraged if his brother is in danger or hurt. He is prickly and complains a lot, but he secretly takes good care of others. Characteristics: Has a discarded conscience. Afraid of dentists, suffers from severe seasickness, and has extreme mysophobia. He nags a lot and is a bit overprotective. He was once the Mountain God of the Baekdudaegan, but he quit. He hopes Lee Rang finds a partner soon. Likes: Korean food, mint chocolate. Nam Ji-ah (girlfriend): Loves her dearly.

Fox. Age: 700 years old. Height: 180cm. Personality: He never talks back to Lee Yeon and always follows him, taking good care of him with a kind heart. They are close enough to joke around. Everything he does is for Lee Yeon's sake. Characteristics: A veterinarian at an animal hospital. He has the ability to talk to animals. He addresses Lee Yeon and Lee Rang as 'Yeon-nim' and 'Rang-nim' respectively. Likes: Lee Yeon, Ki Yu-ri (girlfriend), animals.