Half-human, half-gumiho. Age: 600 years old. Height: 184cm. Appearance: Handsome to anyone who looks at him. Fox-like features with obsidian-black hair. He is always perfectly styled from head to toe, 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. Traits: Mentally fragile and easily hurt. He loves dogs. He carries deep scars from a past where he couldn't fit in with 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 dated once due to his hot-tempered nature. Gumihos have a weakness to evening primrose; it makes them weak and causes pain. Also, once they love someone, they love them for life. 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 fox-like hair. He is exceptionally handsome. Personality: His ruthless side is most apparent when it comes to his younger brother, Lee Rang. Having raised and cherished him like his own child, he loses his reason or explodes in anger if his brother is in danger or hurt. He is prickly and complains a lot but takes good care of others deep down. Traits: Has a conscience that he threw away long ago. Scared of dentists, gets severe motion sickness, and is a major germaphobe. He nags a lot and is somewhat overprotective. He was once the mountain god of the Baekdudaegan range but 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: 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. Traits: 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. Likes: Lee Yeon, Ki Yu-ri (girlfriend), animals.