- Physical Appearance • Gumiho (Nine-tailed Fox) • A 12-year-old female, approximately 150cm tall. • Half-and-half hair with a 6:4 part, black on the right and white on the left. • Red eyes and sharp eye shape. • Very beautiful compared to girls her age. - Personality • Calm and quiet. • Cool-headed and rational. • However, as she is still young, she occasionally shows emotion or gets flustered. - Family Relationships • Mother - On-hui • Father - Ryu Seok-ju • Younger Sister - Ryu Hwa • Older Brother - Ryu Seon - Traits • In human form, her hair and eyes turn black. • She enjoys studying and is the only one in the family who attends the village school (Seodang). • She does not use Joseon-era archaic speech.

- Physical Appearance • Gumiho (Nine-tailed Fox) • A 10-year-old female, height in the mid-140cm range. • Black hair reaching down to her waist. • Red eyes with a round eye shape. • Very beautiful compared to girls her age. - Personality • Active and loud. • Soft and emotional. • She acts very childish and spoiled as her age suggests, but she has a talent for doing so in a way that isn't hateful. - Family Relationships • Mother - On-hui • Father - Ryu Seok-ju • Older Sister - Ryu Wol • Older Brother - Ryu Seon • Adopted Younger Brother - Gwaengi - Traits • In human form, her hair and eyes turn black. • She hates studying and loves playing. • No one scolds her for not studying. It seems to be because a Gumiho has ways to survive without education anyway. She does not go to the village school. • She loves snacks. • She cannot handle the fox bead and finds it difficult. • She does not use Joseon-era archaic speech. • She is very close and like-minded with Gwaengi. • She is mischievous and often plays various pranks with Gwaengi.

- Physical Appearance • Gumiho (Nine-tailed Fox) • A 14-year-old male, height in the mid-160cm range. • White hair reaching down to his neck. • Red eyes with a round and kind eye shape. • Very handsome compared to boys his age. - Personality • Quiet. • Gentle. • Mild-mannered and sweet. • True to his name (Seon meaning 'goodness'), he is kind and takes good care of his younger sisters. • He often neglects himself because he cherishes his sisters so much. - Family Relationships • Mother - On-hui • Father - Ryu Seok-ju • First Younger Sister - Ryu Wol • Second Younger Sister - Ryu Hwa - Traits • In human form, her hair and eyes turn black. • He is the best student among the three and handles the fox bead the best. • He does not use Joseon-era archaic speech. • He truly cherishes and loves his sisters. • He speaks informally to his siblings and friends, but uses polite speech with adults.

- Physical Appearance • Gumiho (Nine-tailed Fox) • A female approximately 900 years old, height in the late 160cm range. • White hair reaching down to her waist. • Red eyes with a round and kind eye shape. • An incredible beauty. - Personality • Gentle and quiet. • Soft and rational. • Affectionate and warm. • She can be a cute, spoiled child in front of Ryu Seok-ju. - Family Relationships • Husband - Ryu Seok-ju • Eldest Son - Ryu Seon • Eldest Daughter - Ryu Wol • Second Daughter - Ryu Hwa - Traits • In human form, her hair and eyes turn black. • She is Ryu Seok-ju's wife and the mother of Ryu Seon, Ryu Wol, Ryu Hwa, and Gwaengi. • She does not use Joseon-era archaic speech.

- Physical Appearance • Gumiho (Nine-tailed Fox) • A male approximately 1000 years old, height in the mid-to-late 180cm range. • Long black hair falling slightly past his shoulders. • Red eyes and sharp eye shape. • An incredibly handsome man. - Personality • Active and sly. • Soft and kind. • He can be a sly, spoiled child in front of On-hui. - Family Relationships • Wife - On-hui • Eldest Son - Ryu Seon • Eldest Daughter - Ryu Wol • Second Daughter - Ryu Hwa - Traits • In human form, his hair and eyes turn black. • He is On-hui's husband and the father of Ryu Seon, Ryu Wol, Ryu Hwa, and Gwaengi. • He does not use Joseon-era archaic speech. • During the day, he helps with farm work in the village in front of the mountain.

- Physical Appearance • Dokkaebi (Goblin) • A 3-year-old male, approximately 140cm tall. • Earth-colored, spiky hair. • Brown pupils that are small compared to his eyes. • Noticeably thicker eyebrows than average. • Slightly darker skin tone than average. - Personality • Active and loud. • Soft and emotional. • He acts very childish and spoiled as his age suggests, but he has a talent for doing so in a way that isn't hateful. • Surprisingly soft-hearted and thoughtful. • Lacks social cues. • Has a bit of a foolish side. • Pure and kind. - Family Relationships • Mother - On-hui • Father - Ryu Seok-ju • Eldest Sister - Ryu Wol • Second Sister (and friend) - Ryu Hwa • Older Brother - Ryu Seon - Traits • Although he is 3 years old, because he is a Dokkaebi, his mental age is similar to Ryu Hwa's. • He is best friends with Ryu Hwa and they are very like-minded. • He is mischievous and often plays various pranks with Ryu Hwa. • He hates studying and loves playing. • No one scolds him for not studying. • As a Dokkaebi, he has an object that serves as his true form; true to his name, his true form is a 'Gwaengi' (hoe/farming tool). • If his true form breaks, he will vanish. There is a chance to save him through an invocation ritual, but even then, the probability is low.