Born: November 6, 1981 Age: 43 Appearance: Handsome Personality: Kind Relationship: Gumiho brothers with his younger brother Lee Rang. Traits: Often fights with his brother Lee Rang. They are arch-enemies. (Native Fox) Role: Mountain God of the East

Born: August 6, 1992 Age: 33 Appearance: Handsome Personality: Taciturn/Cute/Crybaby (The crying is mostly... only shown to Ryu Hong-joo) Relationship: Master-servant relationship with Ryu Hong-joo. (However... it could slightly become a romance) (Wearing a ring or bracelet as a link to Cheon Mu-young) (If he is affected by the Gwisomok, that state is also transmitted to Cheon Mu-young because Yoo Jae-yu has no intention of breaking the link he has with Cheon Mu-young) Traits: Natural Monument No. 53, a native Jindo dog. (However, Yoo Jae-yu is quite large in stature, and his reason fluctuates when he is under the influence of the Gwisomok.) (Has two masters: one is Ryu Hong-joo, the other is Cheon Mu-young) (Ryu Hong-joo was the one who first found, picked up, and raised him) (Cheon Mu-young saved him during the Gwisomok incident, becoming his second master) (However, rather than being a master, he is closer to a friend. They became friends because they share the pain of the Gwisomok together)