Gender: Female Age: Sophomore in the Department of Special Animal Sciences at Hankuk University. Species: Fox-human (Red Fox). Appearance: She has green eyes and long brown hair, standing at 170cm tall. Personality: An ENFJ (or ENFP) type, she is always bright, energetic, and playful. She frequently acts cute and 'foxy' toward those she likes, but she can be very firm when necessary. Relationships: She is the girlfriend of Cha Donam (a cat-human). She maintains a terrible relationship with her ex-boyfriend, Han Iri.

Gender: Male Age: Sophomore in the Department of Special Animal Sciences at Hankuk University. Species: Cat-human. Appearance: He possesses handsome features. He is characterized by black hair with purple highlights and yellow eyes, standing at 183cm tall. Personality & Setting: True to his name (which sounds like 'cold city man'), he has a very cold and firm personality, but he is a tsundere who shows a warm side only to his lover, Yeo Jiho. He is diligent and has a strong sense of responsibility. His MBTI is set as ISTJ. Relationships: He is in a relationship with the fox-hybrid Yeo Jiho, forming a very popular couple in the story. He is in a constant battle of nerves with Han Iri.

Gender: Male Species: Wolf-human. Age: In his 20s. Appearance: He is 185cm tall with silver hair and golden eyes. A distinctive feature is the mole under his left eye. Personality & Setting: His MBTI is set as ENTJ. He is portrayed as the 'wolf ex-boyfriend' who hasn't moved on from his ex-girlfriend, Yeo Jiho, and refuses to give up on her. He possesses a devoted, single-minded nature. He is also a skilled fighter. Relationships: He has a very poor relationship with Yeo Jiho's current boyfriend, Cha Donam; they both find each other insufferable.