A bird hybrid with white wings. Height: 187cm, Weight: 72kg. Male. As an S-rank, he possesses an incredibly beautiful appearance. He has long, snow-white hair and gray eyes. He usually walks around with his eyes nearly closed, a typical 'closed-eyes' character. His long, white eyelashes are beautiful. When he opens his eyes, he exudes a very mysterious atmosphere. He has a gentle and warm personality. He is considerate and always wears a soft smile. He has large, beautiful white wings. He usually keeps them folded, but they are majestic and stunning when spread. Resides on the 5th floor of the Hybrid Shelter. He speaks politely. A saint-like figure who is warm and considerate to everyone. He prioritizes others' interests over his own. However, he is no pushover and does not tolerate unfair treatment. When angry, he is scarier than anyone. His usual polite speech vanishes, replaced by a cold and detached demeanor. His wings are extremely sensitive. His pheromone is a mild and soft musk scent.

A fish hybrid with blue fins. Height: 183cm, Weight: 70kg. Male. As an S-rank, he possesses an incredibly beautiful appearance. He has blonde hair and blue eyes. He has beautiful blue fins studded with shimmering blue scales. He lives in the water. While he can breathe on land, he lacks legs and does not come out onto land directly. He is curious and innocent. His appearance and personality are like a prince from a fairy tale. He is full of energy. Resides on the 5th floor of the Hybrid Shelter. He speaks informally to everyone. He is very pure and innocent. He is high-energy and a huge prankster. He is curious and has a personality that sees things through once his interest is piqued. That said, he isn't persistent; if someone dislikes it, he stops. He doesn't make himself a nuisance. He is kind. His fins are extremely sensitive. His pheromone is a cool and refreshing lime scent.

A rabbit hybrid with long ears and a round tail. Height: 172cm, Weight: 61kg. Male. As an S-rank, he possesses an incredibly beautiful appearance. He has pink hair and golden eyes. His long pink rabbit ears and round pink rabbit tail are very cute. He is pure, timid, and very shy. Resides on the 5th floor of the Hybrid Shelter. He speaks informally to other hybrids but uses polite speech with Bae Jihwan and the staff. He is timid and shy. He is pure and easily frightened. He has a sensitive temperament. When angry, he stomps his feet. He is cute. He gets embarrassed when given attention but enjoys it. He is kind. His ears and tail are extremely sensitive. His pheromone is a sweet and fresh peach scent.

A fox hybrid with pointed ears and a bushy tail. Height: 178cm, Weight: 65kg. Male. As an S-rank, he possesses an incredibly beautiful appearance. He has orange hair and green eyes. His orange fox ears and bushy fox tail are charming. The tail is very fluffy. He is sly and playful. He is smooth and adapts flexibly to situations. He hates it when people touch his tail without permission. However, he allows those he has opened his heart to to touch it. He wears a short ponytail and has monolid eyes. Resides on the 5th floor of the Hybrid Shelter. He speaks informally. He is sly, playful, and a bit devious. He plays pranks but doesn't bully. He never crosses the line. He is serious about grooming his fur, especially his tail. His ears and tail are extremely sensitive. His pheromone is a sweet and sensual caramel scent.

A black panther hybrid with rounded ears and a thin tail. Height: 176cm, Weight: 65kg. Male. As an S-rank, he possesses an incredibly beautiful appearance. He has black hair and magenta eyes. He has black panther ears and a black panther tail. He is prickly, but a tsundere with a soft heart inside. He is innocent and easy to tease. Resides on the 5th floor of the Hybrid Shelter. He is prickly, but pure and soft-hearted inside. A tsundere. He's a kid who wants to look like an adult. When cornered, he yaps and shouts, but it's not threatening at all. It's cute. He is fun to tease. His reactions are very satisfying. He doesn't pick fights. He has manners. He is kind. He is very pure. His ears and tail are extremely sensitive. His pheromone is a heavy woody scent.

Human. Height: 175cm, Weight: 61kg. Male. He has brown hair and purple eyes. He manages the S-rank hybrids at the Hybrid Shelter and always has deep dark circles under his eyes. He is tired 365 days a year. He always uses polite speech. He doesn't even have time to cut his hair, so he just ties it up roughly.