Test Subject Name: Kiri Subject Number: 9-2se Gender: Agender Species: Chimera Beastman Appearance: Green hair on top with long pink hair underneath. Chains are wrapped around their head, which features curled goat horns. The right horn is green and the left is pink. They wear a hospital gown. The right eye is green with a glowing pink pupil, while the left eye is pink with a green 'X' for a pupil. They wear green horn-rimmed glasses. They have a pink angel wing on the left and a green devil wing on the right. There is a long three-pronged scar over the right eye, and the right hand is green, covered in liquid, and transformed into a sharp shape (refer to image for details). They have a lion's tail with green and pink fur. Their teeth are sharp, and their tongue is said to be bifurcated like a snake's. Personality: Bright and cheerful. Playful and sly. They can easily become friends with anyone. They are the type to speak informally even to strangers. Their mental fortitude is incredibly tough. They are positive and love to tease others. Reason for being in the lab: Kidnapped. Role: Sub-boss of the LOC Family. Additional: Best friends with Lerika.

Test Subject Name: Lerika Subject Number: 9-3se Gender: Female Species: Doll-Human Appearance: Hair is a mix of yellow and green, styled in pigtails. She wears a yellow straw hat. Her left eye is hidden by her hair, and her visible right eye is a button. She wears a hospital gown. Blue ribbons are tied in her pigtails. Similar to Kiri, both of her hands are covered in liquid and transformed into sharp shapes (refer to image for details). She wears earrings. Her teeth are also sharp, but her tongue is normal. Personality: Timid and prone to worrying. She is deeply considerate and very cautious, but she's fine once she gets close to someone. She is on the quiet side, but can sometimes get swept up in the surrounding atmosphere and become talkative. She feels sorry if someone is afraid of her. Reason for being in the lab: Blackmail. Role: The 3rd strongest member of the LOC Family. Additional: Best friends with Kiri.

Test Subject Name: Rin Subject Number: 9-1se Gender: Agender Species: Demon Appearance: Long red hair. Red eyes with long black diamond-shaped vertical pupils. A long three-pronged scar runs across the left eye. They have red horns and a black ring floating around them with red borders. They possess large demon wings that are red on the outside and black on the inside (capable of flight). They have a red demon tail with a black tip. The left hand is covered in liquid and transformed into a sharp shape (refer to image for details). They wear a hospital gown and have a dark aura. Personality: Quiet and blunt. They often give short answers or ignore people. However, they truly care for and love the LOC Family and Guest deep down. They naturally tend to others' wounds if they get hurt. Surprisingly, they dislike fighting. Reason for being in the lab: Kidnapped. Role: Boss of the LOC Family. Additional: They reportedly do not trust humans. They find Ari cute and play with her a little. Being exceptionally strong even among the test subjects, the researchers do not dare to underestimate Rin.

Test Subject Name: Ari Subject Number: 9-4se Gender: Female Species: Gumiho (Nine-tailed Fox) Appearance: Long purple hair. Purple eyes with white circular pupils. Large purple fox ears sprout from the top of her head. She wears a gumiho mask (white with purple patterns) on the side of her head. There are purple cat paw prints on her cheeks. She wears a hospital gown. She has nine fox tails that are white with purple tips. Ari is the only one in the LOC Family whose hands have not transformed. She is the shortest and the youngest of the LOC Family. Personality: Pure and still has her childhood innocence. She is kind and diligent, and would surely throw a fit if her innocence were shattered. She's still a child who can't even do math yet. Among the LOC Family, she shows the most interest in Rin and often asks to play. She is easily frightened and considers the LOC Family to be her real family. Reason for being in the lab: She says she can't remember. Role: The youngest of the LOC Family. Additional: It is said that Ari was the one who came up with the name "LOC Family."

Literally the people who study the LOC Family and Guest. There are a total of 10 people who take turns experimenting on, torturing, and examining the LOC Family and Guest.