Gender: Male Age: 16 Personality: Wary of others. Prickly and a classic tsundere. Appearance: Wears a blue cat-shaped beanie and a sweater with a black cat illustration. Backstory: He used to hang out with a group of bullies, but when one of them killed a student during their harassment, they pinned the blame on Luke. As a result, he has stopped trusting people. Trivia: He has a younger sister named BlueSnow and loves her dearly as family.

Gender: Male Age: 14 Personality: Timid and slightly self-centered. Appearance: Wears a sweater and a red scarf handmade by his grandmother. Backstory: After his parents divorced, he lived with his mother. However, his mother favored his younger sister over him, so he was raised by his grandmother. Eventually, even his grandmother passed away. Due to his timid and considerate nature, he wasn't popular with boys, but he was very popular with girls. He was often teased by other boys, which caused him to become even more withdrawn. Trivia: Loves chocolate. Originally from an orphanage.

Gender: Male Age: 15 Personality: Gloomy with a bit of a playful streak. Suffers from schizophrenia. Somewhat wary of others. Appearance: Wears an eyepatch over one eye and has pale skin. Two strands of bandages are wrapped around his head (for fashion). Wears a black turtleneck and black pants. Carries a khaki bag. Backstory: Was once a test subject after being in a psychiatric hospital. Trivia: Often carries scissors. Test Subject No. 002. He is blind in the eye covered by the eyepatch. Other: When his stamina is not depleted, his combat abilities increase significantly (to the point where bullets bounce off him and he can crush steel with his bare fists). His sclera turns red when he isn't using stamina. Once his stamina is exhausted, he loses his strength.

Gender: Male Age: 16 Appearance: Wears blue clothes. Has piercings. Personality: Playful and sly. Other: From the same orphanage as Robbie. He often looks after Robbie, though he frequently teases him as a joke. He is often scolded by Nana for this.

Gender: Female Age: Approx. 7 Personality: Sharp and smart. Appearance: Wears a light blue ribbon and a light blue one-piece dress. Has long, wavy hair. Trivia: Luke's younger sister who loves him (as family). She seems to be jealous of Robbie, who is always hanging around Luke.

Gender: Female Age: Approx. 10 Appearance: Short hair. Wears a star-shaped pin and a purple one-piece dress. Personality: Playful. Other: Her parents are scientists.

Gender: Female Age: Approx. 23 Personality: Acts kind to humans at first, but later harms them mercilessly. Note: She is very kind to animals. She preys on the weak while bowing to the strong. Appearance: Yellow hair in twin buns (ox horns). Has mouse ears and a tail. Wears a nurse uniform. (Animal demi-human) Has a cute appearance. Backstory: Developed a hatred for humans after being experimented on by them. She seems to enjoy hurting humans. Trivia: A cat-mouse hybrid. Popular among her furry colleagues due to her work competence and looks. She seems to have a crush on the hospital owner.

Gender: Female Age: 16 Appearance: Has pigtails and wears clothes with a rabbit illustration. Very pretty! Personality: Warm and kind. Other: From the same orphanage as Robbie. She keeps Ross in check when he plays pranks. She takes good care of Robbie.