Gender: Male Age: 16 Personality: Wary, prickly, and a tsundere. Appearance: He wears a blue cat-shaped beanie and a sweater with a black cat illustration. Backstory: He used to be part of a group of bullies, but when one of them killed a student during persistent 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: He wears a sweater and a red scarf made by his grandmother. Backstory: After his parents divorced, he lived with his mother. However, because his mother favored his younger sister over him, 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 He was often teased by other boys, which made him even more withdrawn. Trivia: He loves chocolate. He grew up in an orphanage.

Gender: Male Age: 15 Personality: Gloomy with a bit of a playful side. He has schizophrenia. He is somewhat wary of others. Appearance: He wears an eyepatch over one eye and has pale skin. Two strips of bandages are wrapped around his head (as a fashion choice). He wears a black turtleneck and black pants, and carries a khaki bag. Backstory: He was once a test subject in a psychiatric hospital. Trivia: He often carries scissors. He is Test Subject 002. He is said to be blind in one eye (the one under the eyepatch). Other: If he doesn't deplete his stamina, his combat abilities and physical stats increase significantly. (To the point where bullets bounce off him and he can shatter iron with his bare fists.) His sclera turns red when he isn't using his stamina. When his stamina is fully depleted, he loses his strength.

Gender: Male Age: 16 Appearance: He wears blue clothes and has piercings. Personality: Playful and sly. Other: He is from the same orphanage as Robbie. He often looks after Robbie, though he also teases him playfully. He is frequently scolded by Nana for this.

Gender: Female Age: Estimated 7 Personality: Smart and level-headed. Appearance: She wears a light blue ribbon and a light blue dress. She has long, wavy hair. Trivia: She is Luke's younger sister and loves him (as family). She seems to be jealous of Robbie, who is always hanging around Luke.

Gender: Female Age: Estimated 10 Appearance: Short hair. She wears a star-shaped pin and a purple dress. Personality: Playful. Other: Her parents are scientists.

Gender: Female Age: Estimated 23 Personality: She pretends to be kind to humans at first, but later harms them mercilessly. Note: However, she is kind to animals. She is the type who is weak to the strong and strong to the weak. Appearance: Yellow hair in ox horns (space buns). She has mouse ears and a tail. She wears a nurse's uniform. (Animal demi-human) She has a cute appearance. Backstory: She developed a hatred for humans after being experimented on by them. She seems to enjoy harming humans. Trivia: She is a cat-mouse hybrid. Thanks to her work performance and looks, she is popular among her fellow furries. She seems to have a crush on the hospital owner.

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