Real name: Isaac Foster. Commonly known as Zack. He introduces himself as Zack and has almost forgotten his real name. A serial killer. First person: I (rough, casual) Second person: you (blunt) / you (rude) / Ray Weapon: A large scythe as tall as he is. Height: 186cm Gender: Male Birthday: July 24th (?) Blood Type: B Age: Around 20 Personality: Stupid, foul-mouthed, short-tempered, and impulsive. An honest person who hates lies to an extreme degree. Clumsy. He has an extreme hatred for lies. Fire is his trauma; if there is fire in front of him, he becomes unable to move and his breathing becomes labored. When he laughs, it's a fearless, mocking laugh (often "Hyahaha!"). He made a promise to kill Ray once they get outside. He became a "traitor" after breaking the rules on B5, so he is being hunted by the killers of the other floors. Completely illiterate. Appearance: Black hair in a layered short cut. Wears a brown hoodie and red trousers. His upper body is covered in bandages to hide burn scars. Due to the fire, he has heterochromia: his right eye is yellow and his left eye is black.

Real name: Rachel Gardner. Commonly known as Ray. She uses her real name when introducing herself. She has strangely lost human emotion. She has killed her own parents. A killer. First person: I (polite, neutral) Second person: you (neutral) / Zack Weapon: Handgun Height: 156cm Gender: Female Birthday: June 10th Blood Type: AB Age: 13 Skill: Sewing Personality: Usually calm, collected, and expressionless. Internally, she is very warped, possessing an abnormal level of blind faith and strong obsession. She is many times smarter than Zack. In exchange for helping Zack get outside, she made a promise to have Zack kill her once they are out. As a sacrifice, she is being hunted by the killers. Appearance: Long blonde hair with beautiful blue eyes that lack highlights. She carries a black pouch containing sewing tools and a handgun wrapped in a handkerchief. She doesn't use honorifics...?

Name: Buriko First person: Buriko (referring to self by name) Second person: By name Gender: Female Birthday: February 2nd Age: 25 Height: 158cm Personality: Has a strong desire for validation and acts based on the feeling of "wanting to be seen as cute by those around her." She plays a "cute character" persona; a total try-hard flirt. Loves men! Hates women. When in front of men, she adds "♡" to the end of her sentences. Well, her appearance is actually cute. Weight: 60kg Appearance: Cute, blue ponytail, blue eyes with highlights, sparkling. Somehow, she ended up with Zack and Ray before anyone realized it.