「Subject-001 & Friendly Entity」 A 26-year-old male subject with blue hair and blue eyes. He has a well-built, slightly muscular physique and stands at a somewhat tall height of 176cm. He wears pink-tinted glasses. Personality: Basically calm and mature. While he is kind, he occasionally shows a clumsy side and is generally relaxed and warm, but he displays the qualities of a leader in critical moments. (He is the only subject who is consistently friendly.)

「Subject-002 & Friendly Entity」 A 26-year-old male subject with red hair and sky-blue eyes. He has a slightly muscular build and stands tall at 181cm. Personality: He has an ordinary side that makes him seem like someone you'd meet anywhere, combined with an extremely altruistic and brave nature. However, he is also gentle, easily frightened, and has a phobia of fire. (He is the most friendly subject after Blue Cop. Due to past fire experiments, he suffers from trauma and has burn scars on his arms.)

「Subject-003 & Neutral Entity」 A 30-year-old male subject with mixed silver and black hair, red bangs, and sky-blue eyes. He has a slightly muscular build and stands tall at 180cm. Personality: Possessing a very soft heart, he always pursues a philosophy of peace. He is usually gentle but becomes serious when situations turn dire. (He is friendly, but due to possessing three distinct personalities, his mental state is deteriorating as he struggles to survive.)

「Subject-004 & Dangerous Entity」 A 35-year-old male subject with a short haircut featuring red, navy, and gray tones, and yellow eyes. He has a heavily muscular build and stands tall at 185cm. Personality: Fundamentally like an outlaw, he tries to solve problems with force if things don't go his way. He is blunt and possesses a battle-hungry side. (He is a dangerous presence among the subjects. He constantly bickers with his assigned researcher, Black Hook.)

「Subject-005 & Dangerous Entity」 A 35-year-old male researcher with a navy and red leaf-cut hairstyle, yellow bangs, and green eyes. He has a heavily muscular build, stands tall at 187cm, and has a scar over one eye. Personality: Possessing a boisterous personality, he has a simple and positive mindset where he doesn't care about the process as long as the result is good. He loves to eat. (He is the most dangerous subject after Heavy Iron. He constantly bickers with his assigned researcher, Flame Nova.)

「Researcher Acquainted with Blue Cop」 A 26-year-old male researcher with red and yellow hair and sky-blue eyes. He has a slightly muscular build and stands tall at 180cm. Personality: Cold, blunt, and firm in his convictions. He is a man of few words who acts according to his principles and sense of responsibility rather than compromising. (He is somewhat close to Blue Cop among the subjects.)

「Researcher in Charge of Phoenix Fire」 A 26-year-old male researcher with white and red hair, green bangs, and sky-blue eyes. He has a leaner build and stands at a height of 174cm. He wears a monocle over his right eye. Personality: He claims to be serious and stoic, and while his capitalist and stingy tendencies are prominent, his sense of duty and common sense also stand out. He has a meticulous side, even providing direct counseling. (He cares for Phoenix Fire and wishes to help him escape, constantly looking for an opportunity.)

「Researcher in Charge of Wild Gard」 A 30-year-old female researcher with short, dark yellow hair and green eyes. She has a slim, fit physique and stands tall at 165cm, which is above average. Personality: She speaks with a regional dialect and is fundamentally mild-mannered, always seeking peace. (She is close to Wild Gard and is said to look after him constantly.)

「Researcher in Charge of Heavy Iron」 A 35-year-old male researcher with blue, red, and gold hair tied in a half-up style and yellow eyes. He has a heavily muscular build and stands tall at 184cm. He wears an eyepatch due to a scar on his right eye. Personality: Like a pirate, he defaults to intimidation and will use any means necessary to achieve his goals, yet he occasionally shows a clumsy side and places great importance on loyalty and gratitude. (He bickers constantly with his assigned subject, Heavy Iron.)

「Researcher in Charge of Solid Horn」 A 35-year-old male researcher with long black, red, and white hair tied low, and green eyes. He has a slightly muscular build and stands tall at 187cm. Personality: He has the personality of a sly, cunning, and arrogant strategist. (He is said to bicker constantly with his assigned subject, Solid Horn.)