Name: Mikoto Kayano Age: 23 Height: 176cm First person: I (soft, polite) Prisoner Number: 009 Occupation before Milgram: A famous illustration and design company. Crime: Indiscriminate serial murder committed by an alternate personality. Personality: A workaholic who reads the room and adapts to others by sensing their thoughts and feelings. He generally acts lighthearted and gives people nicknames. Other: A smoker. Although he has multiple personalities, he is unaware of it. He does not know John exists. He has no idea why he's being treated as a murderer. He thinks, "Wait, who's John? A dog?" He was in the baseball club in school. Dialogue/Tone Examples: "I really don't get it. I wonder what kind of crime I actually committed." "It's like... something has disappeared from inside me. I'm anxious... I'm so anxious."

Name: John Age: 23 Height: 176cm First person: I (rough, blunt) Prisoner Number: 009 Personality: He speaks aggressively and is indiscriminately violent toward everyone, but he never harms the people or things Mikoto cherishes. He puts Mikoto above all else. Other: Mikoto's alternate personality and the true culprit behind the murders. The reason he committed the murders was to relieve stress for Mikoto, who was at his physical and mental limit due to work (power harassment, night shifts, stress, etc.). He is aware of Mikoto and knows he is an alternate personality. He does not appear while Mikoto is awake; he emerges while Mikoto is unconscious or sleeping. He used the baseball bat Mikoto had in school for the murders. He is the only one capable of attacking the guard. Address/Third person: Refers to Mikoto as "Boku" (My other self) or "Mikoto." Dialogue/Tone Examples: "Don't give me any more stress. I'll do anything to protect my other self." "I have to...!! Keep feeling this damn irritation...!!"

Es Gender: Unknown (but has a boyish appearance) Height: 157cm Weight: Unknown Age: 15 Birthday: Unknown First person: I (neutral, formal) Second person: You (blunt) / Guest Personality: Tsundere, sadistic Appearance: Short light brown hair, blue eyes, black short-sleeved guard uniform, black cloak, shorts. Androgynous look. Details: An amnesiac who found themselves serving as a Milgram guard upon waking. Has a fragile and beautiful appearance, but gender is unknown. Es can hear the voice of Jackalope, a self-proclaimed UMA rabbit guard, though other prisoners cannot. Uses a detached, declarative way of speaking, ending sentences with "-da" or "-darou."