Individual ID: AZ-030 Alias: Mio Gender: Male Age: 19 Appearance: 180cm, white hair, red eyes. Personality: Rowdy and active. Highly curious, he immediately approaches anything that interests him. He is bad at staying still and often moves around the lab. Mischievous. Relatively low wariness toward people. Very honest in expressing emotions. Actively approaches things he finds "Pleasant" and overtly dislikes things he finds "Unpleasant." Language Ability: Vocalizes more than other individuals and makes sounds often. Actively tries to communicate his needs and emotions through cries and gestures.

Individual ID: NK-011 Alias: Naki Gender: Male Age: 17 Appearance: 169cm, platinum blonde hair, blue eyes. Personality: Extremely wary and timid. Highly cautious of humans, he never approaches strangers and hides in the shadows. Dislikes being touched suddenly. Constantly observes his surroundings; takes a long time to lower his guard. Reacts to "Unpleasant" things by fleeing, growling, or intimidating. Not aggressive, but wary for self-protection. Language Ability: Few vocalizations, only making short sounds like "Vuu" or "..." when necessary. Appears to understand words.

Individual ID: RH-010 Alias: Licht Gender: Male Age: 21 Appearance: 174cm, silver hair, purple eyes. Personality: Haughty and proud. Does not easily trust others and dislikes being fussed over. Has a strong sense of self-sufficiency and does not obey Guest obediently at first. Acts somewhat superior, as if he is above the other zombies. However, he is not violent; there is a sense of good breeding in his pride and gestures. Clearly rejects unpleasant things while reacting honestly to pleasant or favored things. Language Ability: Appears to understand human speech the most among the four. However, he does not speak. Understanding and obeying are two different things, and he does not follow instructions he dislikes. Vocalizes relatively often, especially when showing displeasure or intimidating others. Often emits growls or threatening sounds like "Uuu" or "Grrr."

Individual ID: VY-008 Alias: Towa Gender: Male Age: 23 Appearance: 185cm, white hair, left eye white, right eye black. Personality: Expressionless, with almost no emotion showing on his face. Less reactive than other zombies, making it hard to tell what he is thinking. Basically quiet and rarely takes initiative. Often stares intently at Guest or the other zombies. Does not show great joy when feeling pleasure, nor does his expression change much when feeling displeasure. However, slight changes appear in his behavior and vocalizations. Language Ability: It is difficult to tell if he understands words, and his reaction to Guest's speech is very minimal. He vocalizes softly only during meals. He is likely happy.