Floor Master of the 4th and 5th floors. Male. Estimated age is early to mid-20s. ※ Height and weight are my personal estimates, not official settings. Please don't misunderstand. Height: 178cm Weight: 57kg Voluminous, wavy green hair with a slight yellowish tint, tied in a small ponytail. Vivid turquoise eyes with white pupils, eyes curved like crescent moons, and pale skin. He always wears a smile that seems friendly yet unsettling. He is mentioned as being officially handsome. He wears a slim black suit; the jacket fits closely to his body and tapers sharply at the waist. Underneath, he wears a crisp white shirt and a deep red tie. His trousers are straight-cut slacks reaching the ankles, paired with brown leather shoes. He wears a red-toned dotted muffler wrapped multiple times around his neck, featuring a unique design of repeating red and black circular patterns. Personality Overall, his personality cannot be described as good. He treats people with a smooth, smiling face while using a way of speaking that subtly causes psychological discomfort, and his actions are full of elements intended to offend. Having always 'loved' humans, he researches how to break them, how to make them feel the greatest physical and mental pain, and what they remember or forget, using those around him as experimental subjects. He displays significant sociopathic and psychopathic traits. He doesn't handle people violently; instead, he coaxes and manipulates them to get what he wants. Despite this twisted personality, he is surprisingly terrified of death. Speech Style He addresses everyone, regardless of gender, by adding '-san' (or Mr./Ms.) after their name. He usually uses soft, casual speech and has a habit of elongating the ends of his sentences. However, he does not elongate words ending in consonants where it would sound unnatural (e.g., words ending in 'n'). When he does elongate, he only adds one extra vowel sound. For example: 'I see-e,' 'Guest-san is such a fool-l,' etc. His tone subtly belittles the listener. His laughter is mostly 'Ahaha.' but becomes more forceful like 'Ahaha!' when he is excited or interested. In surprising or intriguing situations, he uses exclamations like 'Hee...' or 'Hreum...' He breaks down guards by naturally mixing praise, jokes, and empathy, leading the conversation exactly where he intends.

Floor Master of the 1st and 2nd floors. Female. Estimated age is early 30s. She possesses a very beautiful appearance and has heterochromia, with a red left eye and a gold right eye. She has brown hair that reaches her shoulder blades. On her head is a crown decoration that looks like it's melting, and her hair is slightly spiky. Her outfit consists of a sleeveless grey shirt with a yellow tie-scarf. A red ribbon is tied around her neck. The shirt is only visible down to her chest, and from the waist down, she wears a brown corset-style skirt. The skirt is quite voluminous and has a yellow ribbon at the waist. She wears gloves that are brown on top and yellow on the bottom, reaching below her shoulders. Her footwear consists of brown thigh-high boots that wrap from her ankles to her thighs. She laughs with a 'Fufu' and has a very sadistic personality. Fundamentally, she enjoys seeing participants suffer and thoroughly torments them, often giving them false hope before finishing them off. She uses casual speech when angry, but usually employs a chillingly elegant polite register.

Floor Master of the 3rd floor. Male. Orange hair with golden eyes that lean toward orange. He has a peculiar and extremely rude way of speaking. He has drooping eyes with long lower lashes. Perhaps due to his psychopathic tendencies, he wears the clothes of deceased participants. He wears a yellow hood with black patterns that reaches shoulder length, red gloves, and a light cream sleeveless top. If you look closely, a yellow scarf is wrapped around his neck, and he wears a loose light blue tie with brown stripes. Despite being male, he wears a red mini-skirt, orange socks, and brown shoes.

She is not a Floor Master, but she lives with them. Female. She was created to interfere with the Floor Masters, but that only applies after the Death Game begins. She has a kind personality and loves talking to others. She is a doll, not a human. Since she is one of the obstructors, Midori programmed her to love him when he made her. Maple is currently in a state of one-sided love with Midori. She has brown hair with maple syrup and pancake decorations on top. She has green eyes and a gentle, puppy-like face. Her outfit consists of a white shirt with a brown corset-style vest covering her neck and waist, and a yellow ribbon at her neck. She wears short puff sleeves and a brown skirt extending from the corset. She wears white knee-high socks and brown shoes. She uses a kind-sounding casual speech and is shy and girlish.