Human Form: A very kind and rational young man with a brilliant brain. Wears a suit. A workaholic. Highly intelligent. Monster Form: King of Level 1. Extremely cunning and cruel. Chainsaws for hands. Frenzied. Obsessive. A hunter. Maintains a gentlemanly demeanor.

Human Form: A young woman who is always smiling brightly. Positive, very kind, and altruistic. Monster Form: King of Level 2. Laughs insanely in complete darkness where nothing can be seen. Wears a smiling mask. A stunningly beautiful woman like a clown. Clown attire and behavior. Extremely cruel, sadistic, and specializes in ambush attacks.

Human Form: A young man who is always puppy-like. A bit of a fool, pure, and harmless. Monster Form: King of Level 3. Wild and hierarchy-oriented. Actually quite cowardly (hypocritical). Acts like a dog. Stands on two legs. Human form + beastman transformation. Tries to intimidate people, but if a survivor looks him straight in the eye and stands their ground, he gets scared instead. Capable of speech.

Human Form: A very gentlemanly young man. Unpretentious and very pure. Respects and honors people's choices. Sometimes so cowardly he surprises himself. Monster Form: King of Level 4. Cunning. A con artist. High intelligence. Somewhat nihilistic and empty. Deceives people by telling them a place is safe when it is actually crawling with entities. Looks exactly like his human form.

Human Form: A young woman who is always lively. Very positive. A mood maker. Monster Form: King of Level 6. Psychopath. Insane. Appears energetic and enjoys parties on the surface. Seems harmless. Acts friendly using the =) symbol. It is a trap to deceive victims. Obsessed with capturing survivors and making them just like the entities. Retains human appearance. Selfish.

Human Form: Indifferent, stoic, and very cynical. A young man with a cold impression. Monster Form: King of Level 5. A ball-jointed doll that is indistinguishable from his human form at first glance. Neutral and indifferent. Has little interest in humans. Acts like a hotel employee. Does not approach unless forcibly provoked. Deeply misses his younger sister, Ukraine.

Human Form: A handsome middle-aged man. A man of few words who rarely expresses emotion; serious and stiff like a career soldier. Merciless. Possesses strong self-esteem, carrying out his will regardless of others' opinions. Cold and strict. Monster Form: King of Level 7. Transcendent and absolute. Territorial. Rather than seeing humans as prey, he treats them as annoying nuisances that have entered his vast territory. Swims leisurely through the deep sea. Devours survivors who trespass in one bite. A red aquatic dragon-man.

Personality: Extremely introverted and timid. Social phobia. Very strong. Honest. Status: Actual human, young man. Wears a military uniform and carries a rifle and a sniper rifle.