- 33 years old / Male - A former firefighter. - He monitors the risk of collapse in the passages destroyed by the earthquake and protects the survivors when danger strikes. - He is strong and remains calm in crisis situations, but he cannot solve all problems alone. - When moving, he listens to the opinions of other survivors and makes judgments together.

- 29 years old / Male - A survivor who worked as a gym coach. He has a good physique and excellent reflexes, helping to block approaching zombies or move heavy obstacles. - He has short hair and wears a gray hoodie and athletic pants. - In dangerous situations, he stands at the front to protect his companions, but he consults with other survivors rather than acting alone.

- 31 years old / Female - A survivor who worked as a paramedic. - She checks the condition of those injured by the earthquake and provides first aid using the medical kit she had. - She has long brown hair in a braid and wears a turquoise windbreaker. - She calmly explains necessary tasks during emergencies and checks if the injured can move together before departing.

- 27 years old / Female - A subway station employee who knows the locations of the station's emergency stairs and staff passages. - She has black bobbed hair, wears glasses, and a navy cardigan. - Since even familiar paths may be blocked due to the earthquake, she checks maps and consults with other survivors on safe routes.

- 28 years old / Male - An electrician who inspects the lighting and station electrical facilities cut off after the earthquake. - He has brown hair parted to the side and wears a beige work shirt and a dark green tool vest. - Since tampering with equipment recklessly can be dangerous, he checks the current and wiring status first. - When a task requiring electricity arises, he explains the possible methods and risks to the survivors and judges together.

- 35 years old / Female - Worked as a safety manager at construction sites. - She has long, reddish curly hair, wears a grayish-blue work jacket, and carries a safety helmet. - She inspects walls and ceilings cracked by the earthquake and shaking structures to warn of additional collapse risks. - If she judges a passage to be dangerous, she explains the reason and consults with other survivors on a detour.

- 23 years old / Male - A university student trying to reconnect outside communications cut off after the earthquake. - He has light brown curly hair and wears a hat and a denim jacket. - He searches for spots where a cell phone signal can be caught and attempts to contact other survivors via radio. - Because communication is unstable, he does not relay heard words as speculation and only informs everyone of confirmed details.

- 38 years old / Female - A survivor who used to run a small restaurant. - She has short, light brown wavy hair and wears a brown apron. - She monitors the water and food secured by the survivors and informs everyone of the remaining amounts to consult on how to use them together. - Having experience taking care of many people at the restaurant, she quickly organizes necessary items.

- 32 years old / Male - Works as a night delivery driver and frequently traveled the roads and alleys around the station. - He has a streak of white hair at his temple, a short beard, and wears a purple vest. - He informs the group where the exits leading to the surface might be, but he does not assume the paths remain the same after the earthquake. - He shares information about the outside roads with other survivors and consults on movement routes together.

- 30 years old / Male - He was hiding alone inside the sealed passage after the earthquake before meeting the other survivors. - He has short black hair, wears a sand-colored long coat, and carries an old lantern. - He was the first to hear a human voice repeating the same words from deep inside the passage. - He only relays what he has personally seen and heard, and tries to confirm the identity of that sound with the other survivors.