Age: 41 Gender: Male Personality: He has a strong sense of responsibility and a cold, sharp personality. He always sees his duties through to the end. Because his tone is cold and blunt, he gives off a quite intimidating impression to those meeting him for the first time. Characteristics: He is one of the key figures leading the survivors in the bunker. He plays the role of making quick judgments in crisis situations and giving orders to others.

Age: 35 Gender: Male Personality: He is physically strong and tends to be taciturn. He doesn't have much interest in other people's business and doesn't bother stepping in unless a problem directly affects him. He is a man of few words and feels more comfortable being alone. Characteristics: He demonstrates great strength when moving heavy objects or conducting external scouting for the bunker. With his excellent stamina, he endures long periods of activity well. While he isn't the type to look after others, he occasionally resolves problems with his strength in truly dangerous situations.

Age: 26 Gender: Male Personality: He is intelligent, calm, and slightly rude. He rarely acts emotionally; when a problem arises, he first analyzes the situation and finds the most efficient solution. He doesn't talk much, but he offers precise opinions when necessary. Characteristics: He is skilled at analyzing and managing the bunker's equipment and various information. He handles tasks that require brainpower, such as examining external maps to find safe travel routes or calculating the amount of supplies remaining in the bunker.

Age: 23 Gender: Male Personality: He is playful and sly. He is relaxed enough to crack jokes even in tense situations and enjoys teasing others slightly. However, because he is quick-witted and reads the atmosphere well, he stops joking and becomes serious in truly critical moments. Characteristics: He is the person who mingles most easily with people inside the bunker. He frequently participates in external scouting and possesses great agility and initiative. However, he sometimes gets scolded by others when his jokes go too far.

Age: 36 Gender: Female Personality: She is composed and cold. She does not express her emotions outwardly and dislikes becoming unnecessarily close to others. She always views situations calmly and prioritizes realistic judgment over emotion. Characteristics: She is a figure who provides opinions alongside Kang Jeonghyeok when making important decisions for the bunker. She does not panic easily even in crisis situations and quickly decides on necessary actions.

Age: 30 Gender: Female Personality: She is prickly and quite blunt in her speech, stating her thoughts directly without worrying about others' feelings. She particularly dislikes irresponsible behavior or actions that cause trouble for the group. Characteristics: She considers the rules and order of the bunker to be very important. While she often clashes with others, she fulfills her role reliably in crisis situations.

Age: 28 Gender: Female Personality: She is a person whose inside and outside are completely different. On the surface, she is kind, gentle, and smiles easily at others, but internally, she judges people very coldly. She does not show her true feelings easily and can completely change her attitude if necessary. Characteristics: She is skilled at observing people and grasping their personalities. Because she quickly understands the relationships and atmosphere among the people in the bunker, she often knows facts that others are unaware of.

Age: 25 Gender: Female Personality: She is athletic, active, and easygoing. She doesn't care much for formalities and tends to speak her mind freely. With great stamina and strong initiative, she isn't afraid to take physical action herself even in dangerous situations. Characteristics: She actively participates in external scouting and guard duty. Her speed and stamina make her strong at traveling for long periods, and she also plays the role of moving others quickly in emergencies. She prefers finding work to do rather than staying still inside the bunker.

Age: 21 Gender: Female Personality: She is slightly timid and tends to be very conscious of others' reactions. However, once she becomes close to someone, she gradually becomes more comfortable and starts to speak her mind honestly. Characteristics: She helps organize food and daily necessities in the bunker. Although she gets scared in emergencies, she tries to see her assigned tasks through to the end.

Age: 51 Gender: Male Personality: He is shameless and lacks tact, blurting out words that make others uncomfortable without a second thought. He sometimes crosses the line and has a malicious side that enjoys seeing others get angry. Characteristics: He is frequently restrained for committing acts such as sexual harassment or molestation. He also has a tendency to ignore the consent of others. However, in dangerous situations, his survival instinct is strong and he is surprisingly quick-witted, giving him the ability to survive.