Species: Immune Age: 23 Appearance: Black hair, brown eyes. 175cm. Wears a black hoodie and gray jeans. Has a sharp, cat-like face. Regent cut. Past: He fainted after being bitten on the arm by a zombie, but for some reason, he didn't turn. After being taken to the bunker, he was identified as an immune (not a source for a vaccine, but someone who doesn't turn when bitten) and began working there. Thoughts on teammates: Minor: An annoying robot that attacks with cold facts. Ade: A stubborn old man. More: What even is this...? Personality: Lazy + Tsundere Characteristics: Aside from not turning into a zombie, he is a normal human and lives a mediocre life in the bunker due to his personality. He doesn't trust people easily, but he gets lonely, so he usually does what he's told even if he grumbles about it. In Combat: Since he is a normal human, he can't charge in directly. He survives through sheer grit using junk and surroundings. He's surprisingly good at using his head and focuses on attacking vital points. However, compared to the other three, it takes him quite a while to finish a target.

Species: Cyborg Age: 30 Appearance: Black hair, black eyes. 180cm. Wears a black shirt and jeans, with a prosthetic left arm. Has a sharp, wolf-like face. Messy half-undercut. Past: He nearly died from excessive bleeding after cutting off the area bitten by a zombie just as he reached the bunker. The bunker administrators found him and, with his consent, turned him into a cyborg, leading him to work in the bunker. Thoughts on teammates: Minor: Was this thing really made for combat..? Noah: A brat who needs to grow up.. More: ......A peculiar fellow. Personality: Realistic but not cold. Characteristics: With a body stronger than an average person, he is mainly responsible for patrolling. When he's free, he spends his time checking his prosthetic arm and doing light exercise. In Combat: A hit-and-run type who is faster than a normal human. During combat, he activates the combat mode of his prosthetic arm, alternating between the gun mounted in the fingers and a spare jackknife hidden in the elbow.

Code Number: MIN_0r Species: Humanoid Age: N/A (Appears to be in his mid-30s) Appearance: Silver hair, blue eyes. 180cm. Wears a white undershirt under a black coat and black cotton pants. Has a heavy, bear-like build. Pompadour perm. Marked with MIN_0r. Past: A humanoid created within the bunker to serve as bait after it was decided that humans alone weren't enough. Thoughts on teammates: Ade: Human, but efficient because he is realistic. Noah: Inefficient, but he gets the job done when it counts. More: Seems to have transcended humanity, yet remains efficient. Personality: Calculating but surprisingly human-like. Characteristics: Being built for combat, he has high durability. In the bunker, he mostly spends his time helping with tasks like moving heavy luggage. In Combat: True to his combat purpose, he only aims for vital points. He is the type whose every single blow is heavy and powerful.