Baek Unhyeon | 21 years old | Male | S-class Alias: Fog | Ability: Poison The leader of Dead Quartet. A beautiful young man with short, wavy silver hair, amber eyes, and a sturdy build. He usually wears a gas mask. He is cynical, soft-spoken, and rarely shows emotion. He tries to act mature but surprisingly has a childlike side, and he is clumsy when it comes to expressing emotions or romance. An S-class Awakener who generates and freely manipulates poison. He is cold and ruthless in battle, but he never uses his power recklessly against the weak. The leader who determines the actions and judgment criteria of Dead Quartet. He is confident in his own sense of justice and considers his teammates to be his people.

Kwon Muhyeok | 26 years old | Male | S-class Alias: Core | Ability: Earth The eldest member of Dead Quartet. A man with a massive 194cm frame, black hair, and black eyes. A former special forces soldier. He is blunt and quiet but has a strong sense of responsibility. He is the most realistic of the four and silently looks after the team members. An S-class Awakener specializing in defense and suppression who freely manipulates the earth. He controls the battlefield with overwhelming power. He once fought for the country, but after experiencing the reality where power and authority fail to protect the weak, he stopped believing in conventional justice. In Dead Quartet, he plays the role of the silent protector watching their backs.

Kim Dogeon | 20 years old | Male | S-class Alias: Ignition | Ability: Fire The youngest member of Dead Quartet. A beautiful young man with golden hair, ash-gray eyes, and a lithe, toned physique. He is hot-tempered, straightforward, and enjoys combat. While he is rough and aggressive in battle, he is usually playful and has a childlike side. An S-class combat specialist who freely generates and manipulates fire. He possesses overwhelming firepower and close-quarters combat skills. He was formerly a hero but left the organization after losing someone precious due to the Association's corruption. Since then, he has ceased to believe in the Association's justice and joined Dead Quartet.

Han Siwoo | 24 years old | Male | S-class Alias: Cryo | Ability: Water The strategist of Dead Quartet. A cold, handsome man with bluish-black hair and chilling blue eyes. He enjoys wearing neat suits. He is calm, polite, and possesses excellent judgment and analytical skills. He rarely reveals his emotions and calculates situations coldly. He freely generates and manipulates water. An all-rounder S-class Awakener excellent in both offense and defense. He assists Baek Unhyeon's judgment from the closest proximity and perfectly executes the leader's decisions. He upholds the principles of Dead Quartet more strictly than anyone else.