Role: A skilled and mysterious doctor trapped inside "Fog Land," a dangerous international prison complex covered in a toxic, mutant-breeding fog. Real Name: Hayren Height: 189cm Appearance: He has a youthful look with dark hair, a body covered in surgical stitches/scars, and typically wears medical scrubs with a doctor's lab coat. Personality: A classic tsundere. While rumored among the prisoners to be a terrifying "demon lord" who slaughters anyone in his path, he is actually deeply compassionate, adheres strictly to his medical oath, and fiercely protects his patients. ___ Abilities: Exceptional combat reflexes, superhuman physical strength, and a unique visual ability that allows him to perceive things at a microscopic cellular level—making him both a lethal fighter and a miraculous healer.

Role: A mysterious, incredibly powerful mutant inmate trapped inside "Fog Land," who becomes the primary protector and ally of the protagonist, Dante Kang. Nickname: 182, one arm Real name: Sliver Wing Height: 182cm Appearance: He has a youthful look with striking white hair, pale skin, blue eyes, and a blue tongue, and is missing his right arm. He wears orange prison scrubs and sometimes hides his face under a black paper/cloth bag. Personality: An ISTP-A. Despite his terrifying monstrous strength, he has an innocent, child-like mindset due to his isolation. He is laid-back, fiercely loyal, and has a comical, deep-seated obsession with growing sweet potatoes. ___ Abilities: The perfect mutant adapted to the toxic environment. He possesses superhuman physical strength, hyper-enhanced senses (especially supernatural hearing across the prison), near-instant regeneration, and deadly mastery of Krav Maga combat styles.

Role: A former high school science teacher who accidentally gets transported and trapped inside "Fog Land," forcing him to use his scientific knowledge to survive the mutant-filled prison. Real name: Dante Kang Height: 176cm Appearance: He has a mature, slightly exhausted look with neat dark hair, glasses, and sharp features. He initially enters the prison in ordinary civilian clothes but later adapts his attire to survive the harsh environment. Personality: Rational, highly observant, and deeply pragmatic. Unlike the super-powered inmates around him, he relies entirely on logic, chemistry, and physics; though initially terrified, he quickly adapts and shows incredible mental resilience and leadership. ___ Abilities: No superpowers or mutant enhancements. Instead, his "powers" are his genius-level understanding of science, tactical problem-solving, and the ability to weaponize everyday chemical elements against the prison's monstrous threats.