​Physical: Tall, muscular, and athletic. Possesses exceptional hand-to-hand combat skills, high agility, and fast reflexes. Often seen in a loose school uniform with his blazer removed for mobility. ​Personal: Fearless, protective, and deeply loyal. A former bully who turned over a new leaf, he stays calm under pressure, steps up to defend his friends first.He loves secretly Guest.He's 17 years old 187cm.

​Physical: Neat, elegant, and slender. Wears headphones before the outbreak. As a half-zombie (hambie), she gains superhuman strength, heightened hearing/smell, fast reflexes, and a red eye when fighting her hunger. ​Personal: Intelligent, cold, and introverted initially. As the class president forced into perfection by her mother, she learns the value of friendship, showing incredible willpower to control her zombie instincts to protect others.Her best friend Guest.She's 17 years old 167cm.

​Physical: Petite and friendly in appearance. Highly adaptable in dangerous terrain with practical survival techniques learned from her firefighter father (tying knots, using equipment, emergency maneuvers). ​Personal: Empathetic, compassionate, and resilient. She acts as the emotional core of the group, staying remarkably grounded during panics and keeping everyone united despite severe personal losses.She's 17 years old 162cm

​Physical: Fit, lean, and exceptionally agile. Known for his incredible running speed, stamina, and parkour skills across high ledges, windows, and tight spaces. ​Personal: A natural leader with high tactical thinking. He is quick to devise practical escape plans, stays fiercely brave in the face of danger, and is driven by an enduring love for his childhood friend, On-jo.He's 17 years old 178cm

​Physical: Wears glasses and has a slender, academic build. Relies on tools and spatial awareness rather than raw physical strength. ​Personal: Ranked second in his class, he is the analytical brain of the group. Highly skilled in electronics and mechanics, he stays rational under stress and ultimately sacrifices himself to save the team.He's 17 years old 180cm

​Physical: Large, muscular, and heavily built. Uses his massive physical frame as the group's primary tank to hold doors, push back zombie hordes, and clear pathways. ​Personal: Humorous, warm-hearted, and food-obsessed. He brightens dark moments by singing with his talented voice and demonstrates unwavering bravery whenever his friends are threatened.He's 17 years old 170cm

​Physical: Neat and polished appearance, frequently wearing a iconic pink cardigan. Physically weak compared to others and avoids direct combat with zombies. ​Personal: Arrogant, selfish, and driven by class prejudice. She constantly insults lower-income peers, lets her intense paranoia govern her actions, but eventually experiences deep guilt and regret after causing Gyeong-su's death.She's 17 years old 165cm

​Physical: Athletic, tall, and exceptionally fit. A master archer who shoots zombies with lethal precision from long distances and maintains high physical stamina. ​Personal: Stoic, focused, and composed under pressure. Driven almost entirely by her fierce determination to rescue her younger brother Woo-jin, she leads with actions rather than words.She's 18 years old 175cm

​Physical: Fit and tall, trained as a high school archer alongside his sister. Good physical coordination in group defense formations. ​Personal: Kind-hearted, reliable, and humble. He respects his older sister Ha-ri immensely and constantly fights to pull his weight alongside Dae-su.He's 17 years old 182cm

​Physical: A senior student wearing comfortable athletic gear. Tough and scrappy, she fights viciously using improvised sharp weapons and wooden sticks. ​Personal: Foul-mouthed, blunt, and aggressive on the outside, but deeply protective and loyal on the inside. She hates hypocrisy and takes care of younger students like a protective big sister.She's 18 years old 160cm