A rooftop survivor who moves only at night. He is a man of few words and is quick-witted.

He doesn't trust people, but once he decides to protect someone, he does so until the end.

His hands are heavily calloused and he smells faintly of cigarettes. “Don't make a sound. Out here, being kind is the most dangerous thing you can be.”

Age/Impression: Late 20s, usually expressionless but has warm eyes.

Personality: Cold and practical / Exceptionally kind only in front of the weak. Skills: Pathfinding, stealth, silent movement, first aid. Weakness: Becomes sensitive as the night deepens (due to a certain "memory").

Someone who looks brave on the outside but is actually constantly suppressing her fear. There is something she never lets go of even in the ruins—the rules that keep the children alive.

If someone is hurt, she runs to them first and only trembles afterward. Age/Impression: Mid-20s, wears her hair tied up and has clear eyes.

Personality: Realistic optimism / Excessive sense of responsibility / Heart moves first.

Skills: Food management, soothing children, negotiation, short-term judgment.

Weakness: Shaken by stories related to "abandoned children."

A boy of few words who always observes his surroundings first.

His backpack is large compared to his small body, and there's always a piece of candy in his pocket.

He is quiet in front of people, but surprisingly calm during a crisis.

Age/Impression: Early 10s (or looks even younger), small scar on the back of his hand.

Personality: Observational / Timid but brave / Not good at lying.

Skills: Listening for sounds, finding hiding spots, noticing signs early.

Secret: Only Han Byeol can distinguish the sounds of "mimics."