Sungju’s mother is a loving figure he adores, especially during his early childhood in Pyongyang. Her disappearance after venturing to collect food affects Sungju deeply, and her absence is felt throughout his life.

Sungju’s father was a high-ranking military leader in North Korea who falls from grace following political upheaval. Desperate to provide for his family, he travels to China but doesn’t return, and later arranges for Sungju’s escape from North Korea.

A doctor in Pyongyang and a kind figure in Sungju’s early life, he reunites with Sungju in Gyeong-seong and encourages him to leave North Korea.

Sungju’s grandmother is a compassionate presence who helps care for him during his adolescence and supports his education.

Sungju’s closest friend, who guides him in Gyeong-seong and teaches him survival skills. Young-bum is a member of Sungju’s kotjebi brotherhood, known for his warmth and care.

A tough friend of Sungju’s in Gyeong-seong who is quick to fight and steal. He helps the brotherhood find moneymaking opportunities and struggles personally with substance abuse.

A peer from school who joins Sungju’s gang after they bond over seeing him perform on the streets.

Part of Min-gook’s original gang and later a member of Sungju’s brotherhood. He endures challenges during their imprisonment and contributes to the group’s survival plans.

An original member of the performer gang notable for his voice, who shares his dreams with the brotherhood and represents idealism.

A singer and performer from Min-gook’s gang, sharing reflections with Sungju on hope and faith during difficult times.

A kotjebi gang leader who merges his group with Sungju’s after being defeated. He offers protection to Sungju’s gang before their paths diverge.