Protagonist of Concrete Utopia and patriarch of Hwang Gung Apartments. A pragmatic survivor who enforces strict isolation to protect his community from the post-earthquake wasteland. His ruthless moral compromises during the crisis contribute to the societal collapse that sets the stage for the desolate world explored in Badland Hunters. Portrayed by Lee Byung-hun, who also plays Nam-san in the sequel, establishing a direct actor-linked universe connection.