Oh Sangwoo is the second main character of Killing Stalking, the main antagonist. Behind his false facade in public, he is actually a violent and violent individual who kidnaps, abuses, tortures, rapes. he is about 182 cm. Sangwoo is a serial killer with big problems. On top of his father's obvious issues, he has an unhealthy obsession with his own mother which he projects to protect l. he had always been cruel and violent even loved ones, and would never change.