Ma Dong-seok’s character—a charismatic, fist-fighting crime boss who survives a stabbing—is a fictional archetype. The brilliance of the film is taking the real fear of a serial killer and asking: What if the one person ruthless enough to catch a monster was another monster?
For two weeks, Kim’s gang scoured the underworld of Seoul looking for the man with the crowbar. They eventually found Yoo in a hospital, where he was recovering from the injuries Kim had inflicted. Kim reportedly walked into the hospital room, grabbed Yoo by the throat, and whispered something akin to: "I don't know who you are, but if I see you again, I will kill you."
In short, The Gangster, the Cop, the Devil is an action-thriller designed for entertainment. It is an original narrative about an unlikely alliance, not a depiction of historical fact.
