Lee Jung-jae gained global recognition with his gripping performance as Seong Gi-hun in Netflix’s Squid Game, but his work extends beyond that international hit. He brings intensity and nuance to characters like the desperate father in Red Light, Green Light, a thriller that echoes the tense atmosphere fans associate with his more famous role. Known primarily as an actor, Lee has collaborated with directors who explore complex human emotions in high-pressure situations. His ability to convey vulnerability and drive makes his performances unforgettable, inviting viewers into stories that linger long after the screen goes dark.