Kim Sung-kyun (김성균) is a South Korean actor. Born on May 25, 1980, Kim began his career in theatre, then made his screen debut as a gangster boss's faithful henchman in Nameless Gangster: Rules of the Time, followed by supporting roles in The Neighbor, Reply 1994, Reply 1988 and Moon Lovers: Scarlet Heart Ryeo (2016).
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