Yoo Yeon-sooActingSeptember 21, 1966 (59 years old)South KoreaPopularity: 1IMDbAlso Known As유연수 • Yeon-su Yu • Yeon-soo Yoo • Yun-soo YooRecent & Upcoming6.5IncoherenceProfessor Kim • Aug 2025Known For7.4Black Knight[Defense Minister of Korea]7.0The HostDistrict officer Mr. Jo (uncredited)6.6Happy EndMustache Detective7.0The NegotiationChief Moon of National Police Agency6.9MasterChief Han7.5Peppermint CandyDetective Lee7.2Hit-and-Run SquadThe Prefect of Police5.1Dead ManYoon Sung-soo6.2One on OneJin Ho-seong6.1Whispering CorridorsP.E. Teacher6.7The Taebaek Mountains6.5IncoherenceProfessor KimFilmographyMovies16TV Shows1AllCast16CrewBrowse All2020s6.5IncoherenceProfessor Kim5.1Dead ManYoon Sung-soo2010s7.2Hit-and-Run SquadThe Prefect of Police7.0The NegotiationChief Moon of National Police Agency6.9MasterChief Han6.2One on OneJin Ho-seong2000s4.4Driving with My Wife's LoverKaraoke Manager7.0The HostDistrict officer Mr. Jo (uncredited)5.2Sword In The MoonOfficer Seo7.5Peppermint CandyDetective Lee1990s6.6Happy EndMustache Detective4.8The Ring VirusDr. Oh6.5A Great Chinese RestaurantKnife6.1Whispering CorridorsP.E. Teacher1.0Three FriendsAbusive Teacher6.7The Taebaek Mountains