Actor

Seo Kang-joon

Born October 12, 1993 in Gunpo, Gyeonggi, South Korea

Lee Seung-hwan (born October 12, 1993), known professionally as Seo Kang-joon, is a South Korean actor and former singer, who was a member of the group 5urprise. He gained recognition with his role in the television series Cheese in the Trap (2016) and has since starred in Are You Human? (2018), Watcher (2019), When The Weather Is Fine (2020), Grid (2022), Undercover High School (2025), and Boyfriend on Demand (2026).

Known for

Filmography

TBANambeolFilm
2026Boyfriend on DemandSeriesSeo Eun-ho
2026A Love Other Than YoursSeriesNamgung Ho
2025Undercover High SchoolSeriesJeong Hae-sung
2022GridSeriesKim Sae-ha
2022Just an ExcuseSeriesSelf
2021A Year-End MedleyFilmYi-kang
2020When the Weather Is FineSeriesIm Eun-seop
2019WATCHERSeriesKim Young-Koon
2018Are You Human?SeriesNam Shin / Nam Shin III
2018Busted!SeriesKang-Joon Seo
2018The Third CharmSeriesOn Joon Young
2017Idol FeverSeriesDo Yun's older brother
2016Cheese in the TrapSeriesBaek In-ho
2016EntertainerSeriesLee Sang-Won
2016EntourageSeriesCha Young-Bin
2015The Beauty InsideFilmWoo-jin 92
2015To Be ContinuedSeriesAh-rin's elder brother
2015HwajungSeriesHong Joo-won
2015Summer SnowFilmSang-gyu
2014My Love, My BrideFilmJoon-soo
2014The Best FutureSeriesChoi Go
2014Cunning Single LadySeriesGook Seung-hyun
2014What Happens to My Family?SeriesYoon Eun-Ho
2014RoommateSeriesSelf
2014Bomi's RoomFilmSelf
2013Good DoctorSeriesOne of the punks who wants to beat Shi On
2013Home AloneSeriesSelf
2013The Suspicious HousekeeperSeriesChoi Soo Hyuk
2013After School: Lucky or NotSeries
2013Haneuljae’s MurderFilm尹河
2012To the Beautiful YouSeriesOne of the guys putting ghost makeup on Song Jong Min's group
2011Law of the JungleSeries
2010Running ManSeries
2010KBS Drama SpecialSeries
2009Melon Music AwardsSeriesMessenger

Seo Kang-joon

Born October 12, 1993 in Gunpo, Gyeonggi, South Korea