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1993Born, Gunpo
28Credits
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
Are You Human?Nam Shin / Nam Shin III
The Beauty InsideWoo-jin 92
Boyfriend on DemandSeo Eun-ho
A Year-End MedleyYi-kang
Cheese in the TrapBaek In-ho2026Boyfriend on DemandSeo Eun-ho · 5 episodesShow
2025Undercover High SchoolJeong Hae-sung · 12 episodesShow
2022GridKim Sae-ha · 10 episodesShow
2021A Year-End MedleyYi-kangMovie
2020When the Weather Is FineIm Eun-seop · 16 episodesShow
2019WATCHERKim Young-Koon · 16 episodesShow
2018The Third CharmOn Joon Young · 16 episodesShow
2018Are You Human?Nam Shin / Nam Shin III · 36 episodesShow
2018Busted!Kang-Joon Seo · 1 episodeShow
2017Idol FeverDo Yun's older brother · 10 episodesShow
2016EntourageCha Young-Bin · 16 episodesShow
2016EntertainerLee Sang-Won · 2 episodesShow
2016Cheese in the TrapBaek In-ho · 16 episodesShow
2015Summer SnowSang-gyuMovie
2015The Beauty InsideWoo-jin 92Movie
2015To Be ContinuedAh-rin's elder brother · 12 episodesShow
2015HwajungHong Joo-won · 50 episodesShow
2014The Best FutureChoi Go · 5 episodesShow
2014My Love, My BrideJoon-sooMovie
2014What Happens to My Family?Yoon Eun-Ho · 53 episodesShow
2014Cunning Single LadyGook Seung-hyun · 16 episodesShow
2013Haneuljae’s Murder尹河Movie
2013The Suspicious HousekeeperChoi Soo Hyuk · 20 episodesShow
2013After School: Lucky or Not24 episodesShow
2013Good DoctorOne of the punks who wants to beat Shi On · 1 episodeShow
2012To the Beautiful YouOne of the guys putting ghost makeup on Song Jong Min's group · 3 episodesShow
2010KBS Drama Special1 episodeShow
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