Acting

Seo Kang-joon

Born 1993-10-12 · Gunpo, Gyeonggi, South Korea26 series8 films

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).

Seo Kang-joon's films on Charmy Movies →

Acting

2026A Love Other Than YoursNamgung Ho14 ep.
2026Boyfriend on DemandSeo Eun-ho5 ep.
2025Undercover High SchoolJeong Hae-sung12 ep.
2022GridKim Sae-ha10 ep.
2020When the Weather Is FineIm Eun-seop16 ep.
2019WATCHERKim Young-Koon16 ep.
2018The Third CharmOn Joon Young16 ep.
2018Are You Human?Nam Shin / Nam Shin III36 ep.
2018Busted!Kang-Joon Seo1 ep.
2017Idol FeverDo Yun's older brother10 ep.
2016EntourageCha Young-Bin16 ep.
2016EntertainerLee Sang-Won2 ep.
2016Cheese in the TrapBaek In-ho16 ep.
2015To Be ContinuedAh-rin's elder brother12 ep.
2015HwajungHong Joo-won50 ep.
2014The Best FutureChoi Go5 ep.
2014What Happens to My Family?Yoon Eun-Ho53 ep.
2014RoommateSelf46 ep.
2014Cunning Single LadyGook Seung-hyun16 ep.
2013The Suspicious HousekeeperChoi Soo Hyuk20 ep.
2013After School: Lucky or Not24 ep.
2013Good DoctorOne of the punks who wants to beat Shi On1 ep.
2013Home AloneSelf1 ep.
2012To the Beautiful YouOne of the guys putting ghost makeup on Song Jong Min's group3 ep.
2011Law of the Jungle9 ep.
2009Melon Music AwardsMessenger1 ep.

Guest appearances

2026Boyfriend on DemandSeo Eun-ho5 ep.
2018Busted!Kang-Joon Seo1 ep.
2016EntertainerLee Sang-Won2 ep.
2016Law of the Jungle9 ep.
2016Home AloneSelf1 ep.
2015Melon Music AwardsMessenger1 ep.
2015Running Man1 ep.
2014KBS Drama Special1 ep.
2013Good DoctorOne of the punks who wants to beat Shi On1 ep.
2012To the Beautiful YouOne of the guys putting ghost makeup on Song Jong Min's group3 ep.

Also known as: 서강준 · Seo Kang-jun · Kang-joon Seo · Kang-jun Seo · 이승환 · Lee Seung-hwan · 徐康俊 · سو کانگ جون