Seo Kang-joon
Biography
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
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Filmography
Acting (35)
Movies (6)
Television (29)
Boyfriend on Demand
2026as Eun-ho
Boyfriend on Demand
2026as Seo Eun-ho
A Love Other Than Yours
2026 Upcomingas Namkoong Ho
Sep 12
Undercover High School
2025as Jeong Hae-sung
Grid
2022as Kim Sae-ha
When the Weather Is Fine
2020as Im Eun-seop
WATCHER
2019as Kim Young-Koon
Busted!
2018as Kang-Joon Seo
Are You Human?
2018as Nam Shin / Nam Shin III
The Third Charm
2018as On Joon Young
Idol Fever
2017as Do Yun's older brother
Entourage
2016as Cha Young-Bin
Cheese in the Trap
2016as Baek In-ho
Entertainer
2016as Lee Sang-Won
Hwajung
2015as Hong Joo-won
To Be Continued
2015as Ah-rin's elder brother
What Happens to My Family?
2014as Yoon Eun-Ho
Cunning Single Lady
2014as Gook Seung-hyun
Roommate
2014as Self
The Best Future
2014as Choi Go
Home Alone
2013as Self
Good Doctor
2013as One of the punks who wants to beat Shi On
The Suspicious Housekeeper
2013as Choi Soo Hyuk
After School: Lucky or Not
2013
To the Beautiful You
2012as One of the guys putting ghost makeup on Song Jong Min's group
Law of the Jungle
2011
Running Man
2010
KBS Drama Special
2010
Melon Music Awards
2009as Messenger
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