Acting
Seo Kang-joon
Acting · Born 1993-10-12 · 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).
Credits · 32
A Love Other Than Yours
2026 · Namgung Ho
Boyfriend on Demand
2026 · Seo Eun-ho
Undercover High School
2025 · Jeong Hae-sung
Grid
2022 · Kim Sae-ha
FilmA Year-End Medley
2021 · Yi-kang
When the Weather Is Fine
2020 · Im Eun-seop
WATCHER
2019 · Kim Young-Koon
The Third Charm
2018 · On Joon Young
Are You Human?
2018 · Nam Shin / Nam Shin III
Busted!
2018 · Kang-Joon Seo
Idol Fever
2017 · Do Yun's older brother
Entourage
2016 · Cha Young-Bin
Entertainer
2016 · Lee Sang-Won
Cheese in the Trap
2016 · Baek In-ho
FilmSummer Snow
2015 · Sang-gyu
FilmThe Beauty Inside
2015 · Woo-jin 92
To Be Continued
2015 · Ah-rin's elder brother
Hwajung
2015 · Hong Joo-won
The Best Future
2014 · Choi Go
FilmMy Love, My Bride
2014 · Joon-soo
What Happens to My Family?
2014 · Yoon Eun-Ho
Roommate
2014 · Self
Cunning Single Lady
2014 · Gook Seung-hyun
The Suspicious Housekeeper
2013 · Choi Soo Hyuk
After School: Lucky or Not
2013
Good Doctor
2013 · One of the punks who wants to beat Shi On
Home Alone
2013 · Self
To the Beautiful You
2012 · 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
2009 · Messenger