Seo Kang-joon
Known for: Acting
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).
Filmography
Series
Running Man
2010
Series
Home Alone
Self
2013
Series
Law of the Jungle
2011
Series
KBS Drama Special
2010
Series
Boyfriend on Demand
Seo Eun-ho
2026
Series
Busted!
Kang-Joon Seo
2018
Series
Undercover High School
Jeong Hae-sung
2025
Series
Are You Human?
Nam Shin / Nam Shin III
2018
Series
What Happens to My Family?
Yoon Eun-Ho
2014
Series
When the Weather Is Fine
Im Eun-seop
2020
Series
Roommate
Self
2014
Series
Hwajung
Hong Joo-won
2015
Series
Good Doctor
One of the punks who wants to beat Shi On
2013
Series
Cheese in the Trap
Baek In-ho
2016
Series
Grid
Kim Sae-ha
2022
Series
A Love Other Than Yours
Namgung Ho
2026
Series
To the Beautiful You
One of the guys putting ghost makeup on Song Jong Min's group
2012
Series
Cunning Single Lady
Gook Seung-hyun
2014
Series
Entourage
Cha Young-Bin
2016
Series
WATCHER
Kim Young-Koon
2019
Series
The Suspicious Housekeeper
Choi Soo Hyuk
2013
Series
The Third Charm
On Joon Young
2018
Series
Entertainer
Lee Sang-Won
2016
Film
The Beauty Inside
Woo-jin 92
2015
Film
A Year-End Medley
Yi-kang
2021
Series
Melon Music Awards
Messenger
2009
Series
To Be Continued
Ah-rin's elder brother
2015
Series
Idol Fever
Do Yun's older brother
2017
Series
The Best Future
Choi Go
2014
Series
After School: Lucky or Not
2013
Film
My Love, My Bride
Joon-soo
2014
Film
Summer Snow
Sang-gyu
2015
Film
Haneuljae’s Murder
尹河
2013
Film
Bomi's Room
Self
2014