Seo Kang-joon
Acting
Born: October 12, 1993 (age 32) · Gunpo, Gyeonggi, South Korea
Highest Rated
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
Are You Human?
2018
The Beauty Inside
2015
A Year-End Medley
2021
Boyfriend on Demand
2026
Cheese in the Trap
2016
When the Weather Is Fine
2020
Good Doctor
2013
Grid
2022
Undercover High School
2025
Busted!
2018
My Love, My Bride
2014
To the Beautiful You
2012
Photos (9)
Movies (5)
TV Shows (25)
Law of the Jungle
9 eps
Running Man
1 eps
KBS Drama Special
1 eps
Boyfriend on Demand
Seo Eun-ho · 5 eps
Busted!
Kang-Joon Seo · 1 eps
Undercover High School
Jeong Hae-sung · 12 eps
Good Doctor
One of the punks who wants to beat Shi On · 1 eps
Are You Human?
Nam Shin / Nam Shin III · 36 eps
When the Weather Is Fine
Im Eun-seop · 16 eps
The Third Charm
On Joon Young · 16 eps
Cunning Single Lady
Gook Seung-hyun · 16 eps
Hwajung
Hong Joo-won · 50 eps
The Suspicious Housekeeper
Choi Soo Hyuk · 20 eps
Grid
Kim Sae-ha · 10 eps
What Happens to My Family?
Yoon Eun-Ho · 53 eps
Cheese in the Trap
Baek In-ho · 16 eps
Entertainer
Lee Sang-Won · 2 eps
WATCHER
Kim Young-Koon · 16 eps
Entourage
Cha Young-Bin · 16 eps
To the Beautiful You
One of the guys putting ghost makeup on Song Jong Min's group · 3 eps
Melon Music Awards
Messenger · 1 eps
To Be Continued
Ah-rin's elder brother · 12 eps
Idol Fever
Do Yun's older brother · 10 eps
After School: Lucky or Not
24 eps
The Best Future
Choi Go · 5 eps
