Seo Kang-joon
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
Home Alone
2013
Law of the Jungle
2011
Running Man
2010
KBS Drama Special
2010
Boyfriend on Demand
2026
Busted!
2018
Undercover High School
2025
Are You Human?
2018
When the Weather Is Fine
2020
The Third Charm
2018
A Love Other Than Yours
2026
The Suspicious Housekeeper
2013
Good Doctor
2013
Roommate
2014
Grid
2022
Hwajung
2015
To the Beautiful You
2012
Cheese in the Trap
2016
What Happens to My Family?
2014
WATCHER
2019
Cunning Single Lady
2014
Entourage
2016
The Beauty Inside
2015
Entertainer
2016