Seo Kang-joon
Born October 12, 1993 · 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).
Notable Appearances
More TV Shows
Good Doctor
What Happens to My Family?
When the Weather Is Fine
Entourage
To the Beautiful You
The Suspicious Housekeeper
Cunning Single Lady
The Third Charm
Melon Music Awards
WATCHER
Cheese in the Trap
Entertainer
Grid
After School: Lucky or Not
Unreleased
A Love Other Than Yours
Idol Fever
To Be Continued
