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