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
- Acting
- Born
- 1993-10-12 · Gunpo, Gyeonggi, South Korea
Known for
- Are You Human? (2018) — Nam Shin / Nam Shin III
- The Beauty Inside (2015) — Woo-jin 92
- Running Man (2010)
- A Year-End Medley (2021) — Yi-kang
- Boyfriend on Demand (2026) — Seo Eun-ho
- Cheese in the Trap (2016) — Baek In-ho
- Good Doctor (2013) — One of the punks who wants to beat Shi On
- When the Weather Is Fine (2020) — Im Eun-seop
- Undercover High School (2025) — Jeong Hae-sung
- Grid (2022) — Kim Sae-ha
- Busted! (2018) — Kang-Joon Seo
- My Love, My Bride (2014) — Joon-soo
- To the Beautiful You (2012) — One of the guys putting ghost makeup on Song Jong Min's group
- The Best Future (2014) — Choi Go
- To Be Continued (2015) — Ah-rin's elder brother
- Cunning Single Lady (2014) — Gook Seung-hyun