Acting
Seo Kang-joon
Born 1993-10-12
Gunpo, Gyeonggi, South Korea
Department: Acting
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
Prominent works featuring Seo Kang-joon
TV
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Home Alone
2013
TMDB3.8
TV
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Law of the Jungle
2011
TMDB2.9
TV
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Running Man
2010
TMDB4.1
TV
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A Love Other Than Yours
2026
TMDB4.0
TV
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Are You Human?
2018
TMDB4.0
TV
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KBS Drama Special
2010
TMDB3.7
Movie
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The Beauty Inside
2015
TMDB3.9
TV
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Boyfriend on Demand
2026
TMDB4.2
Movie
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A Year-End Medley
2021
TMDB3.6
TV
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Undercover High School
2025
TMDB4.0
Filmography & Credits
Complete career catalog (34 titles)
| Poster | Title | Character / Role | Type | Year |
|---|---|---|---|---|
 | A Love Other Than Yours | Namgung Ho | TV Series | 2026 |
 | Boyfriend on Demand | Seo Eun-ho | TV Series | 2026 |
 | Undercover High School | Jeong Hae-sung | TV Series | 2025 |
 | Grid | Kim Sae-ha | TV Series | 2022 |
 | A Year-End Medley | Yi-kang | Movie | 2021 |
 | When the Weather Is Fine | Im Eun-seop | TV Series | 2020 |
 | WATCHER | Kim Young-Koon | TV Series | 2019 |
 | The Third Charm | On Joon Young | TV Series | 2018 |
 | Are You Human? | Nam Shin / Nam Shin III | TV Series | 2018 |
 | Busted! | Kang-Joon Seo | TV Series | 2018 |
 | Idol Fever | Do Yun's older brother | TV Series | 2017 |
 | Entourage | Cha Young-Bin | TV Series | 2016 |
 | Entertainer | Lee Sang-Won | TV Series | 2016 |
 | Cheese in the Trap | Baek In-ho | TV Series | 2016 |
 | Summer Snow | Sang-gyu | Movie | 2015 |
 | The Beauty Inside | Woo-jin 92 | Movie | 2015 |
 | To Be Continued | Ah-rin's elder brother | TV Series | 2015 |
 | Hwajung | Hong Joo-won | TV Series | 2015 |
 | The Best Future | Choi Go | TV Series | 2014 |
 | My Love, My Bride | Joon-soo | Movie | 2014 |
 | Bomi's Room | Self | Movie | 2014 |
 | What Happens to My Family? | Yoon Eun-Ho | TV Series | 2014 |
 | Roommate | Self | TV Series | 2014 |
 | Cunning Single Lady | Gook Seung-hyun | TV Series | 2014 |
 | Haneuljae’s Murder | 尹河 | Movie | 2013 |
 | The Suspicious Housekeeper | Choi Soo Hyuk | TV Series | 2013 |
 | After School: Lucky or Not | Self / Appearance | TV Series | 2013 |
 | Good Doctor | One of the punks who wants to beat Shi On | TV Series | 2013 |
 | Home Alone | Self | TV Series | 2013 |
 | To the Beautiful You | One of the guys putting ghost makeup on Song Jong Min's group | TV Series | 2012 |
 | Law of the Jungle | Self / Appearance | TV Series | 2011 |
 | Running Man | Self / Appearance | TV Series | 2010 |
 | KBS Drama Special | Self / Appearance | TV Series | 2010 |
 | Melon Music Awards | Messenger | TV Series | 2009 |