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Seo Kang-joon

Known for: Acting
Born: October 12, 1993 · age 32
From: 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).

Bio via TMDB ↗

§ Known for

Are You Human?

2018 · Nam Shin / Nam Shin III

Running Man

2010 · —

Boyfriend on Demand

2026 · Seo Eun-ho

The Beauty Inside

2015 · Woo-jin 92

Good Doctor

2013 · One of the punks who wants to beat Shi On

Undercover High School

2025 · Jeong Hae-sung

A Year-End Medley

2021 · Yi-kang

Busted!

2018 · Kang-Joon Seo

When the Weather Is Fine

2020 · Im Eun-seop

Cheese in the Trap

2016 · Baek In-ho

Boyfriend on Demand

2026 · TV · Seo Eun-ho

Undercover High School

2025 · TV · Jeong Hae-sung

Grid

2022 · TV · Kim Sae-ha

A Year-End Medley

2021 · Yi-kang

When the Weather Is Fine

2020 · TV · Im Eun-seop

WATCHER

2019 · TV · Kim Young-Koon

Are You Human?

2018 · TV · Nam Shin / Nam Shin III

Busted!

2018 · TV · Kang-Joon Seo

The Third Charm

2018 · TV · On Joon Young

Idol Fever

2017 · TV · Do Yun's older brother

Cheese in the Trap

2016 · TV · Baek In-ho

Entertainer

2016 · TV · Lee Sang-Won