Seo Kang-joon

Seo Kang-joon

Lee Seung Hwan, known professionally as Seo Kang Joon, is a South Korean actor, model, singer, and former member of 5URPRISE (서프라이즈). He graduated from Sanbon High School and later obtained an associate's degree in Acting from Dong Seoul University. Before debuting, he worked as a part-time model to pay for college. In September 2013, Fantagio (판타지오) launched a new project group called 5URPRISE. The group members were selected through Fantagio's "Actor′s League," a program for discovering aspiring actors, and were trained for two years before making their entertainment debut. But, unlike idol groups, they began their careers as actors and then expanded into acting. He made his acting debut in 2013 with a role in the web drama "After School: Lucky or Not". They released the single "Hey U Come On" as an OST for the drama and also began appearing in the music videos of labelmate group HELLO VENUS. In 2014, he got his first lead role in "Cunning Single Lady", for which he won the Best New Actor award at the 7th Korea Drama Awards. He made his official singing debut in November 2014 as 5URPRISE's leader, vocalist and face of the group with their first single album, "From My Heart". The following year, they made their Japanese debut with the single album, "5urprise Flight". However, some of the members began getting more acting opportunities so the group had another Japanese single album in August 2016 and then stopped releasing new material. The members' contracts with Fantagio ended in March 2020 and the group officially disbanded. He enlisted for his mandatory military service on November 23, 2021, and was discharged on May 22, 2023. He is currently represented by Man Of Creation (맨오브크리에이션).

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Known For

Filmography

2025

Undercover High School
Undercover High School
as Jeong Hae-sung
TV - Released: 2/21/2025

2022

Grid
Grid
as Kim Sae-ha
TV - Released: 2/16/2022

2021

A Year-End Medley
A Year-End Medley
as Yi-kang
Movie - Released: 12/29/2021

2020

When the Weather Is Fine
When the Weather Is Fine
as Im Eun-seob
TV - Released: 2/24/2020

2019

WATCHER
WATCHER
as Kim Young-Koon
TV - Released: 7/6/2019

2018

Are You Human?
Are You Human?
as Nam Shin / Nam Shin III
TV - Released: 6/4/2018
The Third Charm
The Third Charm
as On Joon Young
TV - Released: 9/28/2018
Busted!
Busted!
as Kang-Joon Seo
TV - Released: 5/4/2018

2017

Idol Fever
Idol Fever
as Do Yun's older brother
TV - Released: 7/7/2017

2016

Cheese in the Trap
Cheese in the Trap
as Baek In-ho
TV - Released: 1/4/2016
Entourage
Entourage
as Cha Young-Bin
TV - Released: 11/4/2016
Entertainer
Entertainer
as Lee Sang-Won
TV - Released: 4/20/2016

2015

The Beauty Inside
The Beauty Inside
as Woo-jin 92
Movie - Released: 8/20/2015
Summer Snow
Summer Snow
as Sang-gyu
Movie - Released: 10/28/2015
Hwajung
Hwajung
as Hong Joo-won
TV - Released: 4/13/2015
To Be Continued
To Be Continued
as Ah-rin's elder brother
TV - Released: 8/18/2015

2014

Bomi's Room
Bomi's Room
as Himself
Movie - Released: 8/21/2014
My Love, My Bride
My Love, My Bride
as Joon-soo
Movie - Released: 10/8/2014
Cunning Single Lady
Cunning Single Lady
as Gook Seung-hyun
TV - Released: 2/27/2014
Roommate
Roommate
TV - Released: 5/4/2014
What Happens to My Family?
What Happens to My Family?
as Yoon Eun-Ho
TV - Released: 8/16/2014
The Best Future
The Best Future
as Choi Go
TV - Released: 10/28/2014

2013

하늘재 살인사건
하늘재 살인사건
as 尹河
Movie - Released: 12/5/2013
The Suspicious Housekeeper
The Suspicious Housekeeper
as Choi Soo Hyuk
TV - Released: 9/23/2013
Good Doctor
Good Doctor
as One of the punks who wants to beat Shi On
TV - Released: 8/5/2013
After School: Lucky or Not
After School: Lucky or Not
TV - Released: 9/2/2013
Home Alone
Home Alone
as Self
TV - Released: 3/22/2013

2012

To the Beautiful You
To the Beautiful You
as One of the guys putting ghost makeup on Song Jong Min's group
TV - Released: 8/15/2012

2011

Law of the Jungle
Law of the Jungle
TV - Released: 10/21/2011

2010

Running Man
Running Man
TV - Released: 7/11/2010
KBS Drama Special
KBS Drama Special
TV - Released: 5/15/2010

2009

Melon Music Awards
Melon Music Awards
as Messenger
TV - Released: 12/16/2009