Personal details
Known for
Acting
Gender
Male
Born
23 ottobre 1987 (38)
Place of birth
Ulsan, South Korea
Also known as
In Guk Seo · Seo In-guk · Seo In-gook · Seo In Kook
Biography
Seo In-guk (born October 23, 1987), is a South Korean singer-songwriter and actor. He began his singing career after winning the talent reality show Superstar K in 2009, and made his acting breakthrough in Reply 1997 (2012). Since then, he has starred in television series, High School King of Savvy (2014), Hello Monster (2015), Shopping King Louie (2016), and Death's Game (2023).
Conosciuto per
8.9
Series
See You at Work Tomorrow!
Kang Si-woo
2026
8.4
Series
Boyfriend on Demand
Park Kyeong-nam
2026
7.9
Series
Doom at Your Service
Myul Mang / Kim Sa-ram
2021
8.4
Series
Death's Game
Choi Yee-jae
2023–2024
6.4
Film
Project Wolf Hunting
Park Jong-du
2022
8.2
Series
Better Late Than Single
Self - Cupid Expert
2025–
7.2
Series
Twelve
Won-seung
2025
7.3
Series
Hello Monster
Lee Hyun
2015
8.0
Series
Master's Sun
Kang-woo
2013
8.0
Series
The Smile Has Left Your Eyes
Kim Moo-Young
2018
7.9
Series
Shopaholic Louis
Louie
2016
7.8
Series
Squad 38
Yang Jung-do
2016
8.0
Series
Reply 1997
Yoon Yoon-jae
2012
7.5
Series
High School King of Savvy
Lee Min-seok / Lee Hyung-seok
2014
6.9
Series
Love Rain
Kim Chang-mo & Kim Jeon-seol
2012
7.6
Series
Café Minamdang
Nam Han-jun
2022
5.6
Series
The King's Face
Prince Gwanghae
2014–2015
8.3
Series
Better Late Than Single: After Service
Self
2026
6.9
Film
Pipeline
Pindol / Kang Sae-dol / Drill-bit
2021
3.9
Series
Another Parting
Ahn Young Mo
2014
4.7
Film
I Love That Crazy Little Thing
Yang Ming-zhe
2016
6.5
Film
The Boys
Lee Jae-seok
2023
8.0
Film
Boy
Mad Hatter
2026
Acting credits 23 titles
See You at Work Tomorrow!
as Kang Si-woo
8.9
2026
Better Late Than Single: After Service
as Self
8.3
2026
Boyfriend on Demand
as Park Kyeong-nam
8.4
2026
Boy
as Mad Hatter
8.0
2026
Better Late Than Single
as Self - Cupid Expert
8.2
2025–
Twelve
as Won-seung
7.2
2025
Death's Game
as Choi Yee-jae
8.4
2023–2024
The Boys
as Lee Jae-seok
6.5
2023
Project Wolf Hunting
as Park Jong-du
6.4
2022
Café Minamdang
as Nam Han-jun
7.6
2022
Pipeline
as Pindol / Kang Sae-dol / Drill-bit
6.9
2021
Doom at Your Service
as Myul Mang / Kim Sa-ram
7.9
2021
The Smile Has Left Your Eyes
as Kim Moo-Young
8.0
2018
Shopaholic Louis
as Louie
7.9
2016
Squad 38
as Yang Jung-do
7.8
2016
I Love That Crazy Little Thing
as Yang Ming-zhe
4.7
2016
Hello Monster
as Lee Hyun
7.3
2015
High School King of Savvy
as Lee Min-seok / Lee Hyung-seok
7.5
2014
The King's Face
as Prince Gwanghae
5.6
2014–2015
Another Parting
as Ahn Young Mo
3.9
2014
Master's Sun
as Kang-woo
8.0
2013
Reply 1997
as Yoon Yoon-jae
8.0
2012
Love Rain
as Kim Chang-mo & Kim Jeon-seol
6.9
2012