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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).
Filmography24 titles

Navillera
2021as Hwang Hee
2021as Hwang Hee

Better Late Than Single
2025as Self - Cupid Expert
2025as Self - Cupid Expert

Death's Game
2023as Choi Yee-jae
2023as Choi Yee-jae

She Was Pretty
2015as Self
2015as Self

Running Man
2010
2010

Boyfriend on Demand
2026as Park Kyeong-nam
2026as Park Kyeong-nam

Abyss
2019as Grim Reaper
2019as Grim Reaper

Oh My Ghost
2015as Edward
2015as Edward

The Smile Has Left Your Eyes
2018as Kim Moo-Young
2018as Kim Moo-Young

The Master's Sun
2013as Kang-woo
2013as Kang-woo

Reply 1997
2012as Yoon Yoon-jae
2012as Yoon Yoon-jae

Doom at Your Service
2021as Myul Mang / Kim Sa-ram
2021as Myul Mang / Kim Sa-ram

Shopping King Louie
2016as Louie
2016as Louie

Squad 38
as Yang Jung-do
as Yang Jung-do

Reply 1994
as Yoon Yoon-jae
as Yoon Yoon-jae

Soundtrack #1
2022
2022

Cafe Minamdang
2022as Nam Han-jun
2022as Nam Han-jun

High School King of Savvy
2014as Lee Min-seok / Lee Hyung-seok
2014as Lee Min-seok / Lee Hyung-seok

Home Alone
2013as Self
2013as Self

Hello Monster
2015as Lee Hyun
2015as Lee Hyun

Twelve
as Won-seung
as Won-seung

Pipeline
2021as Pindol / Kang Sae-dol / Drill-bit
2021as Pindol / Kang Sae-dol / Drill-bit

No Breathing
2013as Jo Won-il
2013as Jo Won-il

Project Wolf Hunting
2022as Park Jong-du
2022as Park Jong-du