Seo In-guk
NEW Watch the Trailer
as Mad Hatter Boy Released
January 14, 2026 RomanceCrime
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).
Filmography
Project Wolf Hunting
as Park Jong-du
Pipeline
as Pindol / Kang Sae-dol / Drill-bit
No Breathing
as Jo Won-il
The Boys
as Lee Jae-seok
I Love That Crazy Little Thing
as Yang Ming-zhe
SBS: The Master's Sun - Making
as Self
Boy
as Mad Hatter
