Park Seo-jun, the actor who dismantled his own image one revenge arc at a time

Park Seo-jun

Born	December 16, 1988 Seoul, South Korea
Occupation	Actor
Known for	Parasite, The Marvels, Be With You
Awards	Grand Bell · Korean Film Critics Association Best New Actor (2017, Midnight Runners) · Korea Drama Awards Best New Actor (2013, Pots of Gold) · SBS Drama Awards Best New Actor (2015, A Warm Word) · APAN Star Awards Top Excellence in Miniseries (2018, What's Wrong with Secretary Kim?) · Asian Film Awards Rising Star (2019)

Park Seo-jun built the exact career Korean television said an actor like him should have — and then, having built it perfectly, started taking it apart.

By the time he finished filming What’s Wrong with Secretary Kim? in 2018, he was the uncontested lead of Korean romantic comedy. Four consecutive hits, each one larger than the last. The controlled half-smile, the restrained confession timed to the penultimate episode, the physical ease that made every scene feel like seduction — he had mastered the grammar of a genre the way some actors master Shakespeare. Then he stopped doing it.

He was born Park Yong-kyu on December 16, 1988, in Seoul. He enrolled in Seoul Institute of the Arts to study acting, found the social demands of a performing arts school intolerable, and made the unusual decision to enlist for mandatory military service before completing his degree — working as a security guard at a correctional facility in Cheongju. He returned more settled. A connection through actor Kim Soo-hyun brought him to his first agency, and by 2011 he was appearing in music videos and minor television roles. He won a Best New Actor award in 2013 for Pots of Gold, then a second at SBS for A Warm Word in 2015 — while also hosting Music Bank for over a year, being exactly the kind of presentable, energetic figure Korean entertainment companies cultivate.

Kill Me, Heal Me (2015) gave him his first headline drama, playing a man with dissociative identity disorder whose multiple personalities demanded different registers in each episode. She Was Pretty the same year confirmed him in the rom-com lead. Hwarang: The Poet Warrior Youth extended the range into period drama.

Fight for My Way (2017) was the first notice of a different register — a former taekwondo athlete whose frustration carried genuine weight. The same year, Midnight Runners, a police-academy action-comedy, proved he could anchor a studio production on pure physicality, earning him Best New Actor from the Grand Bell Awards and the Korean Film Critics Association. What’s Wrong with Secretary Kim? (2018) became his commercial peak: a hit that made him a Hallyu export at the precise moment international streaming platforms were learning what Korean television was capable of.

What came next was Itaewon Class (2020), a JTBC drama in which he played Park Sae-ro-yi — expelled from high school, imprisoned for manslaughter, and consumed by a fifteen-year vendetta against the conglomerate that destroyed his family. The role required sustained rage. Park Seo-jun had been known for the way he could soften a scene with a half-smile; Itaewon Class demanded he harden it instead. The ratings validated the choice. The critical reception recognized what the production companies had perhaps not fully anticipated: that the rom-com brand had a ceiling, and he intended to exceed it.

The public controversy worth noting arrived in 2021, when a 2014 interview resurfaced in which Park had expressed traditional views on gender roles — women staying home, mothers as primary caregivers. The backlash was pointed: he had built an audience among younger Korean women who associated his on-screen characters with a kind of emotional availability they read as progressive. The gap between the public projection and the stated private position remained unresolved. He offered no formal apology; the controversy subsided without conclusion. That gap — between the image Korea’s screens made of him and the private record that occasionally surfaces — is the live tension his career inhabits.

In 2023, he joined the Marvel Cinematic Universe as Prince Yan in The Marvels, a role director Nia DaCosta said she conceived after watching Itaewon Class during the pandemic. The film underperformed globally, but Park’s presence drew attention from critics unfamiliar with his Korean work. The same year, Dream, a sports comedy-drama about a footballer who coaches a homeless national team, debuted at number one at the Korean box office.

Gyeongseong Creature (Netflix, December 2023 – January 2024), a two-part period horror series set in 1945 under Japanese colonial rule, extended the dramatic range into physical thriller territory. Surely Tomorrow (Prime Video/JTBC, December 2025) brought a partial return to romance — though built on accumulated loss and long memory rather than first meetings.

Born Guilty, a Disney+ crime-noir series set in 1980s Seoul during the Olympic-era urban redevelopment, casts him as an outright criminal — a villain, for the first time in his career. It is scheduled for 2027. For an actor who has spent a decade systematically refusing the role his audience wanted him to keep playing, it is, by now, exactly the kind of choice one would expect.