Yoon Jeong-seop

Drama Series - 2020, 16 episodes • as [Joo Hun's assistant]

After being bullied and discriminated because of her ugly looks, a high school girl transforms herself into a gorgeous "goddess" and quickly rises to fame after mastering the art of makeup via online tutorial videos.

Drama Series - 2025, 16 episodes • as Black Suit Man

In 1980s Korea, a movie star and a starlet defy male-dominated industry rules and backstage corruption while filming the provocative "Madame Aema."

Movie - 2022, 2h 15m • as International Department Agent 1

After a high-ranking North Korean official requests asylum, KCIA Foreign Unit chief Park Pyong-ho and Domestic Unit chief Kim Jung-do are tasked with uncovering a North Korean spy, known as Donglim, who is deeply embedded within their agency. When the spy begins leaking top secret intel that could jeopardize national security, the two units are each assigned to investigate each other.

Drama Series - 2025, 16 episodes • as Lee Chung-hyeon

A potato researcher with 12 years of experience who is working on a secret project and a newly appointed eccentric director go head to head before falling for each other in a sweet office romance.

Drama Series - 2021, 16 episodes • as Movie Filming Staff

Ma-Ha, a member of the struggling girl group Teaparty, faces anger and backlash after injuring popular idol Kwon Ryeok during a reality TV program, leading to tense encounters as their paths continue to cross.

Movie - 2017, 2h 15m • as Valmont

There are four people who want to become an actor. Their names are Hun, Eun, Jun, and Kyung. After watching the play [QUARTET]. They decide to participate in an acting workshop. They are trained by Mirae, the renowned actor of the [QUARTET]. Through the workshop sessions, Mirae is able to look into the inner lives of the four youths.

Movie - 2024, 2h 15m • as Independence army

In 1909, several years after Korea is forced into becoming a Japanese colony, freedom fighters plot the daring assassination of Japan's prime minister during their quest for independence.

Movie - 2023, 2h 15m • as Black Party Member 2

In 1933, when Korea was under Japanese occupation, five people in Gyeongseong are suspected to be "Phantom" spies of the anti-Japanese organization.

Drama Series - 2017, 16 episodes • Main Cast Role

An outstanding performance featuring brilliant storytelling, high stakes drama, and unforgettable character arcs.

Movie - 2022, 2h 15m • as Sin Jae Hyeok

If you look at my face, I'm 100% a gangster! One day, he became the most handsome guy in the squad! Police officer 'No Mi Nam' is in the midst of a criminal investigation, and unlike his nice and gentle personality, he looks more like a gangster just by looking at his face. One day, he woke up a month after his surgery following an accident while stopping a fellow detective's fight. But, when he woke up, his face changed?! He became the most handsome guy in the world from being a gangster-like to 'No Mi Nam (handsome guy)'! 'No Mi Nam fell in love with narcissism, which seems to change the way others see him. After accepting his face, he became the biggest headache of the squad and ended up being pushed into a deep-dive investigation of a hair salon on the outskirts. A huge opportunity came to my ugly self! What's the result?