Kim Jeong-jin

Kim Jeong-jin is a South Korean actor who has built his name on strong, physical supporting roles. With his sharp eyes and tough look, he often plays fighters, gang members and soldiers, but he can also show a warm and funny side. Many viewers know him from Boyhood (2023), Newtopia (2025) and Happy Anding (2026), where he plays Han Joon-seo.

Early life

Kim Jeong-jin was born on February 7, 1993, in South Korea. He keeps his family and school life private, so little is known about his early years. What is clear is that he worked his way up step by step. He started with small parts and short appearances, learning his craft on real sets before bigger roles came his way.

Career and breakthrough

His first big mark came in the film A Christmas Carol (2022), where he played Baek Young-joong, a young man with great strength and a sharp mind. His half-shaved hairstyle and intense acting left a strong impression on viewers. Around the same time, he appeared in a small role as a guard in the hit series Taxi Driver (2021).

Popular roles

In Boyhood (2023), he played Yang Cheol-hong, the leader of a rough farming gang who circles around the main character. The role made his face known to many drama fans. He then showed a very different side in A Virtuous Business (2024) as Eom Dae-geun, proving he could handle softer stories too. In Such a Close Traitor (2024), he played Choi Young-min, and in the zombie series Newtopia (2025), he played soldier Hwang Gyeong-sik.

Recent work and why fans love them

In Happy Anding (2026), Kim Jeong-jin takes one of his biggest roles yet as Han Joon-seo, near the top of the cast. Fans love him because he feels real in every scene. He can look dangerous in one moment and lost or funny in the next. As his roles keep growing, many viewers believe he is ready for leading parts very soon.