Jang Hyun-sung

Jang Hyun-sung is a South Korean actor known for his deep and honest acting in theatre, films and television. Crime drama fans remember him as the cold police chief Kim Bum-joo in Signal (2016). Newer fans know him as Jin Myeong-chul, the rich and strict group chairman in Flex X Cop (2024).

Jang Hyun-sung is 178 cm (5 ft 10 in) tall.

Early life

Jang Hyun-sung was born on July 17, 1970, in Geoje, South Gyeongsang Province, South Korea. He studied theatre at Seoul Institute of the Arts. He is married and has two sons, and many families later enjoyed seeing him as a warm father on the family show The Return of Superman.

Career and breakthrough

He started his career as a member of the Hakjeon Theatre Company, a famous stage group that produced many great Korean actors. He then moved into film and television. He became well known for his work with director Song Il-gon in art films such as Spider Forest (2004) and Feathers in the Wind (2005), where critics praised his quiet and deep acting.

Popular roles

In Signal (2016), Jang Hyun-sung played Kim Bum-joo, a high police officer who hides the truth to protect his power, and he made the character truly hateful and real. In Flex X Cop (2024), he played Jin Myeong-chul, the chairman of Hansu Group and the father of the hero, a man whose cold choices drive much of the family story.

Recent work

Jang Hyun-sung also played Kim Sang-man in Money Heist: Korea - Joint Economic Area (2022), which brought him to global streaming fans. In 2025 he appeared in The Art of Negotiation as Ha Tae-su. After more than thirty years of acting, he is still one of the most trusted faces in Korean drama.