Heo Sung-tae


Heo Sung-tae is a South Korean actor. He gained domestic prominence in the 2016 period thriller film The Age of Shadows and became recognized internationally for his role in the first season of Squid Game. He has since starred in the television series Crash and Good Boy.
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Early life and education

Heo was born in Busan, South Korea. He graduated from Pusan National University, where he majored in Russian. Prior to acting, he sold televisions in the Russian market for LG Corporation. He later joined the planning and coordination department of a shipbuilding company.

Career

Heo began his acting career in 2011, when he entered SBS's talent show Miraculous Audition. According to Heo, he drunkenly signed up to audition after seeing a commercial for the show. He gained national prominence as Ha Il-soo in the 2016 period thriller film The Age of Shadows. For his role in The Fortress, Heo had to learn the Manchu language. In the 2021 Netflix original series Squid Game, Heo starred as the gangster Jang Deok-su. In 2025, he starred in the action-comedy JTBC series Good Boy, alongside Park Bo-gum.