Heo Joon-seok (허준석) is a South Korean actor born on June 11, 1982, in Busan, South Korea. In the Oxfea catalogue, he is best known as Kim Seong-jin in Doctor X: Mafia in White (2026), a mystery and crime drama set in the medical world.

Heo Joon-seok takes on the role of Kim Seong-jin in a mystery and crime drama, and his character is part of that tense world. The role is his best-known credit on Oxfea, and viewers can explore the series in the drama guide.