Yoo Seung-mok, born on August 14, 1969, is a South Korean actor. He began his career in theater before establishing himself in film and television, becoming one of the most prolific and recognizable character actors of his generation. His filmography includes appearances in internationally successful and critically acclaimed productions. He has frequently collaborated with director Bong Joon-ho, playing significant roles in films such as *Memories of Murder* (2003) and *The Host* (2006). His other notable film credits include the blockbuster *Train to Busan* (2016), the historical drama *1987: When the Day Comes* (2017), and the action film *Veteran* (2015). On the small screen, he has appeared in popular series such as *Misaeng* (2014) and *Crash Landing on You* (2019). Praised for his remarkable versatility, which allows him to range between comedic and dramatic roles, he has received several nominations for major national awards, consolidating his status as an esteemed and highly sought-after actor in the South Korean industry.