Yu Oh Seong (also written as Yu Oh Sung or Yoo Oh Sung) is a South Korean actor. Born on September 11, 1968, Yu got his start in the television drama “Love, Love: The Stories of Han Hie-Jak” in 1991 and began to get many minor parts in films. His breakthrough film role came in “Beat” (1997), where he played a young gangster. He went on to star in the acclaimed comedy “The Spy” and “Attack the Gas Station” in 1999, making him a household name. He has recently appeared in the film “Don’t Cry, Mommy” (2012) and the television drama “Faith” (2012).