Kim Yoon Suk is a South Korean film and stage actor who starred in the blockbusters movies The Chaser (2008) and Woochi where he played Woo Chi's enemy, Hwa Dam.
Back in high school, Kim made his debut as a stage actor and starred in TV dramas including Loveholic (2005), but his first starring role was when he played ex-cop turned pimp in The Chaser (2008) alongside Ha Jeong Woo which won him the Best Actor award at 2009 Blue Dragon Film Awards.
(Source: Wikipedia)