Gong Ji-cheol (Korean: 공지철; born July 10, 1979), known professionally as Gong Yoo (공유), is a South Korean actor. He is best known for his starring roles in the television series Coffee Prince (2007), Guardian: The Lonely and Great God (2016–2017), the Netflix series Squid Game (2021–2025), and the films Silenced (2011), The Suspect (2013), Train...