Yoo Ah In is a South Korean actor, creative director, and gallerist. He is known for playing a diverse spectrum of roles in both television and film, where he often portrays dynamic characters who exhibit significant personal growth.
Yoo is best known for his leading roles in coming-of-age film Punch (2011), melodrama Secret Love Affair (2014), action blockbuster Veteran (2015), period drama The Throne (2015), historical television series Six Flying Dragons (2015-2016), and the fantasy-romance drama Chicago Typewriter (2017).
In 2018, Yoo starred in the mystery-drama film Burning, directed by the acclaimed South Korean auteur Lee Chang Dong. The film received universal acclaim, competing for the Palme d'Or at the 2018 Cannes Film Festival and being shortlisted for Best Foreign Language Film at the 91st Academy Awards, becoming the first Korean film to do so. For his role as Lee Jong Su, Yoo received international critical acclaim, including being selected for The New York Times' "The Best Actors of 2018" feature.
For his work in film and television, Yoo won the Best Actor award at the Blue Dragon Film Awards and Baeksang Arts Awards, respectively. In 2016, he ranked second in Forbes Korea Power Celebrity list. In addition to his film work, Yoo engages in social and artistic activism. He has also known for his politically and socially charged views and his frequent involvement in online spats with netizens ("internet citizens") on his social media accounts.

[Source: Wikipedia]