Ko A-sung (born 10 August 1992) is a South Korean actress. She began her career as a child actress, notably in 2006 top-grossing blockbuster The Host. This was followed by major roles in Snowpiercer (2013), Thread of Lies (2014) and Office (2015), as well as the TV dramas Master of Study (2010) and Heard It Through the Grapevine (2015).
In 2029, four years after North Korean army invaded the United States, whose economy collapse, so that the nation repay the debt of APEX. Meanwhile, the resistance from Philadelphia fight against the occupation.
