Ko Asung earned public acclaim and rose to prominence with her performance in The Host (2006), and gained international recognition through her role in Snowpiercer (2013). She has since built a distinctive style all her own, working across genres and eras in films such as A Resistance (2019), Samjin Company English Class (2020), and Because I Hate Korea (2024), which was selected as the opening film of Busan International Film Festival 2023. Through her nuanced performances and irreplaceable presence in every project, Ko continues to solidify her status as one of the most representative actors in Korean cinema.