Alienoid is a 2022 South Korean science fiction action film directed by Choi Dong-hoon, starring Ryu Jun-yeol, Kim Woo-bin, and Kim Tae-ri. The film depicts an extraordinary story that unfolds as the gates of time open between late Goryeo and the present in 2022, when aliens appear. It was released on July 20, 2022, in IMAX and 4DX formats. The continuation, Alienoid: Return to the Future, was released on January 10, 2024.

Kim Woo-bin is a South Korean actor and model. He began his career as a runway model and made his acting debut in the television drama White Christmas. He subsequently gained attention in A Gentleman's Dignity (2012), and made his breakthrough with School 2013 (2012-2013) and The Heirs (2013). Kim later starred in box office hits Friend: The Great Legacy (2013), The Con Artists (2014) and Twenty (2015). In 2016, he took on his first leading role on television in Uncontrollably Fond.