Monstrum is a 2018 South Korean period action horror film directed by Heo Jong-ho. It stars Kim Myung-min, Kim In-kwon, Lee Hye-ri and Choi Woo-shik. The film was released on September 12, 2018. It was chosen to compete in the Sitges International Fantastic Film Festival, screening there on 13 October.

Kim Myung-min is a South Korean actor. He is best known for his leading roles in the television series Immortal Admiral Yi Sun-sin (2004), White Tower (2007), Beethoven Virus (2008), Six Flying Dragons (2015-2016), and Law School (2021), as well as the films Closer to Heaven (2009) and the Detective K film series. His first leading role was in the film, Sorum (2001). Praised for his acting skills, he is often called 'The Acting Expert'.