Part of the appeal of the K-drama genre is the amazing actors and the K-dramas featured on Netflix have become popular because of the actors that dominate the shows. It's not uncommon for K-drama actors to appear in multiple shows at once across genres. This dichotomy can be an intriguing surprise for audiences who might know an actor from a romantic role, only to see them again as a violent anti-hero in a horror show. Regardless, these actors are cast again and again because of their ability to disappear into a role no matter what the story calls for.

https://screenrant.com/k-drama-actors-netflix-best-shows/