I am sorry to say that I am not that familiar about the Korean movies or artists who are acting in Korean movies. I have read an article from best essay writing service review blog which was written on Korean movie industry and then I came to know about how big is that industry and actors.
Mishil - Queen Seon Deok!!! I loved her so much. Probably my favorite villain ever. Ki Cheol - Faith. This is a villain that I really appreciated the first time I watched but not as much the second time. idk I liked that he was vulnerable and we really got to see him struggle (not because of the main characters, but because of his own worries. It made him more like a character than just a villain whose only purpose is to make a plot.). I just appreciated that he had a purpose behind his motives I guess.