Beloved actors who played the villain at some point

Hello people! I was wondering, what are some of your favorite or just generally appreciated actors who at some point played the villain in a drama or movie? I don't simply mean dramas where they acted as a second lead but also as the villain! Some examples of this would be Nam Goong Min (obviously I may add lol) or Ji Chang Wook who played the villain in five fingers. PS Could you please also mention in what drama they acted, so I can know what to watch? Thank you!

Lee Bum Soo - Moorim School
Shin Sung Rok - Liar Game
Bae Soo Bin - Secret
Lee Duk Hwa - Hotel King

Ji Chang Wook in 5 fingers is what made me a fan of his. Corrr that boy can cry!

Song Jae Rim - Two Weeks
Cha Seung Won - 71 Into the Fire, Eye for an Eye, Libera Me
Kim Kang Woo - A Man's Story, Goodbye Mr. Black
Kim Jae Won - Hwajeong
Joo Ji Hoon - The Devil
Dong Ha - Three Days, Last, Suspicious Partner
Yoo Ah In - Strongest Chil Woo (assassin - he was still my favorite character however)
Lee Wan - Swallow the Sun
Lee Ji Hoon - Oh My Geum Bi
Lee Joon - Gap Dong
Kim Jae Wook - Voice

- Zhao Liying (Zanilia Zhao) played a villain in The Palace (2013) and I can't wait until she does it again;
- Kim Kang Woo in A Man's Story;
- Jo Sang Wook is sort of a villain in Giant;
- Kang Ha Neul in Missing Noir M (episodes 1 & 2);
- Bae Soo Bin in My Heart Twinkle Twinkle (and I believe in Secret Love as well?).

Kim Sung Oh in Night Watchman's Journal
"Dimples" aka Kim Tae Hoon in Angry Mom and ALMOST everything else he's ever been in.
Kim Kang Woo BEST VILLAIN EVER in A Man's Story
Lee Soo Hyuk in Scholar Who Walks the Night
Jang Keun Suk in The Case of the Itewon Homicide 
Kim Jae Wook in *Its a spoiler so I won't say but he was amazing as a bad guy*
Nam Goong Min in Remember - War of the Son