Panda:
The badguy from giant
the badguy from voice

omg this is acc perfect

My picks for the best (worst ) villains ever are :

1. Jo Gwan Woong (played by Lee Sung Jae ) from GU FAMILY BOOK-The most hate inducing kdrama villain ever.

2. Ki Cheol (played by Yoo Oh Sung)  from FAITH

3. Joo Hye Sung (Played by Kwon Wool) from Let's fight Ghost

4. Nam Gung Min in Girl who sees smells

5.Hwang Woo Hyun (played by Kim Min Jong) from A man called God

6. Kang So Young (played by Jo Soo Hyang) from School 2015: Who are you

7.Choi Yoo Jin (Played by Song Yoon Ah) from THE K2

8. Lee Jae Kyung (Played by Shin Sung Rok) in You who came from the Stars

9.Kang Tae San (played by Cha In Pyo) in Dae Mul

10.Lady Mi Shil(played by Go Hyun Jung) in Queen Seon Duk

ANY VILLAIN PLAYED BY SHIN SUNG ROK. as you can tell by my username i love him LOL he's so talented any role he plays!!!!

Mishil from Queen Seon Deok <3 So far she's the best villain. 

Jung Woong In - I Hear Your Voice

Faceless Killer (no actor)  W

John Mayer (Yoon Je Moon)  King2Hearts

Kang In Wook (Ryu Soo Young)  Love in Sadness

Yeon Chul "El Temur" (Jeon Gook Hwan)  Empress Ki

Lady Mi Shil (Go Hyun Jung)  Queen Seon Duk

Nam Gyu Man (Namgoong Min)  Remember: War of the Son

Choi Won Shin (Yoo Oh Sung) Gunman In Joseon

Kim Joo Young (Kim Seo Hyung)  SKY Castle

+ some others, but I'll edit later...

Shin Sung Rok as the Emperor in The Last Empress, total psychopath.
He had an awesome role in My Love From the Stars as well, evil villain. He perfectly fits into these roles.

Jeon Gook Hwan as Grand Councilor in Empress Ki, makes everyone quiver in fear.

Lee Sung Jae as the villain in Abyss.

jung ui myeong (KIM SUNG-CHEOL)- SWEET HOME