Cruel City (2013)
Remember: War of the Son (2015-2016, one of my favorites)
I Hear Your Voice (2013)
I Remember You (2015)
Pinocchio (2014)
You're All Surrounded (2014)
Lookout (2016)
The Man from Nowhere (2010, movie)

Hope this helps :)
Bad guy 
-2010 starring Kim Nam Gil, Han Ga In

Shark
-2013 starring Kim Nam Gil, Son Ye Jin

Mask
-2015 starring Yeon Jung Hoon, Soo Ae

Secret
-2013 starring Ji Sung, Hwang Jung Eum
My Favourites:
Innocent Man
Remember: War of the Son
Scandal: A Shocking and Wrongful Incident
Can You Hear My Heart
Gap Dong
Pinocchio


Haven't Seen but is always recommended to me
Iris
City Hunter
The Princess' Man - EPIC drama!

Cruel City 

The Bridal Mask 

City Hunter

Green Rose 

Lucifer aka The Devil

Innocent Man

Cain And Abel