I love that these are villains. Not the bad guy from some blood fest where you wonder more about how they doo the gory stuff than being scared.
Most of them have a shock value for a second or two and the rule “virgins live sluts die”

The hit man that Rocko kills with a pool ball in Boondocks Saints.......just cold. No emotion.

Takeshi Katano as Sgt Hara in Merry Christmas Mr Lawrence.
He is great in Brother if you can find it. Buddy of Scott Glenn.

Dennis Hopper in Blue Velvet