I'm gonna try to resist the obvious Darth Vader because it's sort of a thread killer.
I'm going with the Arnold Schwarzenegger's Terminator from Terminator (1984) and runner up I would probably go Agent Smith from the Matrix (1999)
How about y'alls out there


Used tmoviesh movies more back-in-the-day but can't say I was necessarily a huge-movie-buff
One that comes to mind is the old-guy with the mustache in the old Clint Eastwood westerns