The meanest western actor is Bruce Dern. He KILLED John Wayne in "The Cowboys," and I understand he received death threats from deranged movie fans. In a long string of movies and TV episodes, he played dangerous, sniveling, backstabbing, cowardly villans. As a child I hated him, with that whiney voice and those beady little twitchy eyes.
As an adult, I began to appreciate what a great actor Dern was, and what an accomplishment it was to create his characters. He understood that the most dangerous villan wasn't the toughest or biggest, but the sneaky, cowardly one that will lie, scheme and shoot you in the back.