As a previous respondent said; read the book – see the films.
Next up: The Road.
That's the ideal way of doing things, in an ideal world.
As a baddie, he cuts an unorthodox figure, but how many of will ever meet a contact killer? Our idea of a film baddie is what we've been fed in celluloid by directors, screen writers and actors over the years.
So on first appearances you'd not be intimidated by him, but once you realise his awful propensity for killing and no compassion, you know he is beyond your own knowledge about what a film baddie is. He is a chilling baddie for the simple reason that he looks nothing like a baddie as we might expect to see.
He and the cop are two stories intertwined, two strands of an-raveled rope, seemingly never to be whole and complete again, going their own ways in small-ville, USA. It's a multi layer story and one worth watching again.