Leatherface – the original Leatherface, not the more farcical one in TCM 2 where he pseudo-humps Stretch with his chainsaw in beat-you-over-the-head-phallic-symbol way, although I do love that one too – is sympathetic in a way the others aren't. The terror of Michael Myers is his blankness; his generic Halloween mask emphasizes how little is going on behind there besides just the desire to kill. And Freddy – well, the dude was a child molester. Enough said.
But Leatherface, while he does bludgeon the free-wheelin' teens who find their way into his house of horrors, is sort of kerfuffled by the whole thing. In one scene, he mutters to himself, shaking his head by the audacity of the kids who are interrupting his normal day-to-day life. His home life is pretty messed up; his brothers pick on him, his grandmother is a dried-up corpse in the attic, and his grandfather is barely able to feed himself. And as far as the killing, he doesn't seem to see the people as much more than two-legged cows; he bludgeons them, hangs them on hooks, and stuffs them in freezers. He's just doing his job, as far as he's concerned.