Partial credit? For seeing Star Wars at the RKO Theater on Fordham Road in 1977?
You saw the movies backwards, I saw them when they first came out. Darth Vader was a bad guy, he wasn't Luke & Leia's his father, Luke and Leia weren't brother and sister, and all the rest of it.
As Czechy already pointed out to you, they're not so one-dimensional. Bad guys don't just get born and decide to be bad guys. Scripts start getting boring after you add a couple of chapters to the movie and the bad guy dressed in black is still just a plain old bad guy destroying planets because he's bad like that.
As the series progressed, their reduction into basic tropes became increasingly unavoidable, might as well be watching a Bug's Bunny cartoon. They had to flesh it out some, give the characters some character, nuance, reasons to want to go around blowing up planets for no reason.
Whitewashing Dracula? Francis Ford Coppola's version was the best of the whole lot. I'm surprised anybody has even bother making vampire movies since, let alone of Dracula. except Let the Right One In & Let Me In, that was an interesting take on vampires.
The literal devil? The literal Devil is a Roman reinvention based on the Zoroastrian Angra Mainyu. It's culmination of long line of recasting, starting with the Great Serpent God of Knowledge to Satan as part of the Heavenly Council to the Devil.
The story goes like this, once upon a time two gods that were best friends were hanging out in this garden with their pet monkey people. One day, the Serpent God invited the monkey people to partake of the food of knowledge from whence the Gods got theirs
Afterwards, the other God, an angry and petty wrathful god, upon learning what happened cast the pet monkey people out and chopped off the legs and arms of his buddy and threw him out of the garden and the world has been ruled by evil ever since. How's that for whitewashing? We worship the bad God who has been punishing us ever since, and recasted the good God that gave us the gift of knowledge as the bad God.
Now I don't know anything about this Badlander show, but I'll take it from the guy who actually played the character. According to him, he's a bad guy and nothing but. Period. That's it, no rebel without a cause, no simply misunderstood outsider, no someone who's faulty accused. He's just a bad guy.