I don't think they have necessarily. We have the Sharran priestess that fits the mold. But Wyll is never presented as evil. He's presented as a somewhat naive man who made a deal with a devil in a moment of emotional weakness that he regrets and wants out of. You could say that that's a cliche arhcetype, but it's certainly a different cliche. We don't know anything about the werewolf yet so we can't judge her story on any level really. Lae'zel is evil and honestly, she's just evil in a very plain, open way. Same goes for Astarion. He's got a sympathetic backstory, but he's clearly cruel and sadistic now, whatever he was like before it all.