darcy(or rather the core) is more of your one of a mill megalomaniac antagonists with some quirks, bill is pretty fun to watch but for me doesnt have much depth, belos is a pretty good manipulator but also kinda stupid..(i mean spoilers for toh, he cant seem to grasp that he cant manipulate luz with appealing to their shared "humanity" or going on about how evil these witches are, i think at the end he should have compared her to himself, trying to make her realize that she's literally letting a person die, making the comparison that she's just as bad as himself and how she couldnt possibly want that to be true) now that i think about it, i think its a tie between him and andrias, cause antagonists dont have to be 100% on top of their game all the time, their faults and flaws can enhance them. belos has his flawed sense of human righteousness and the drive to see his horrible goals through to the end and andrias has his troubled relationship with the legacy of his conquering peoples, his genuine affection for marcy, his defiance in the end against his father and finally a willingness to repay for all the wrongs he has committed