Manga where mc is demon / evil ? (Pref. Cultivation)

So, we all (or most) know of these cultivation mangas where the mc gets strong and fights against demons / bad guys. And after reading chronicles of heavenly demon, I like the idea of an mc who is actually the evil, trying to get rid of the so called good guys.

Preferably, I'd like a cultivation manga, but I feel this might be difficult..?

It might also be nice to have a mc who looks like a demon / monster, or is surrounded by them, but are his allies