This is Marlow, a peasant girl from the 1600s turned vampire. I'll dive into her backstory more in her intro comic
Part of her gimmick is that since she's about 400 years old, she's able to appear in a lot of different places/settings/time periods from the 1600s to current times, or even the future.
The first two outfits suggested in the sheet are more of a suggestion/fill in, anyone is welcome to draw her in more period accurate clothing

By no means is she a good person, but perhaps isn't your definition of evil either. She uses humans commiting crimes, big or small ones, as an excuse to execute vigilante justice and basically rip their throats open to feed on them. Her goal is ultimately survival and independence.
She has developed a charming fake persona to lure humans in to entice them, though if you manage to get beyond that she seems bitter and mostly seems to communicate with snark, convinced that humans aren't worth her time. But occasionally, if you get her to have fun, she seems to briefly forget about that.

If you have any suggestions/thoughts/critique, I'd love to hear!