So. This is the first of my villains I've ever created. In my Inverted Horizons, there was never a great threat called, simply, The Destroyer. Nor did its influence ever exist. Instead, there are two figures who have taken its place; Countess Nasávať is the very first of them. So, what makes Nasávať so great a threat that Samantha believed the world could only be saved by turning everyone into a plushie? Simple. The Countess desires all life to become vampires like herself, serving her every single whim; except she forgets that lesser vampires (That is to say not her) instantly turn to ash in daylight. She can wear a layer of sunscreen and be bothered, and she really hates going out in the day, but she assumes that the only reason her minions keep dying is because they forgot the same protection.
She hasn't figured out that for any vampire she creates, the sun is death the moment it touches any exposed part of you. Samantha, innocently enough, believes that if everyone becomes a plush, they have no blood to attract the Countess, nor flesh to be turned into a vampire. She's not pushy about it, either. She straight up warns of the Countess, offers her solution, and if she's refused, she still tries to give them means to protect themselves from the Vampire Queen.
Of course, the vampire threat usually happens by accident, as the newly created vampire goes on a frenzied hunt for more... You see, for an Arabian born vampiress who likes to constrict her victims as she hypnotizes them into submission before feasting on their will and maturity, degrading them to ABDL slaves to her will, she's a little sensitive she can't bite someone and pass her curse most of the time without the effort going to Hell in a hand basket set on fire. But that's because her fangs just aren't fully developed. She can inject poison with them and sometimes the dose is lethal and creates a monster, but it makes her uncomfortable with how sensitive her lips are. Most vampires you paralyze with a wooden stake through the heart; with the Countess, it's trapping HER in a long, extended and passionate kiss. She has a crippling oral fixation...
Is she a villain? Yes. Is she deliberately looking to kill all life come sunrise? No. Is she kind of an idiot and Samantha's foil? Absolutely. Though, I suppose you can say she's the lesser of two evils...