I have not one but TWO bloodthirsty Slytherins for you today!
First up- Bellatrix Lestrange, 27. Socialite by day, murderess by night. And afternoon. And morning. And sometimes also day, depending on how she's feeling. Basically, any time is the right time for a bloody time. Thus far, she's managed to keep a lid on it in public- but the fact that she's a purist with one hell of a temper isn't exactly hidden. Or subtle.
So she's been in this Death Eater gig for a while now and is pretty cozy with the Dark Lord (no, not that kind of cozy- she wishes. Although she is perfectly faithful to Rodolphus, thank you very much.) She loves watercolour painting and heavy torture. Dancing and laughing and occasionally setting things on fire wandlessly by accident when her emotional limits are stretched. There is definite batshittery lurking beneath the surface facade, and her People are usually the ones who have to keep it from blowing up and taking everyone down with it.
Anyhoo, let's talk connections! She's a firebrand who's very reactionary and also not shy with an opinion, so there's plenty of opportunities for clashes- but also exceedingly loyal to her friends and family (the ones who aren't traitors) and up for a laugh and a gab about setting eyelashes on fire.
NEXT
Fenrir Greyback (genitor) is 37, a former Slytherin who used to be known as Bertrand Stump, although that's not public knowledge. He hates wizards (he doesn't think that highly of Muggles, either), thinks everyone would be better off as werewolves, and intends to work his way through the country to make a werewolf army. Currently, he does not have an army; he has a pack, and they live in a beat up house where they get into drama and watch television. It helps pass the time between moons. His social skills are not great and he's definitely a bit on the feral side. His ultimate responsibility is to his pack, though his my-way-or-the-highway attitude can grate nerves.
He's responsible for a great number of the werewolf attacks from the past twenty years or so, especially the ones that involve children, but also those against people who speak out publicly against werewolves. While he's taken claim for some of them and his name is known now, he isn't exactly attending the Ministry or writing letters to the editor of the Prophet so his interactions with non-werewolves up until this point are going to be minimal.
As a side note, I'm on the lookout for a right hand man or woman for him- someone who can tolerate his foibles, and who he in turn trusts as a beta to act in his and the pack's best interests. Lemme know if you have any interest in apping that! Doesn't have to be anyone particularly evil, just organised, hee.