Cordy
In my book? Yes. She's got a nasty personality and has no qualms about eating people. But you know how it works here. They'll all insist on giving her a fucking chance until someone they know gets bit. I'm keeping an eye on her, though. I try to with all the vamps that show up here.
Stakes, yes. Crosses and other holy weapons, no. And her lot don't like silver either. Also, she can mind-control you if you make eye contact.