Dark vamp doesn't even get a name of his own. Maybe he is secretly the long lost son of the original Darkovia family. I'm sure he has a story, a good one. I try to chat and get to know him. but he seems to have a pretty big chip on his shoulders. He just wants to fight as soon as I get close.
I haven't given up. After all, I see him every time I go to Darkovia for the dailies.