Antiquated Linguistics: A variant; while not exactly old-fashioned, he usually speaks formally and sometimes descends into Sesquipedalian Loquaciousness. How he learned that sort of English when he learned English from reading a modern-day teenager's mind is unknown.
A vampire who is behind the murders of the Queen and Prime Minister. Who she is and what she wants are a mystery. All that is known about her is that she looks like the Grim Reaper, has at least three children, and David hates her.
Cloudcuckoolander: In chapter 17, she remarks that humans, vampires and werewolves are like "china dolls", which disturbs Dracula. She had recently dislocated her shoulder, however, so she might have been in shock.
Chivalrous Pervert: One of the main reasons he joined Terror seems to have been because her daughters were pretty. And he's definitely interested in Abihira. But he has some standards (which Ruthven lacks); he won't flirt with a married woman, for instance.