Board Thread:Questions and Answers/@comment-25942629-20150118142124/@comment-25942629-20151105024229

Hahaha.... This is a really old thread. We have nearly a year of chapter and manga volume releases since I asked those questions, plus the writer's Q&A and all of the loose translations for things online. I can answer my own questions now.

1.  Mika, Rene, and Lacus are city guards, who are of a much higher ranking than standard vampire soldiers. Rene and Lacus are not nobles. Mika is not considered to be a noble, but this may change in the future. As one who was turned into a vampire by a progenitor, this should give him noble status. It's possible that he won't have this status until he's publicly claimed by Krul or something. He's quite young, too, so there's good reason to wait for his debut if anyone's planning to debut him at all. It looks like Krul wants to keep his existence under wraps, and Ferid is threatening that. It'd be cool if they changed his name to Mikaela Tepes.

2.  All progenitors are nobles, but it looks like not all nobles are progenitors. If the translations online (I think it's from the manga site's Q&A) are correct, then anyone turned by a progenitor becomes a noble. This implies that there are non-progenitor nobles. Anyone the lower-ranked nobles turn becomes a common vampire.

There's also supposed to be that special Mika LN or something released in Japan in December. That should give a lot of good info on the vampires, but it'll probably be forever until it's officially released in English. The first English LN doesn't even come out until next month.