1 Well, yoi is the same thing as ii. I usually hear it in period pieces, so I thought it was archaic. Usually some figure of authority or other says "sorede yoi". Lemme check the Banner though.

2 I think it's just yoi. E.g. Lafiel says "dasu ga yoi" where Pickard would've said "on screen".

3 You could be right. Maybe it's just that Kawasumi emphasizes the "ee" sound at the beginning of "yo".

4

Not archaic so much as "royal". It's just that you don't -ever- see the Emperor in a modern-day story...

5

Kawasumi uses it as Eineus in Macademi Wasshoi. Eineus is a top-ranked demon. (If you believe Finea, Eineus is the top Vergest, the top demon-beast.) Like all demons, she's also immortal and thus as old as the universe.

So it's not totally out of character for Eineus to talk that way, too.

6

"Vergest"? Is that how the fansubbers translate the word, or is it from the original Japanese text? Shouldn't it be "barghest"?

http://en.wikipedia.org/wiki/Barghest

http://en.wikipedia.org/wiki/Barghest_(Dungeons_&_Dragons)

7 Also, I'm under the impression that as a monster, the barghest is slightly more popular in Japan than in the west.

8

When she first appears in the series, they toss up this intro frame:

The top line is エーネウス ザ バージュスト "eeneusu za baajusuto". (I'm not absolutely certain about the ュ.)

There is a standard way of representing the foreign sound "va" in katakana, ヴァ. But I'm not sure how widespread it is. I think it's a pretty recent  innovation and it may not have caught on.

You're far more likely to see v- sounds converted to b- sounds, and it looks like the fansubbers assumed that was the case here. This particular group screwed up some other names e.g. Synclavier became "Shinkurado". So it wouldn't be too surprising if they screwed this up, too, as obscure as it is.