I made this name up a few years ago and use it for everything. To me, it sounds like an elf name, but I use it for a Nord, which makes no sense to me. I just love the name xD

I name all sorts of characters 'Deathblade'. I came up with that when I was 8 years old. Why I still use it is beyond me.

I'd use it for an Altmer or Bosmer.

Breton, assuming it is pronounced like feuille of fauteuille.

Sounds like a darkelf name truly due to its dark sounding nature. Reminds me of Nazgul from Lord of The Rings

The Na is pronounced Nah and the Viil is pronounced like in evil or villian.

Now that I think about it, it really does sound dark.

Sounds like a mer. Personally though, in offline games I don't put a whole lot of concern into names, since only I will see them and it really has little consequence. Just pick something and go.

I'd say Breton, like Gaston Naviil or something, maybe if it was spelled Naviile. it's a nice name.