That's Nael van Darnus. We've seen him already in the Coil. If you haven't you're a bad. Like super fucking bad. We've also seen a new Rivenroad arena from teaser pics of the Coil. There is likely going to be a Darnus fight. In fact, "likely" isn't necessary. There's gonna be one. Whether or not it's in this patch is debatable, but if they still plan on "Bahamut fight Turn 10" like that rumor said it would be this patch.
We have seen Louisoix and Nael van Darnus TALKING. YOU DON'T UNDERSTAND HOW HYPE THE COIL IS YOU FUCKERS