Hi guys, I have some other theories about Vitus and team Xen. We know that vitus takes Ralts from the Miera region. That means he's been there at some point, probably living there too, maybe? We also know that wherever this dude is, something bad happens.
Now I actually have a VERY far fetched theory. Could Vitus be that Lord Xenadin, leader of the original Team Xen? Yeah, Xenadin died in that accident at the Miera power plant, but what if he didn't? After all, Sirius/Vitus is supposed to have died in the wispy tower fire, but Erin is positive he's alive and out there, somewhere. So it seems easy for him to fake his death, and if he did it at the wispy tower, I wouldn't be surprised if he did it before with the Miera incident.
Now, about Madame X. Some theories say that she could be a (corrupted) version of Maria or Erin. This actually would make sense if my previous theory of Xenadin is true. When we beat her at Blacksteeple Castle, she says "father, I have lost". If Madame X is the daughter of Xenadin, it can only make sense that those two persons are respectively Maria/Erin and Vitus. Of course I can be completely wrong.
Also, as Melia, when you're in the Blakeory library with Erin, you learn that team Xen and the Blakeory have some sort of connection, and that the Miera power plant was owned by the Blakeory. We know that there was a rivalry between the Theolia and the Blakeory, and that the power plant had that meltdown because of a team Xen raid. Now, who would benefit from destroying a Blakeory property?
I also noticed something with team Xen grunts. Apparently Madame X can erase them, make them disappear. This actually reminds me of the Servants that are garufan spells. They can be deleted when they fail their mission, which is also the case for Xen grunts who fail their mission remember that grunt who was living in the garufan ruins under Carotos? As soon as he stepped outside, he felt like he was about to be deleted, saying that it must be the protective spell of the ruins that protected him. And I think that Madame X would just erase anyone who tries to get in her way if she really wants to succeed, but it seems she can only do that to the grunts... I'm really suspecting that team Xen and the Garufas have some sort of connection, for now we can just wait for the updates to answer our questions.