Huh.
I don't think they had enough description in their Mythos for most of the story to make sense. Who is Etro and the other demon gril thingy. After the Fal'cie complete what they are told to do, do they die? Or turn into something themselves? Damn sqeenix.
We know jsut about nothing about the mythos.
They might just be saving some of it for Versus, but that means...metalic summons... *cries*