Quote Originally Posted by SoloWingMetatron View Post
I know right! When I first played through the ARR story I thought for sure Siren would be a Primal, as well as Diabolos. Since there isn't much lore on either I guess there is still a chance they could indeed be Primals. They would make great candidates for the light and dark Egi. Though Bismarck or Alexander might have the light attribute covered, I feel Bismarck is more likely going to be unaspected though.
Siren is a lower case primal (An aetheric being), while Diabolos is confirmed to be a void creature.