[No one will ever accuse Gladio of subtlety. Ravus shivers as Gladio whispers his opinions of the display close to his ears.]

Yes, there is some cross-over between the Eidolons and our Astrals, though they are not exactly the same. They could be distant relatives, perhaps...if you ignore Typhon and...whatever Ultros is.

[Ravus walks the length of the painting, noting the known Eidolons and the more vague shapes of those unknown. He stops in front of Bahamut, clenching his fists.]

It would seem he is here as well, in some form or another.