No so random thought...

There's no actual Summon/GF/Eidolon/Aeon known as Tiamat, is there? I see again and again in fanfic as a female equivilent of Bahumut and frankly, I wonder where along the line people came up with the idea.

I mean sure, I know of one origin of her, Dungeons and Dragons, where she is a dragon goddess (a dead one in the branch I know best, Forgotten Realms), and I think she originally comes from sumarian mythology but her in FF? Well someone will have to enlighten me on that one.