User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-112.208.24.199-20130509152947

"To storm or fire, the world must fall."

I'm betting it will be Leo and/or Frank (fire) who'll defeat Gaea (world/earth). I mean she messed up Leo's life since childhood because she forsaw that he will be essential to her downfall or something and she wanted Frank dead (either because he's too powerful or my theory).