Board Thread:General Discussion/@comment-26715865-20151029152050/@comment-25375217-20151030193017

Well, if Cora got Hades to marry her and is queen, it could explain her appearing over Graham/Nealfire/etc.

And if they go the route of "underworld is where bad people go", that explains away Nealfire and possibly even Graham. Then we just have to worry about Malcolm/Ingrid/etc.

They could even go the route of "everyone looks and acts the same and aren't who they used to be" (as seen in Percy Jackson/Heroes of Olympus and Super Paper Mario (don't judge me)). Then we may or may not have actually seen them. Or say the underworld is massive and they're elsewhere.

There are many ways to explain them away. They shouldn't, but they probably will.