User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-122.164.246.114-20121221062619/@comment-4918650-20130102223518

It said DESCENDANT of Neptune so it could be Frank or Percy. I never thought of it being Arion but now that I have remember how she said that when she rode Arion she didn't feel the bonds of her curse? I now think it will be Arion.