User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-4902593-20130116105904/@comment-3146930-20130116112021

In the books, he doesn't even have power over the stars. While in mythology he was said to be the most powerful god, sometimes being said to be as powerful as all the gods combined, but in the series I don't think he is quite as powerful as none of the gods are as strong as they were when people believed in them.