User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-4649443-20130614032639/@comment-3146930-20130616004708

...No comment. Also, Rick Riordan already gave me cameos in The Last Olympian, The Lost Hero, The Son of Neptune and The Mark of Athena. I mean he mentions dark clouds in all those books, and considering I am the god of dark clouds, when me talks about dark clouds he is really talking about me.