User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-122.167.9.98-20130516054635/@comment-120.145.211.87-20130524235303

Percy CAN'T die. I know some of the characters will though: My speculation = Nico will close doors of death from the inside (oath to keep with a final breath, he promised Percy he'd meet him on the other side). I also think Frank and Hazel will die by the end of the seris as quite a few Gods have told Frank his life will be short, and Hazel because she's already supposed to be dead meaning she is more likely to sacrafice herself like she did for her mum.