User blog comment:StaticAura/Heroes of Olympus: The Seven Demigods. Greek+Rome?/@comment-76.71.29.135-20120218001457

Obviously the first 6 are Percy, Jason, Piper, Leo, Frank and Hazel. The seventh one could be Annabeth considering that the next book is'The Mark Of Athena' or Nico considering then the big three children will all be there(Percy- Poseidon, Jason- Zeus Nico-Hades) it also has a slim chance being Thalia. BUT, also considering there is three books left, a new character has a chance of coming in and taking the role of the seventh hero. I give the chances 45%- Annabeth, 10%-Nico, 5% of Thalia and 40%- A new character. -Vetriz