User blog comment:StaticAura/Heroes of Olympus: The Seven Demigods. Greek+Rome?/@comment-81.156.163.90-20111229110858

The 7 will be Jason, Hazel, Frank, Annabeth, Percy, Leo and Piper, but then I think there will be others that help them (eg. Nico, Tyson, Grover etc.)! I can't wait for the next book!! :D