User blog comment:StaticAura/Heroes of Olympus: The Seven Demigods. Greek+Rome?/@comment-4716068-20111229100456

I think it will be: Jason Piper Leo ( Chiron said in 'The Lost Hero' that these 3 are sure to be in the Phophecy 7) Percy ( The 2 gods said something that he has a big job to do in this - the Prophecy 7-. It is like they said that he will be involved. And, somewhere in the 'The Son of Neptune', someone said[ I don't remember who] that he will be the one who will  stick the team together. he will be the glue.) Annabeth ( The next is 'The Mark of Athena' so that's it I think. And Percy will want that Annabeth is with him.) Hazel Frank ( Their in 'The Son of Neptune' New friends of Percy)

But I think Reyna should join them. I'm still not sure......