Like the title has suggested, this is my great seven that go on the quest, and why.
1. Leo Valdez
Not only does it metion that she is one of the seven in the book, Leo also is a fire user, and that would make him one of the best Demi-Gods of all time.
2. Piper McLean
Not only does it metion that she is one of the seven in the book, Piper is a Charmspeaker. On top of that, I believe we all know Jason is one of the seven. So we need a good love triangle. (SEE, Reyna)
3. Percy Jackson
Rick Riordan does not want to wake up a force more dangerous than Gaea herself- Percy Jackson fangirls. Also, Percy saved the world, no big deal. But that doesn't mean he is one of the greatest demi-gods, right?
4. Annabeth Chase
Same as Percy, but also, they need knoledge on their quest.
5. Jason Grace
Not only does it say he will be one in the book, but he is a son of frikkin ZUES (Jupiter), also, he is needed for that love triangle (SEE, Piper McLean, Reyna). Lastly, we could see a Poseiden-Zues (Neptune-Jupiter) battle between him and Percy.
Don't know anything about her, but LOVE TRIANGLE!!
This is a mystery. However, this is what I am thinking. LOVE TRIANGLE! Oh, gee, if this is what happens, Rick is very evil. 2 love triangles in one series. Percy sees a girl he likes, and she is one of the seven. LOVE TRIANGLES! Oh, what fun speculating is!