User blog comment:SayuriDarling/The Mark of Athena Official Discussion/@comment-5562903-20121005194150

Okay, judging by not many roles in the book etc, I think it's fair to say that it's mostly likely the Romans (Jason, Frank and Hazel) will have POVs in The House of Hades. (All Greek POVs in The Mark of Athena)

Nico or Reyna may have one, to make a 4th. Reasons why:

Nico: Percy kind of made him the new 'team leader', to lead the other 5 to Greece for The Doors of Death. It makes sense to hear his opinion - maybe even hear what made Percy think hurt him permanently (SP)

Reyna: To hear her thoughts on the whole JasonXPiper thing, and the Romans attacking C H-B.

Thoughts? I'd love to hear others' opinions on this!

Another thing; the sacrfice Hera mentioned Percy would have to make.

Theory #1: What if a person has to die/sacrifice themselves on each side for the Doors to close?

Theory #2: (may/may not tie in with No. 1) If a child of the Big Three has to be on each side to close the Doors...

Theory #3 (ties in with No. 2): OR a child of Hades/Pluto has to be on each side to close the Doors.