Third-person POV my beloathed.
HoO is the sequel series to PJO. It's written from alternating third-person perspectives, probably due to the sheer number of them throughout all the books. By the time you've finished The Blood of Olympus, you've read nine different POVs. While the choice to have so many perspectives makes sense, and allows the reader to see more of what's going on across a wider spread of events, I think it would have been better had each POV stayed in first-person.
One thing HoO does from the beginning that PJO distinctly didn't do is give more diversity to its cast, in multiple senses of the word. While KC was actually the first of Rick's books to do soemthing like this, HoO has a cast of seven (or nine, depending on how you count) main characters:
- Jason Grace
- Piper McLean
- Leo Valdez
- Percy Jackson
- Annabeth Chase
- Hazel Levesque
- Frank Zhang
- Nico di Angelo
- Reyna Avila RamÃrez-Arellano
Of these nine, only four could be considered white: Jason, Percy, Annabeth, and Nico. With the latter three of them being introduced in the first series, and Jason being related to another character in PJO, a reading of them as white makes a lot of sense and for most, if not all, of them tends to be the dominant perception.
The other five are canonically from different cultural backgrouds. Each of them are American (minus Frank), but Piper is Cherokee, Leo and Reyna are Latino, I believe is the proper term, Hazel is Black, and Frank is Chinese Canadian.
I am, unfortunately, painfully white. I can't exactly speak to the quality of the representation on the cultural side, but I've heard both good and bad from the groups they are intended to represent. The representation I can speak to is the queer rep, however. While multiple of the Seven/Nine are queer, and at least one other has queer subtext, I will be focusing on Nico specifically in the HoO section as he is the only one to come out in HoO.
And speaking of Nico's coming out, it's a perfect example of the worst way to do so. Intentionally so, I might add, the book does not frame this in a positive light. He's forcibly outed by Eros, in order to progress on their quest. Nico is bitter about this, he is distraught, he was not ready to come out.
He's also the first canonically queer character in the entire series, written years before gay marriage was legalized in the U.S.
Nico's coming out was handled flawlessly in my eyes, due to the way the characters react to this forced confession.