Mark of Athena is on the way, you'll see the changes in that series and how some girls joined. House of Hades and Blood of Olympus might be combined since I don't know much on what can change. Only know for BoO is how Kym joins and Artemis

What the title means is that in the other Rick Riordan series, such as the Kane and Magnus trilogies, Percy was introduced to the Egyptian and Norse worlds respectively. I was wondering if there are goddesses or female characters that could potentially join Percy's harem.

Since the Greco-Roman worlds mixed with Egyptian, it is most likely that the gods of both worlds met. Any ideas on the those characters getting in the harem, review this or PM me for ideas. Like...I don't know, the Egyptian goddesses use Sadie for a conduit to get laid or use new girls