User blog comment:Gingergreeney/OPINION 2/@comment-3146930-20120109205846

Norse mythology wasnt big on demigods, but they did have Norse heroes. It is possible that the new series will have people blessed by the Norse gods or something like in the Kane books with people carrying gods inside them.

The Heroes of Olympus series will end after the 5th book and depending on how it ends, it may or may not have a sequel. I dont think it will as patterns repeat themselves in the series, but nothing comes after the Giant war in mythology.