User blog comment:MzDaNi92/New release date info The Son of Neptune./@comment-174.27.107.55-20110222234822/@comment-72.189.11.146-20110405183432

Rick Riordan already raid that Percy was the "Son of Neptune". So you are wrong, about someone else being, the "Son od Neptune". But, there could be some Half Brother's or Sister's there.