User blog comment:CardMaster2412/Seven Half Bloods Parent and Identities/@comment-3146930-20110827102957

While the Olympian week thing may not be true, until it is it has been what I've been basing my theories on (as theories can be changed based on new information). Percy I believe is one of the seven as he is one of the narrators for The Son of Neptune. We also already know the parents of Jason, Piper, and Leo. This new book introduces Frank, Hazel, and Reyna. Frank is most likely a son of Mars (Ares) as he is a master of weaponry, but just uses a bow as his main weapon (which is understandable, it isnt like you have to use a sword). That just leaves Pluto (Hades) and Athena (Minerva). I would say Hazel is a daughter of Minerva because in her picture, she is riding a horse, when it is shown that horses (pegasi to be more specific) hate Nico because he smells of death. As far as Reyna goes, I dont know if she is one of the seven,but may play an important role. People are suggesting she is a daughter of Trivia (Hecate) which I agree with. Like I said, my theories may change as the series go on