User blog comment:StaticAura/Heroes of Olympus: The Seven Demigods. Greek+Rome?/@comment-94.172.0.166-20110422154717

We know that Jason, Piper and Leo are part of it and i think Annabeth will be one because she's going with them to the Roman Camp. Percy will be one because the second book is called The son of Neptune aka Percy Jackson unless some new guy turns up and is claimed by Poseidon but its unlikely. The other two have to be Roman because Hera says the only way to defeat the giants is if the two camps unite. Therefore i reckon the other two will be Reyna because apparently she was Jason's girlfriend before he got his memory wiped and she also is the Roman equivalent to Annabeth because she is the daughter of Athena and the other Roman will be Bobby because he was apparently Jason's best friend. People are saying Nico and Thalia will be part of he seven but i doubt it because Nico was not even mentioned in The Lost Hero and Thalia will be off with the Hunters of Artemis. Although i do think they will be involved quite a lot as the series develops. It is possible the second book will be similar to the first except it will be based on the Roman camp. I mean for all we know Percy and some Romans could go off on their own quest and the Argo II might not even be mentioned.