User blog comment:It-Freaking-Melts~11!!/New Characters for Sons of Neptune Decoded/@comment-3974711-20110909133216

Nah don't think it's Diana. Rick stays pretty close to the myths, and I don't think he would make something up just for the story. Credibility would be lost. i don't imagine it being Apollo either, as he was never really seen as a signature Olympian, and he's usually in a pair with Artemis. The strongest bet is still Mars.