User blog comment:SayuriDarling/Full first chapter of The Mark of Athena/@comment-96.247.208.214-20120901191114/@comment-3146930-20120903032932

I don't think Calypso will be in The Mark of Athena. Rick has been somewhat open about who will be in the book, mentioning Nemesis and releasing the character images early. He only mentioned that Calypso will appear in the series, without mentioning any of the books. If she does appear later, hopefully she will get an official image.