User blog comment:Darkcloud1111/Son of Neptune Chapter Two Video Discussion/@comment-86.166.41.116-20110912193031

It never stated that Athena, Ares or Hades are deffinately the parents of Frank, Hazel and the unknown demigod. They do represent them but it could either hint the parent (such as hades could represent Hecate), be them (I'm pretty doubtful), be a red herring (quite likely) or just state main gods from the other series (: