User blog comment:Hazelcats/Boredly Surveying, Nov. 19 - HAPPY THANKSGIVING!/@comment-3146930-20111128165625

For the who am I, it could also be Katie Gardner as she only appeared in The Last Olympian and was replaced by Miranda with no explanation. Zoe only made an appearance in The Titans Curse, but was mentioned a few times, but she was only seen in one book. Nyssa acted as head during The Lost Hero but wasnt seen before. You'll have to be more specific.