Download or read book The Unofficial Heroes of Olympus Companion written by Richard Marcus and published by Ulysses Press. This book was released on 2011-10-18 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the gods, goddesses, and mythical animals that figure in the novels of Rick Riordan, including the Heroes of Olympus series and the stories about Percy Jackson.