 The "Chronicles" books are unique amongst the "Animorphs" continuity in that they are told from previously largely unfamiliar aliens' perspectives, and not from one of the 5 main human points of view (nor Ax's, after being introduced), bar the beginning and end of "The Hork-Bajir Chronicles", which are narrated by Tobias.All four books feature artwork by Romas Kukalis on their covers.The Andalite Chronicles takes place before and leading up to the events in "The Invasion".