Animorphs Chronicles

The Animorphs Chronicles is a series of 4 books written by K. A. Applegate alongside the main series as a companion collection to detail the backstories of characters introduced in the series, and help explain and expand upon concepts that were briefly defined in the series, but, as the series is told from a human point of view, were limited in terms of what could only be explained through in-story dialogue. Four Chronicles books were published; The Andalite Chronicles in 1997, The Hork-Bajir Chronicles in 1998, Visser in 1999 (the only Chronicles book not to feature the word in its title), and The Ellimist Chronicles in 2000. 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. It is narrated by Elfangor-Sirinial-Shamtul, or, as he is later known, Prince Elfangor. It begins with him uploading his memory into the computer before facing Visser Three at the abandoned construction site. The rest of the book is then a flashback of Elfangor's personal history, beginning with him as an Aristh, a warrior in training, and ending with him at the construction site.

Elfangor and his fellow aristh Arbron rescued two humans from the Skrit Na: Loren and Hedrick Chapman. They were assigned to return them to Earth under the leadership of a disgraced War-Prince, Alloran-Semitur-Corrass. However, upon realizing the Skrit Na were in possession of the mythical Time Matrix, they were forced to go after it. Arbron became trapped as a Taxxon, and Elfangor became responsible for Alloran's infestation. Eventually, Elfangor, Alloran and the Yeerk controlling him, and the humans fell into a black hole. They were forced to use the Time Matrix to escape, which took them to a fragmented universe created from Elfangor, Loren, and the Yeerk (now Visser Thirty-Two)'s memories. Elfangor and Loren were able to escape to Earth, where he permanently morphed a human and stayed in that form. He married Loren some time later, but just before she gave birth to Tobias, the Ellimist repaired Elfangor's "timeline" and returned him to the Andalite homeworld. Elfangor went on to become a great Andalite hero, leading to the events of the first Animorphs book, where Visser Thirty Two, (Esplin 9466 the Greator) having somehow escaped the collapsing universe, has been promoted to Visser Three.

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