The Ellimist Chronicles

The Ellimist Chronicles is a children's science-fiction novel, a companion book to the Animorphs series written by K. A. Applegate. It tells the backstory of the Ellimist, a god-like being from the story. The introduction shows that the Ellimist is telling his story to an unnamed, dying Animorph, foreshadowing the events of the final book of the series.