K. A. Applegate
American fiction writer (born 1956)
Katherine Alice Applegate, known professionally as K. A. Applegate, is an American young adult and children's fiction writer, best known as the author of the Animorphs, Remnants, and Everworld book series. She won the 2013 Newbery Medal for her 2012 children's novel The One and Only Ivan. Applegate's most popular books are science fiction, fantasy, and adventure novels. She won the Best New Children's Book Series Award in 1997 in Publishers Weekly. Her book Home of the Brave has won several awards. She also wrote a chapter book series in 2008–09 called Roscoe Riley Rules.
via WikipediaBooks (29)
The Encounter
Book 3
The Arrival (Animorphs #38)
The Attack (Animorphs #26)
The Capture (Animorphs Graphix #6)
The Change (Animorphs #13)
The Conspiracy (Animorphs #31)
The Deception (Animorphs #46)
The Departure (Animorphs #19)
The Diversion (Animorphs #49)
The Ellimist Chronicles (Animorphs)
The Exposed (Animorphs #27)
The Forgotten (Animorphs #11)

The Hidden (Animorphs #39)
The Message
The Mutation (Animorphs #36)
The Prophecy (Animorphs #34)
The Resistance (Animorphs #47)

The Return
The Sacrifice
The Sacrifice (Animorphs #52)
The Secret (Animorphs #9)
The Separation (Animorphs #32)
The Solution (Animorphs #22)
The Stranger (Animorphs #7)
The Suspicion (Animorphs #24)
The Unknown (Animorphs #14)
The Visitor (Animorphs #2)

The Warning (Animorphs #16)
The Weakness (Animorphs #37)