Space Brat
The Space Brat book series includes Space Brat, Space Brat 2: Blork's Evil Twin, Space Brat 3: The Wrath of Squat, Space Brat 4: Planet of the Dips, and Space Brat 5: The Saber-toothed Poodnoobie.
According to comments from the author, Bruce Coville, the first Space Brat story version was written in 1977. He intended to make it a picture book, and his wife (Katherine Coville) even drew a few sample illustrations. The editor disagreed with this idea, however, saying he "didn't think kids would be interested in reading about a noseless green humanoid from outer space." Ironically, this was a few years before Steven Spielberg's movie E.T. was released.
The series revolves around the adventures of young Blork, an alien who got labeled a brat after he hatched because a piece of his eggshell got stuck behind his ear and he would not stop crying. Because he was labeled a brat, people come to think of him as one. As a result, he was always getting blamed for things, even if they weren't his fault. As he grew older, Blork decided to use this to his advantage. Blork's best friend and constant companion is his poodnoobie, Lunk, who hatched late from his egg and is not the brightest animal in the galaxy. The series follows Blork's misadventures as his brattiness gets him into trouble (and, subsequently, out of it).