CRISPIN BOYER has authored over 15 books for National Geographic Kids, ranging from bugs to boogers, ninjas to knights, sharks to cyborgs, and everything in between. Crispin's inaugural middle-grade fiction series, Zeus the Mighty, blends his ability to entertain with vivid characters while also educating with historical truths. After 15 years as a visual designer for video games, ANDY ELKERTON pursued his longstanding passion of becoming an illustrator. Since then, he's worked on illustrations for publications, television shows, toy design, advertising, and several children's books, including a New York Times and Barnes & Noble best seller. He's even been on Jeopardy! as a response to a question.