Michael Rex is an American author and illustrator of children's books, known for his humorous and engaging style. He has written and illustrated numerous books for young readers, including parodies of classic tales, like "Goodnight Goon" (a parody of "Goodnight Moon"), and original works such as the "Fangbone! Third-Grade Barbarian" series. Rex's works often feature playful illustrations that appeal to children, and he has gained a reputation for creating books that are both entertaining and accessible for early readers. His appeal extends to various age ranges, with picture books for the very young and chapter books for more advanced readers.