Mr. Greedy is a children's book by Roger Hargreaves, part of the popular Mr. Men series, about a character who loves to eat everything in sight and learns a lesson about overindulgence after a giant forces him to eat a massive meal, resulting in him becoming much thinner and promising to never be greedy again. The story teaches a moral about moderation, and the character is known for his large appetite and round shape, which changes by the end of the book. Key aspects of the book: Author: Roger Hargreaves. Series: Mr. Men. Plot: Mr. Greedy's insatiable appetite leads him to a giant's cave where he is made to eat enormous amounts of food, teaching him a lesson about gluttony. Moral: Don't overeat; moderation is key. Character arc: He starts very fat and ends up thin after learning his lesson.