Mr. World is a character from the Mr. Men book series created by Roger Hargreaves. He is depicted as a cheerful and friendly figure who embodies the idea of being worldly and knowledgeable. His character is often illustrated with a round shape and a big smile, representing his positive outlook on life. In the stories, Mr. World enjoys exploring different cultures and sharing his experiences with others. He often encourages his friends, like Mr. Happy and Mr. Tickle, to appreciate the diversity of the world around them. His adventures promote themes of friendship and understanding among different people.