Mr. Happy is a fictional character created by Roger Hargreaves, known for his cheerful personality and bright orange appearance. He is part of the Mr. Men series, which features various characters, each representing different emotions and traits. Mr. Happy is characterized by his big smile and round shape, symbolizing joy and positivity. In the stories, Mr. Happy often spreads happiness to those around him. He lives in a whimsical world filled with other Mr. Men and Little Miss characters, each with their unique characteristics. His adventures typically involve helping others find happiness and teaching valuable lessons about kindness and friendship.