Mr. Men Mr. Men Mr. Men is a series of children's books by English author Roger Hargreaves commencing in 1971. From 1981, an accompanying series of Little Miss books by the same author, but with female characters were published. A similar series of animal characters known as Timbuctoo started in 1978. After Hargreaves's death in 1988, his son Adam Hargreaves began writing and illustrating new Mr. Men and Little Miss stories like "Mr. Good", "Mr. Cool", "Mr. Rude", "Little Miss Scary", "Little Miss Bad" and "Little Miss Whoops". Each book in the original Mr. Men and Little Miss series introduced a different
Mr. Men agreement to acquire the rights to the Mr. Men and Little Miss characters from Chorion after the company was forced into administration. This marked the first time that Sanrio had licensed a third-party character since owning the rights to Osamu Tezuka's Unico character in the late 1970s and early 1980s, which was returned to Tezuka Productions after Tezuka's death in 1989. They also own the rights to the Peanuts characters in Japan. In 2016, four new characters were launched to celebrate the series' 45th anniversary, Mr. Marvellous, Mr. Adventurer, Little Miss Fabulous and Little Miss Sparkle. In addition, Adam Hargreaves