Mr. Men Roger Hargreaves died in 1988 and his son Adam was to take over the franchise. When these books were released in the United States, several terms were changed to their American terms. In France, illustrator Colette David and writers Viviane Cohen and Evelyne Lallemand produced a number of new characters that were not released anywhere else in the world. The characters 'Mr. Crosspatch', 'Mr. No', 'Little Miss Yes', 'Little Miss All-Goes-Well', 'Little Miss Loud', 'Little Miss Careful', 'Little Miss Brilliant', 'Little Miss Busy-Body', 'Little Miss Vain', 'Little Miss Prim', and 'Little Miss Selfish' were only released in France and Greece
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