Mr. Men The Night Before Christmas is a festive story featuring the beloved characters from the Mr. Men and Little Miss universe, created by Roger Hargreaves and continued by his son, Adam. This book puts the familiar, humorous characters—like Mr. Happy, Little Miss Bossy, and Mr. Grumpy—into a narrative based on the classic The Night Before Christmas poem. The story describes the characters' comical preparations for Christmas Eve and their reactions to a surprise visit from Santa Claus. The humor is derived from the characters' exaggerated personalities reacting to the traditional holiday setting.