Moomin is a series of characters created by Finnish-Swedish author Tove Jansson. The stories revolve around the Moomins, a family of gentle, round creatures who live in a peaceful valley. The tales explore themes of friendship, adventure, and the importance of nature, appealing to both children and adults. The Moomin universe includes various characters, such as Snufkin, Little My, and Hattifatteners, each with unique personalities and quirks. The series has been adapted into animated shows, comics, and merchandise, making Moomin a beloved cultural icon in many countries around the world.