Anais Errrrrr Watterson is one of the main characters of The Amazing World of Gumball. She is the youngest member of the Watterson family and the most rational, despite her young age - only four years old. Anais is clever because she wears warm clothes in our fanart The Amazing World of Gumball Anais Watterson in Winter Clothes Sticker from the first day of winter. So should you.