The Dodecahedron is a shape with twelve faces, each one showing a different expression. She lives in Digitopolis and loves solving problems. When Milo, Tock, and the Humbug first met her, she was confused about the fact that Milo had only one face and asked if everyone with one face was called a "Milo". She led them to the Numbers Mine and there they met the Mathemagician, who oversaw a lunch break. It turned out to be... what else... subtraction stew! And she explained the whole eating concept of Digitopolis to the three hungry friends. The Mathemagician erased her away later. She appears later at the big celebration. In the movie, she only asks riddles to Milo to open up the passageway to the Numbers Mine.