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 him, he was confused about the fact that Milo had only one face and asked if everyone with one face was called a "Milo". He led them to the Numbers Mine and there they met the Mathemagician, who oversaw a lunch break. It turned out to be subtraction stew, and he explained the whole eating concept of Digitopolis to the three hungry friends. The Mathemagician erased him away later. He appears later at the big celebration. In the movie, he only asks riddles to Milo to open up the passageway to the Numbers Mine.