Miriam "Mimi" Mortin is a young, freckle-faced girl in the sixth grade. She is 11 years old and has a clever, optimistic within a powerful imagination. She is always willing to help and solve any problem that she may encounter all the time, adding with creative plans and ideas. Although her plans may not always work out the way she expects them, Mimi receives a lot of help from her best friends, her family, so even her rivals, and finds a way to solve any problem. She is voiced by Chiara Zanni.