Missie Mouse (JP: Fee Mouse) is a 3-year-old friend of Patty Rabbit and the daughter of Mr. (JP: Lodi Mouse) and Mrs. Mouse, owners of a repair shop located in their residence, the Clock Tower/Windmill. She is also the sister of Marty Mouse (JP: Arthur Mouse). She was voiced by Nagahata Yumi in the Japanese version.
Missie is kind, shy, and quiet. She enjoys being at the repair shop her family owns since her father allows her to pound the hammer and watch him work. Her favorite foods are cookies and ice cream.