Mrs. Sanderson is the wife of Mr. Sanderson and the mother of Jenny Sanderson. She doesn't like the fact that her husband keeps spending money on toys despite him quitting his job. With the buying of Chibi-Robo, she forces her husband to sleep on the couch. When she sees how much work Chibi-Robo is doing, she jokes by saying she should've married it instead of Mr. Sanderson. Mrs. Sanderson is driven over the edge when her husband buys a new toy. She locks herself in her room and asks for a divorce.