What is the relationship between Du Fei and Meimei?

The relationship between Shirley May and Duffy in Disneyland is a friend and one of Disney cubs. Duffy's face is a Mickey pattern. In addition, there is a Mickey pattern on his hip. In Tokyo Disney Ocean, it is sold as a commodity, and Duffy, which is sold as a commodity, also has Mickey patterns on the soles of his feet. However, when the role of Tokyo Disney Ocean welcomes guests (taking photos with tourists, etc.), Duffy's sole does not have Mickey's pattern. ).