Masumi Momono 「百野真澄, Momono Masumi」 appears only in a special chapter of Yu-Gi-Oh! R. He, along with his two lackeys, form the group known as "Store Breakers", Duelists who go from store to store, taking control of them and stealing rare cards. Like the Card Professors, Masumi Momono is named after the codename for a microchip: the 1.266 GHz Flip Chip Pin Grid Array (FCPGA2) Pentium III (P3-850) microprocessor.