Bolshoi Ballet Slipper
The Bolshoi Ballet Slipper (actually a pair of slippers) is an item in the NES and SNES releases of Mario is Missing!. They are a part of the ballet shoes used by the Bolshoi Ballet. Though its item name indicate a single slipper, its image and various dialogue about the shoes indicate that the item is a pair of slippers. They are stolen from the Bolshoi Theater by a bunch of Koopa Troopas invading the city of Moscow; this causes the entire theater to be shut down. Luigi later takes them back from the Koopa Troopa that was holding onto them, and as he does not know where they belong, he shows them to various citizens throughout the city. Everyone recognizes it as belonging specifically to the Bolshoi troupe, with the police officer in particular telling Luigi to return them before their show begins. Luigi eventually learns enough to bring them to the Bolshoi Theater's information booth, reopening the building and being awarded $1500. In the DOS and Deluxe versions, the slippers are replaced with the Bolshoi Ballet Tutu.