LoadedDisk
The LoadedDisk (JP: ﾃﾞｰﾀﾃﾞｨｽｸ Data Disk) is a Key Item introduced in Chapter 2 of Deltarune. It is received in Spamton's shop after Spamton transfers himself into the EmptyDisk.
To continue the questline for Chapter 2's Shadow Crystal, Kris must take the LoadedDisk into the Basement of Queen's Mansion and insert it back into the broken robot. Spamton then transforms into Spamton NEO and attacks Kris. Susie and Ralsei arrive to help, and the three battle Spamton NEO as Chapter 2's Shadow Crystal boss.
Kris can also attempt to put the LoadedDisk inside the Mannequin (which resembles Spamton) in Cyber City. However, it "squirms" and does not fit. The LoadedDisk has no unique interaction with the Mannequin in Castle Town, despite it seemingly being the same mannequin.