Pikachu
As a digital entity, Pikachu exists primarily in the immaterial realm, granting it theoretical immortality. The creature cannot be punctured, degraded by ultraviolet radiation, or consumed by household pets. However, this same intangibility means Pikachu's physical manifestations, plush toys, figurines, and trading cards, remain subject to the same entropic forces that govern all matter.
Pikachu merchandise has demonstrated variable durability. Premium collectibles housed in protective cases have maintained pristine condition for decades, whilst standard plush iterations show significant wear after merely 2-3 years of active child companionship. The digital Pikachu, meanwhile, persists indefinitely across save files and cloud storage.