Microtizer

The Microtizer is an item manufactured by Nightmare Enterprises that, just like its name suggests, has the power to shrink anyone to a size about as small as the smallest insect. King Dedede bought this item for the purpose of shrinking Kirby to send him inside his body to fight the Cold Viruses that were making Dedede sick. The effect of the Microtizer naturally wore off when Dedede sneezed Kirby out of the inside of his body before he could suck up all of the Cold Viruses.