Shadow Bugs are the tiny, glowing, violet spheres. Members of the Subspace Army are made by swarms of Shadow Bugs. Shadow Bugs were created by extracting a mysterious substance from Mr. Game & Watch. Tabuu captured him to make him become the source of the Subspace Army's soldiers. It's hypothesized that Shadow Bugs create the props that Mr. Game & Watch uses in all his attacks. Most comon enemy created from Shadow Bugs are Primids.