Ingstorm

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Ingstorms are microscopic Ing that attack on contact. The Ing usually use them to guard an area that needs to be accessible, but also strictly defended. Individually, these small Ing particles cause about as much damage as a pinch. But banded together, they can corrode even the strongest known alloys. Samus's suit being made of one such alloy, these Ing will rip right through it's armor, even when equipping the Dark Suit. The only way to pass through the "storm" of Ing particles harmlessly is to aquire the Light Suit. Ingstorms turn red and move away when approached when wearing the Light Suit.

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"The Ingstorm is a collective swarm of tiny Ing. When banded together, they can emit destructive energy that, over time, can break down even the most duable of alloys."