Giga-Mites are invasive and can be found all over the Blue Rooms, no matter what the color (although they have been reported to change color according to the light level). 

Giga-Mites get a 7/10 on the danger scale. Giga-Mites can tear through breakable walls, spit mild acid, and have extraordinary senses. Giga-Mites dig through human skin, much like normal mites, but because of their size, it is noticeable and very painful. Giga-Mites are also very aggressive and will attack visitors and even other entities at will. However, they will not attack particularly strong entities like Ragazza del Giardino, indicating an entity food chain.

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Giga-Mites' weakness is sunlight; they will actively draw away from sunlight (and only sunlight), as their bodies are not capable of processing Vitamin D.