Quite some time ago, I created a postal for those that live in the dark underbelly of society...a special breed of people that like to lurk in the shadows, observing without sound and leaving no trace of their presence behind. These folks, even with their awareness of all that is deep and dank, had no knowledge of the Scourge & Vermin that lived in the Underlevels of Coruscant.
Lying hundreds of stories below the skyscaper pinnacles, Coruscant's urban canyon floors never see the light of day. A realm of artificial illumination, the lower levels of the galaxy's largest city are the only affordable areas for many of the planet's citizens. Rumbling with machines that serve the elite above, its streets haunted by exploiters and thugs, and its walls riddled with weird vermin, Coruscant's underworld toughens the strong and consumes the weak.
Stone mites are a scourge of cities and starships alike, picking into raw metal plating with their wire-cutting jaws and acid saliva. Complex electrolytic reactions fuel their metabolism and harden their exoskeletons. Suspected of being the products of military genetic engineering, three stone mite individuals link to form symbiotic trionts, excreting a common globular shell.
Vermin from every corner of the galaxy infest the underworld. Duracrete slugs are inadvertently brought in on freighters and in offworld cargo to the world-city, where they live off of the artificial structures. Normally reaching three to five meters in length, they have been in reported at colossal sizes of over ten meters in Coruscant's underlevels.