Entity Number: 24
Habitat: Majority
Class: 1
A Wall Worm Infestation.
Description
Although numerous Wall Worm variants have been documented throughout the Backrooms, all have been described as long, thin worms which move in an undulating, pulsing rhythm that many describe as unnatural or robotic. The majority of these worms are said to resemble the common earthworm, but much larger in size, with the average measuring around 5 ft in length.
Wall Worms do however vary wildly in size, with possibly only the environment limiting how big they can get. Worms in Level 0 and similar levels will be, on average, around 40cm long and 15cm at the widest point (the midsection), whereas levels with large uninterrupted sections of material such as the ground of levels resembling the outside of the Frontrooms can have Wall Worms as large as 7 meters in diameter, with unconfirmed reports of worms "as big as a bloody mountain range"
Worm Core
Wall Worms are most infamous for containing robotic cores in their interior which serve as their life source. These robotic engines differ from worm to worm and are usually in a rusty state of disrepair despite remaining functional. Some Wall Worms have been described as thin layer of skin stretched out over a cylindrical mass of electrical wires that extend from their core, while others will have a small core buried deep within an extensive and otherwise natural epidermis of flesh. No Wall Worm in captivity or otherwise has been observed to die of natural causes, but they can be killed easily by destroying this inner core.
Worm Slime
Aside from providing the electrical pulses that allow Wall Worms to move, these corroded engines will also produce a corrosive, viscous slime of unknown chemical composition that allows Wall Worms to "eat" through almost anything. This residue displays highly acidic properties and is highly flammable, threatening to make entire colonies and outpost infrastructures unstable if a Wall Worm infestation is not dealt with immediately. If the flesh of the Wall Worm is damaged or removed, it will be fully regenerated within a period of 2 days via chemical reaction that causes a Wall Worm's acidic slime to congeal and coalesce into new layers of skin.
Habitat
Wall Worms seem to generally inhabit levels made from soft materials such as rotting plasterboard or dirt, which they spend their time tunneling through at speeds of up to 0.5 m/s. Certain variants have also been known to inhabit sections of levels made from much harder materials, such as concrete or metal, though these are far less common, and tunnel at a much slower rate than other Wall Worms.
Origins
Much speculation has occurred in regard to the origin of the Wall Worms within the Backrooms. The currently accepted theory is that Wall Worms are artificially created entities which emanate from somewhere deep in the Backrooms, created by some unknown intelligent entity for an unknown purpose.