The xinxidride (/ˈzɪŋksɪdraɪd/) is a gaunt-bodied, long-limbed stranger with a white body and colored head and forelimbs. Though not producing fluid, its surface is slippery enough to make the xinxidride all but impossible to grab onto. Despite this bodily slickness, its black-footed limbs are tacky, leaving behind faint, dark prints upon certain surfaces beneath it1.
Blunt impacts bruise the xinxidride's surface, with thick, black lines radiating outward from these blemishes. The skin resists cutting, however, with even sharp blades doing little to pierce its surface. Once its inner core is exposed, the xinxidride's dark and gelatinous inner flesh first oozes outwards, then congeals. This substance is pungent-smelling when first exposed to air, but loses its odor as it dries, retaining only the faint smell of alcohol from its otherwise unidentifiable mix of odors2. The xinxidride heals only once these drooping, gummy globs are torn off. Otherwise, it resists all change in temperature, but is so flammable that even a half-second of exposure to a lit match can cause it to ignite in full.
It does not speak.
The xinxidride spawns in deep isolation, generating within sites unvisited by human beings for at least one year. It prefers rooms dominated by a single color, with all-white being its most common site of generation, though any monocolor site can be a likely point of generation.
The xinxidride's coloration is influenced by the color of the room in which it generates, although it is limited to four varieties; black-headed, yellow-headed, magenta-headed, and cyan-headed. It takes on whichever of these colors most closely matches the hue of its surroundings.
The xinxidride behaves as though acting with an unashamed tension. It moves towards any novel stimulus within its environment, observing these objects, sounds, odors, activities, lights, and other items of interest, but does not interact with its environment directly. It is fearless as it approaches these targets, but maintains a nervous demeanor, its steps small when it moves, and one hand wringing against the other as it stands still. It balances its weight precariously, unable to lift its head upwards, with all brief and swaying attempts leading only to a jittery imbalance.
As the xinxidride appears in isolated areas, it tends to quickly exhaust all available points of interest within its first few weeks of life. Upon cessation of novel stimulus, the xinxidride stops moving, the tip of its head resting upon the ground as its body shakes. It emits a deep, bellowing thump from its mouth every half hour, which is well outside the range of human hearing, but which is powerful enough to unsettle dust within the xinxidride's environment (or occasionally knock a precarious object from the wall, thus drawing its interest once more).
This periodic emission incurs, as a byproduct of this pulse, minute errors in photocopier-produced print-outs within a quarter mile radius, as well as in digital printers within 115 feet. These errors tend to manifest as smudging, horizontal lines or gaps, or misaligned color channels in the majority of instances, with a small percentage causing tiny blue squares to appear on the edges of the page.
The xinxidride grows slowly but continuously over the course of its life (each xinxidride growing one to three inches in height at a constant rate), but does not exceed more than twelve feet in height. The larger it gets, the more evasive it becomes, attempting at first to hide its face, then its body, if able. Its inner fluid, as well, grows more pungent over time as a by-product of its growth.
A roaming xinxidride displays the same curiosity towards a sensitive that it would any other new phenomenon, watching from a distance, but growing bored within the hour, its interest never returning.
A xinxidride which has already placed itself into a stationery position, however, displays no such curiosity. Disturbing a stationary xinxidride's position causes it to grow aggressive, this temper escalating gradually. It first pushes the sensitive's shoulders, or grabs objects from their hands and throws them to the side well before it attempts to defend itself directly. The xinxidride remains visibly tense during these interactions, its shoulders bunching, all movement accompanied by continuous soughing and sighing.
With no distinct bodily signs of aging, the xinxidride instead loses its curiosity and instead grows more jumpy in response to stimulus, until it dies suddenly. Its body dissipates into a steam that matches its bodily coloration, this steam hanging in the air for ten to thirteen minutes, before settling on nearby surfaces as a pigment that stains that which it touches.