The leuridrene /ˈlʊrɪdriːn/ is a stunted stranger with a tubular body, liseran purple coloration, and petite limbs. Its anhydrous and rubbery skin radiates no particular temperature to the touch, and its flesh is butyraceous, ribbon-like, and, when pressed, exudes a stringy film. The leuridrene has no internal organs, although its flesh does become less fibrous and more chunky towards its inner section. Despite lacking external aroma, the leuridrene's contents become odoriferous when cut open, resembling overripe fruit or rotten meat, with the exact odor varying between individuals.

The leuridrene burns up when exposed to flame, and grows dry and brittle when exposed to either extreme calidity or algidity. It is unable to regenerate from injuries, but displays no bleeding and little progression of wounds, with its flesh parting neatly, like foam rubber.

The leuridrene speaks without opening its mouth. Its voice is almost always that of a young woman, specific words too muffled to be discerned.

The leuridrene appears in either fully or partially exterior environments, with vast stretches of grey concrete, flat walls, and industrial decor being common features around its point of generation. It displays a strong preference for caliginous settings, with most incidences occurring during overcast or drizzling weather, and grows more readily near large bodies of water (with 85% of leuridrene appearing within a half-mile of rivers, lakes, bays, or man-made canals.)

Within these nondescript places, the leuridrene grows from a pile of sludgy foam, which always froths upwards around an existing cylinder of under 2.2 inches in diameter, such as barricade poles, street signs, and fenceposts. As this foam coalesces to form the leuridrene's solid body, the head remains in intersection with the pole, locking the leuridrene in place.

During its first few hours of life, the leuridrene lies supine, its eye markings closed. During this time, it is completely non-reactive to stimuli. After one to two hours of dormancy (with activity often spurred by some loud sound in its vicinity), its eye markings widen, and it begins its squirm.

The leuridrene possesses an unembellished, yet persistent disposition. Due to its impalement, it remains trapped in place, and thus, is only able to writhe and swivel in random turns. Though the leuridrene, at times, scratches at this pole or yanks its body back in an effort to free itself, it can find no triumph in these endeavors, and never attempts to destroy the pole. Similarly, the stranger never tugs its body hard enough to cause itself physical harm, with the only side-effect of its dragging being an orbital path on dirt surfaces.

The leuridrene quivers in response to loud sounds, but does not react readily to other stimulus, and ignores both animals and other strangers. During more calm stretches, the leuridrene clenches and unclenches its hands, or wraps its prehensile tail around nearby objects (seeming to take some pleasure from twining its tail or body around any poles in reach). Otherwise, the strain remains subdued, its effect on the world minimal.

Though not avidly social towards sensitives, the leuridrene is good-natured, and does not resist handling. It does not react in any way to injury, and can even be tortured without any pain response. Its mouth can also be pulled open, and the leuridrene will latch onto any finger placed into its open maw, although its small teeth and low biting strength are unable to break skin. Though the leuridrene does not bite things on its own, this clenching response occurs towards other small objects placed into its mouth, as well – if a small object (such as a pebble or a bottle cap) is placed upon its tongue, the leuridrene will hold onto it until its death, or until the object is forcefully extracted once more.

The leuridrene can be freed from its entrapment via the interference of a sensitive or other outside effort. The pole slides out with little difficulty, the hole closing up and leaving no mark behind. Once liberated, the leuridrene spends the rest of its life meandering with desultory concern, its attention drawn to random attractions within its environment, and only a minutes at a time. The leuridrene does seem to display a conspicuous pull to waterbodies, falling into those that it encounters. Although its flesh is buoyant, the strain does not appear able to survive prolonged contact with water, and dies after several minutes of eager but futile splashing.

Despite the muted enthusiasm that most leuridrene display upon release, 34% of individuals do exhibit both a continued timidity, as well as a recurring magnetism to subsequent pole-like objects, against which they will push their head and neck as though trying to merge with these objects once more. The leuridrene remains persistent in these attempts, and, when pulled away from these objects by an outside force, returns with renewed ardency as soon as it is able. This criteria for pole-like objects can be somewhat vague, though, with the occasional leuridrene attempting to intersect even a sensitive's leg.

Though physically harmless, proximity to the leuridrene causes sensitives to forget a handful of low-frequency words, an effect accompanied by a stinging pinch directly behind the right eye. The strength of this effect grows slightly when the leuridrene is released, but does not persist following the encounter, and all forgotten words can be re-learned once the sensitive is exposed to them once more.

On the final day of the leuridrene's life, its eyes close up and its struggles cease. It dies with a sudden, corybantic twitching and shudder, its legs spasming and its body and tail coiling. Its corpse softens into silterinic clots, and its stench grows olid enough to elicit a tearing of the eyes, and an involuntary clenching of the throat.

The scabbing encrustation of the leuridrene's remains can be peeled away and broken apart as one would foam rubber, but takes many hundreds of years to moulder altogether.