Despite its large size, the condroni is slow-moving and physically vulnerable.^ȶ Its flesh can be cut apart with ease, and blunt impacts cause its eye markings to bruise and become bloodshot. When injured, it regenerates slowly (taking several days to heal from even a two inch deep cut), but without scarring or other lasting effects.

The condroni emits no odors, leaves behind no residue on its surroundings, and does not speak or make noise in any way.

The condroni appears on the tops of skyscrapers and other tall structures of above fifty feet in height. Within an infested city, the condroni can always be found atop the tallest 0.5% of such buildings, as well as 36% of the tallest 5% of buildings. This strain also appears on any radio or broadcasting towers able to support its weight, its tail coiled around the lattices and cables.

When the stranger first generates, its form is flickering and holographic. It takes anywhere from several minutes to several hours until it takes on physical solidity; this shift is abrupt, but visually unremarkable.

The condroni tends to appear in groups of up to thirty individuals. The size of the group varies depending on a number of factors – the height of the structure, the number of antennae or satellite dishes nearby, the density of cellular signals, the number of neon words of over two car-lengths in height, and so on.

The condroni and ladroni are the only two strangers which appear in 100% of infestations. Thus, when there are no valid structures of suitable height, stranger infestations cannot occur.

The condroni's disposition is intelligent and omnipotent. It remains motionless most of the time, keeping its tail curled around its body or nearby objects, and its head upright. The stranger adjusts its position^ə in random and infrequent intervals, and very rarely, uses its thin claws to scratch small, but intricate lines^ɘ into nearby surfaces.

The condroni's presence disrupts and distorts waves on the electromagnetic spectrum between 10Hz and 750THz – a range which includes television, AM and FM radio, visible and ultraviolet light, mobile phone, wireless data, infrared, remote control, radar, and sound waves.^Ƹ

The condroni's brain matter absorbs, mutates, degrades, and retransmits waves which pass through it. After passing through the condroni's brain matter, all signals manifest with anomalies. Television images may appear to freeze or move backwards, or single words within a song on the radio may repeat themselves over and over (even as the background instrumentals continue). The majority of abnormalities are subtle enough to either go unnoticed, or be dismissed^ƃ as a side-effect of fatigue, stress, or inebriation. Thus, the condroni's censorship of humanity remains minute and insidious.

Animals wearing radio collars or embedded microchips are susceptible to the strain's influence. These affected animals may show aberrant changes in behaviour, such as growling at inanimate objects, running in circles, or refusing to leave a specific corner of the yard or room of the house. This effect fades once collars or microchips are removed from the animal.

The condroni specifically appears in places that cannot be easily reached - leaving few opportunities for direct interactions. When approached, it grows somewhat more animated, but does not move.

Despite the condroni's physically vulnerable form and lack of defenses, this strain is difficult to assault due to its effect on the human brain at close proximity. Within one hundred feet, it causes anxiety and paranoia; at close range, causes audiovisual hallucinations, delerium, and seizures.

The condroni is ambivalent towards most human corpses, but will always turns to face a sensitive's corpse. Its uses its hands to sign continuously until the body is either removed, or until the corpse's brain decays to a suitable point.

The condroni's brain tissue grows continuously over the course of its life. Eventually, it becomes so dense that tumors and other physical abnormalities develop – leading to aneurysms and seizures. A seizing condroni broadcasts signals powerful enough to short out electronic equipment within its block, it dies with a final outburst, the last pulses of its brain causing a blackout within a 0.8-1.7 mile radius that may last several hours. Following this event, the condroni's sides split, and its brain matter spills outwards. Rarely, the condroni remains alive following this massive injury, and makes weak attempts to hold itself together, even as its jerky motions slow. Its death is expedited by neighboring condroni, who grab handfuls of brain matter and smear them upon the ground in a halo-like formation around the fallen companion's head.

The dead condroni's body decomposes at a brisk rate. The flesh turns grey and shrivels up beneath the skin, and the eye markings fade away. Within six to thirteen hours, only the skin remains. Other condroni press their hands against the scraps that congeal into grey sludge, then raise them to the sky, before returning to their silent affairs.