Coalescipedes are purely black in coloration. Having eight legs, a fused head and thorax, and a larger abdomen, they resemble real-life spiders. They come in various sizes, and may join up with one another to form a monstrous Coalescipede chain.
Forming a Coalescipede chain in the presence of light
Coalescipedes are driven away by light, meaning that they are easy to avoid if the player uses a light source such as a Lantern, Lantern Mouse or the light emitted when a Neuron Fly is consumed. Coalescipede chains can be broken up into smaller, less aggressive segments with Spears or Rubbish, making them significantly easier to bypass.
Individual Coalescipedes and small chains are not aggressive - they become aggressive to a creature when the total mass of the Coalescipede chain exceeds the creature's. On average, a Coalescipede chain must comprise 8 or more Coalescipedes for it to become aggressive to the Survivor.
Coalescipedes are averse to light. They become agitated and scurry away from light sources such as Lanterns, held Lantern Mice, and environmental lighting. The more intense the light is, the more agitated Coalescipedes become and the faster they run away from it - the weak glow produced by undetonated Flashbangs and Slime Mold have little to no effect on Coalescipedes. Lantern mice, when not being held by Slugcat, hardly agitate Coalescipedes with the light they produce, and Coalescipede chains hostile to them are not averse to their light whatsoever. Coalescipedes, when hostile to a creature holding a light source, are only averse to that light for a short period of time. (This period of time can vary wildly - in some instances being nearly imperceptible, and lasting well over eight seconds in others.)