The appearance of a Smiler is both nightmarish and deceptively simple, exuding an aura of pure malevolence. In their natural state, Smilers appear as dark, amorphous shapes, shifting fluidly as they move. They lack any defined body structure, which can lead most into a feeling of unease. Their most striking and recognizable feature is the enormous, sinister grin that stretches across what might be considered their "face", a grin lined with sharp, needle-like teeth that gleam faintly even in complete darkness. This unnatural grin seems almost suspended in the blackness, appearing and vanishing with their movements, as if it exists independently of any physical form.
Instead of a humanoid structure, Smilers have what could be best described as an arachnoid design, with multiple long, jointed legs protruding from their body, ending in razor-sharp, claw-like appendages. These legs allow Smilers to scuttle swiftly and silently across any terrain, giving them an advantage over unsuspecting prey. The legs also contribute to their terrifying speed and agility, allowing them to navigate walls, ceilings, and narrow spaces with ease. Their eyes, if they can be called that, are hollow, reflective voids that shimmer faintly in low light, serving as windows into an endless darkness.
Some accounts describe these eyes as crimson or glowing faintly white, intensifying when they sense fear. The hollow orbs are devoid of any empathy or warmth, reflecting only hunger and malice.