Karnathi are mortal, biological beings whose bodies reflect long adaptation to pressure, stone, and geological instability.
Adults generally stand between four-and-a-half and five feet, with compact, efficient builds and a notable strength-to-size ratio. Females often present broader shoulder structures and more evenly distributed mass, while males tend toward slightly reduced height and leaner musculature.
The dermal resonance lattice, a microscopic crystalline network integrated within the skin, alters light interaction and creates a polished stone or metal-like surface appearance without making the skin mineral in composition.
Common skin tones include clay, limestone, ochre, slate, granite, basalt, copper, and iron. Their eyes often reflect mineral hues such as hematite, amber, bronze, charcoal, flint, and copper, retaining ambient light more readily in low illumination.
A living bone ridge spans the crown of the skull and varies by individual. These ridges are frequently adorned with pigment, metalwork, cloth, or chain to indicate lineage, craft affiliation, or personal achievement.