Air Caste

The Air Caste of the T’au function not only as messengers, but also as the bulk of the T’au Protection Fleet and the T’au Merchant Fleet. The T’au of the Air Caste are even taller and more slender than the Water Caste, with long, skinny appendages and hollow bones. These traits are attributed to their lives lived mostly in low to zero-gravity voidships and void stations. This is exacerbated by Air Caste reluctance, if not outright refusal, to land on planets, as their skeletons have atrophied to the point where injury and broken bones are commonplace when they spend time in a gravity well. In the past, during the time of the Mont’au before the unification of the T’au tribes, the Air Caste had membranes stretching between their limbs, which allowed them to glide on air currents. T’au Air Caste pilots are recognised as generally superior to Human pilots due to their better fighter craft, though they lack a normal Imperial pilot’s level of combat experience.