The Cosians were a race of humanoids native to the Deep Core planet Cosia. They were distinguished by its cameloid appearance, which included a long neck that supported a stout skull. The snout of a Cosian was covered with thick skin that gave the mouth a beak-like appearance, and a heavy brow protected the eyes. A crown of thick hair covered the head, and was often grown into two tresses that hung down in front of the ears. The hands of a Cosian were distinguished by long, supple fingers, while the feet were stout and tipped with short claws. The thick tail of a Cosian was used for balance and stability, and it was tipped with a cone-shaped shock of fur. Tera Sinube was a member of this species.

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