Yuan-ti

The appearance of yuan-ti varied greatly from nearly human-like to nearly snake-like, but all had some serpentine features. Scale colors were usually simple greens and browns, but more elaborate swirls, stripes, or diamond patterns were possible, even in blues and reds.
Yuan-ti gave off almost no scent that a human could detect, but animals could sense a dry, musty odor from their bodies.
Only the most human-like forms wore clothing, but all varieties wielded weapons if they had means to carry them.