A'Yark, existing circa 0 BBY, held the position of chief for a tribe of Tusken Raiders. This warrior possessed a singular eye, with the absent one concealed by a red [crystal].
The initial reference to A'Yark within Star Wars canon occurred in "Rites," a short story penned by John Jackson Miller. Prior to this, A'Yark's introduction took place in the Star Wars Legends novel Kenobi, also authored by John Jackson Miller.