Kayson, a non-human male, operated Kayson's Weapons Shop within the Mos Eisley settlement located on the planetary body of Tatooine. He was known for his unpleasant attitude and terrible etiquette. Physically, he resembled a large, apelike humanoid, characterized by sparse fur, a quartet of nostrils, and a visual augmentation device covering his left eye.
Many years prior, the businessman Meysen Kayson encountered Kayson as a foundling in Mos Eisley, situated on Tatooine. Meysen Kayson nurtured the young Kayson, imparting knowledge of his former occupation as a weapons dealer. Upon reaching adulthood, the child adopted Kayson's designation as his own.