J5-KC was an astromech droid of the R2 series type, and it belonged to Jat Kaa's Coolers which was located on the planet Batuu. This particular droid operated a wheeled transport for the distribution of Diet Coke drinks available for purchase within Black Spire Outpost. Its visual design, featuring red and white coloring, mirrored the aesthetics of the Diet Coke brand, as did the vehicle it operated.