J3-KC was an R5-series astromech droid in the service of Jat Kaa's Coolers located on the planet Batuu. This particular droid operated a drink cart, a type of ground vehicle, dispensing Coca-Cola products for sale within Black Spire Outpost. Its distinctive red and white paint job mirrored the design of its vehicle, which was inspired by the Coca-Cola brand's visual identity.