C1-1KR, also known as "Checker", was a C1-series astromech droid that served the Royal Naboo Security Forces. In the era of the Clone Wars, Captain Talsma tasked Checker with accompanying Senator Padmé Amidala on a brief journey from a hangar to the site of Tomarian's yearly Festival of Light gala. Upon Amidala's arrival at the celebration, Checker found itself unable to climb the building's staircase, but it provided Amidala with a comlink for future communication with the droid.