Keeper
this unusual automaton seemed to be created from highly-advanced technology, and was contained in a vast mechanical structure found deep below an uncharted planet. The planet was located somewhere between Yavin and Akuria Two, and was stumbled upon by Luke Skywalker and Leia Organa shortly after the Battle of Yavin. The dome-shaped container in which the Keeper existed was connected to a power-supplying structure that tapped the planet's core for energy, and it appeared as a face of stars inside the huge dome. When the Keeper realized that it's secret had been exposed, it told the rebels about its history. The Keeper had been created as a guardian of the planet by its original inhabitants, which had fled their sector to avoid a centuries-old war. The Keeper's mission was to ready the planet for the ancient beings' eventual return. Over time, the Keeper became lonely, and created four humanoid droids in its makers' likeness. Named Earth, Wind, Fire, and Rain, the four automatons had the unusual abilities to control the natural elements they were named after. These "children" were created to help the Keeper reform the planet. Much of the reformation work was done in secret, because the Keeper didn't want the rest of the galaxy to find the planet and destroy it again. In order to protect its world from the Empire, the Keeper planned to turn Luke and Leia over to the Imperial forces on the planet. However, when it realized that the rebels weren't going to expose its secret, the Keeper worked to convince the Imperials that the planet was too dangerous to consider as a base.