Malachor was a rocky, hellish wasteland planet shrouded in mystery. It was the location of an event known as the Great Scourge of Malachor, which took place thousands of years before the conflict between the First Order and the Resistance. During the reign of the Galactic Empire, Jedi Master Yoda told Ezra Bridger, a Padawan, to find Malachor to help him defeat Darth Vader and the Inquisitors.