Q-7N was a Malagarrian mining droid. He left his home planet of Malagarr when its populace wiped itself out by making the planet a giant reactor, causing huge levels of radioactivity. He began working for a band of pirates, and was used as a security droid; he was left on Yavin 4 to guard their stash of treasure. Q-7N was forgotten, however, and thus he guarded the temple storing the treasure for two thousand years. In 0 ABY, he was encountered by a Rebel, who was attempting to eliminate Imperial activity surrounding the temple. Q-7N had tired of his security role, and decided to help the Rebel battle the Empire. Over the course of several months, Q-7N became heavily involved in the Galactic Civil War, and greatly aided the Rebel war effort.