3J5 was built by a robotics expert who hoped to make it big by selling the combat model to governments across the Universe. Its creator made it big when he first sold the model to the government of planet Timula to guard convoys of precious gems as they moved from the mines to the processing facility. As fate would have it, one of the droids possessed an overactive self awareness program. That droid took out the rest of the convoy and escaped from the planet with a large amount of its precious gems. When the Timulan government when to contact the creator, he was found murdered. 3J5 has since traveled the galaxy as a free-lance bounty hunter and mercenary.