The 'M-63' Mule was developed by the Opus Institute as one of the first open source Mech blueprints. They remain a ubiquitous presence across the wasteland as a result. Their design was replicated not only by other corpos, but numerous enthusiasts with a crafting bay. The Mule's spacious cargo bay makes the Mech invaluable to wastelanders, corpos, and salvagers alike for transporting salvage over a wide array of terrain, whilst its general hardiness allows it to survive numerous threats from raider ambushes to radiation storms.