Rust Devils are a gang of raiders that specialize in scrapping robots for parts and customizing them to be stronger and deadlier. They believe that there is "might in the machine." Their interests also put them directly at odds with the Mechanist competing for robots parts with robots of the Mechanist that scavenge the same areas. While the Rust Devils are based out of the Fort Hagen satellite array, they also wander the Commonwealth in search of robots or scrap.
While Rust Devil members are simply displayed as Rust Devil, their stats and equipment vary randomly based on the Sole Survivor's level. Legendary Rust Devils simply appear as a Rust Devil with a star beside their name.