The RB133 Auricrusher is a robotic enemy in Metroid Prime: Federation Force. Its only appearance is in M18: Hightower, where numerous units will spawn to destroy the Drill the Federation Force is protecting. As it approaches the Drill, its own drill will activate and the machine will continue to the base of the Federation Drill. The machine moves very slowly however, so it can be destroyed before it even reaches the Drill.