The automated defensive structures known as Ultra Turrets were uniquely crafted by Sprocket, the Hunters of the Outer Rim' medic, programmer, and inventor who was also a rookie Hunter. These were intended for use during the competition on Vespaara. Sprocket saw these autoturrets as his most powerful defensive tool inside the Grand Arena; they were capable of targeting numerous opponents and unleashing a barrage of blaster bolts very quickly. However, their operational lifespan was limited, and upon reaching the end of their designated time, they would self-destruct.