Sand Devils are scorpion-shaped military walkers utilized by the Ottoman Empire to patrol the beaches. There are spotlights and a machine gun at the tail of the walker, the scorpion also has two claws which can grip a person with enough power to crush them. The amount of crewmen is unknown.Though it is thought to have a pilot and a gunner. The pilot has control of the direction and movements of everything on the vehicle but the Tail,Spotlight and Machine gun.

In the seriesEdit

A Sand Devil is used by Ottoman soldiers to capture Deryn's men during her mission to plant vitriolic barnacles in the Straits of Gallipoli. The machine kills two of her men by shooting them, and picks up one of the bodies. Its lights sweep across the beach, and Deryn retreats into the water.