Located on Mars these hulking beasts sometimes referred to as “Sand Eaters” are massive armored aliens. We have seen them wielding large machine guns similar in look to human LMGs. Also some have been known to hold large shields that can be placed in the ground in front of them. They are an industrial heavy race which can be seen in their armor and their outposts on Mars. Not much is known about them other than they are at war with the Vex. Which seeing as the Vex have an alliance with The Fallen we can speculate that they don’t have good terms with The Fallen either.