Combined Retrievers somewhat resemble an average Retriever, though they seem to be more effective in combat and are significantly more maneuverable. If deemed necessary, a Retriever is capable of connecting and merging with another Retriever and forming a single unit. The mining process utilized by a Retriever is noted to create a tornado-like effect as the ground is pulled into the Sentinel's hold.
Once in position above an acceptable place to harvest, the Retriever deploys its blue, gravitic beam towards the world's surface and begins hauling chunks of land caught in the beam into its underbelly. Nathaniel Palmer and other scientists observe Retrievers operate on the Ark.Ī Retriever is capable of producing an artificial gravitic force that allows it to remove materials from a world's surface.