Necrons: Necron Warriors

Necron Warriors form the majority of a tomb world's nigh-inexhaustible armies. They are a corps of fleshless mechanoids, ranged in their millions against the vital races of the galaxy. Ancient limbs are corroded with age, yet the strength of their metal sinews has not faded, nor has the hard-wired loyalty to their Overlords.

Canoptek Scarab Swarms are found throughout tomb worlds and Necron spacecraft, where automated routines compel them to break down damaged matter of all kinds with their entropic mandibles. They feed on organic and non-organic matter alike, converting it into energy which is re-routed into repair protocols.