Wraith

Wraiths are one of the more sophisticated Necron units. These grotesque floating killers lack legs or body (except a serpentine spinal column), floating over the battlefield like ghosts. Their wide, hunched shoulders support a leering, skull face, and long, whip-like arms wield scalpel blades for fingers and a nightmare array of surgical implements. Moving with unnatural fluidity, Wraiths are fearsome in close combat, often phasing in and out corporeality like ghosts (thus the sobriquet 'Wraiths'). This phase shifting ability allows them to avoid physical damage from weapons or to even move through solid objects. It has often been suggested that in ancient days, Wraiths were once Necrontyr murderers and psychopaths before their eternal entombment with their cold, metallic husks.