Nightmare

If the Slayer is a perfect killing machine, Nightmare is darkness and mortality incarnate. The cold shell of this helljack gives form to a bestial predatory instinct. It can become a ghostly specter and move through the rock and steel of any barrier before coalescing into terrifying reality. Nightmare's blackened metal chassis melts into the greater darkness - until it reaches out to rend its luckless victims limb from limb.