Here you can find bitz and parts out of the Warhammer 40,000 Dark Eldar Wracks box.
Dark Eldar Wracks are tough creatures that only serve the will of their Haemonculi. They are modified with weapons beyond recognition and their muscle and bone mass is greatly increased. Afterwards the body is fed with pain so that the former prisoner turns into a mindless fighting machines. Drugged to the eyeballs with stimulants a Wrack fights mad to the point of total destruction.