Lammergier

Lammergier is an Archeotech creation of the age of strife. During the Dark Age of technology, devices were made which could bring a man back from death, in a way. A machine placed in the cadaver's brain, and coupled with life sustaining augmetic organs to replace bodily functions, could access the previous person's memories. 
During the age of strife, a number of these delicate machines, intended to retrieve information from the memories of the dead, were put to a different use. The demeanour of these resurrected men, dour and practical, along with the resilience and strength lent them by their augmetic enhancements, led to their use as warriors. 
More mentally capable than a servitor, yet just as loyal, the resurrected were clad in armour and set upon the enemy. Without the need for food nor water, their capabilities as hunters of men became apparent, and with powered claws installed in their gauntlets, there were few opponents they could not tackle. 
These warriors, beyond death were thought lost in their whole during the age of strife. But Lammergier remained. Buried in the ash of a burned city, he was unearthed during construction works, and quietly acquired by Interrogator William Laurence.