Grau Worgh

The Gray Ones
Dense bones and sinew provide ample strength to these terrible warriors.  Roughly humanoid with two legs and only two arms, the Grau Worgh may not raise an alarm if seen in dull light at a distance.  Upon closer view though one would instantly notice the overly broad nasal build, large black eyes, large feet and too long arms.  But never mind the view, as you approach you would of course first notice the dank moist smell and hear the slow deep cavernous breathing.  
Some Grau have had their forearms replaced with dexterous tools or energy weapons.  Others seem to have various sensors permanently installed on the side of their heads or along their spine.  Almost preferring to have an item installed rather than carry it around, especially if they intend to use it frequently.
At times the Grau are without clothing or personal items, but these are believed to be minor laborers.  Most Grau Worgh wear bands of overlapping black cloth that are mostly just there to provide somewhere to place identifiers and insignia.  As a Grau becomes more important, earns honors, completes missions, or makes discoveries - they attach remnants to their clothing.  These remnants may be fashioned from small bits gathered along the way, or official medals handed down by a master.  A quick glance would tell any Grau what another's purpose is, and how well they are performing at it.  The oldest and most revered of the Grau have layer upon layer of remnants, as one never removes a remnant.