This particular Gonnhirrim is absolutely silent in any movement that he makes.  He rarely speaks, and that only to Fori.  His armor is just a few shades shy of pitch black and marbled, like the stone of Moria.  He wears all manner of sharp points and things all over his leather-like armor.  Xar tends to stay at the edges of the group and eyes each of them with either deep suspicion or to find each weakness he might exploit whenever the whim takes him.

Any who engage him in a contest of staring will cause him to look down and away after only a few brief seconds.