A gray-skinned creature with four matching sets of arms (one decorative), Urg is usually covered from head to toe in a pitted, acid washed set of heavy armor platelets.  The grooves and intersections of these platelets are not-infrequently marked by the more prosaic platelets (and plasma, and viscera) of various species native to Malfeas and Creation.  They don't stay long at all; he's quite fastidious.
The warstrider-sized gray bearded axe hanging from his back, on the other hand, is always perfectly clean, if a bit damp on the edges.  Urg tends to run one hand back and forth across the edge when he has the fingers to spare.

Without the armor or The Axe, he stands 6' 1" tall and weighs perhaps 300lbs.  His voice is somewhat high and flutelike.  His eyes are brown.  His hair is black.  He was born in the Month of Ascending Air on the 12th day.  His favorite food is sweet dough.  His sign...?  Attempts to read his fate don't work out well.  You ask strange questions.