Here's a look at what you're missing if you've not yet picked up the Hammer of Infinite Fate DLC for Brutal Legend.
As you can see, the Mountain Man skin for Eddie Riggs isn't quite as impressive as one would have hoped, but it certainly does add a beard, wherteas the other two costumes mainly consist of white and black face paint. Friends don't let friends be ripoffs of The Crow, so beard it is.