DiabloFans

Well usually the characters are all the same race, but the DH's backstory makes it so that doesn't have to be the case, so its certainly not out of the question. That being said, the WD is already black, and the voice of Samuel L. Jackson doesn't really go with the rouge-like character design. If I were to guess at any race other than white, I would probably go with a Middle Eastern or Latino character, as that seems to be a demographic not represented by the current characters. The Wiz is Asian, the WD is black, the rest are white or Eastern European in the Monk's case, so a (idk if this is politically correct but) tan character seems to be the only one not in the game right now.

Well with the full on robe he would look too much like the Monk. The chest would look pretty DH-ish in black though.