Er, an orc wizard was literally one of the first minor adversaries I saw encountered in a brief 2nd ed. D&D session in the eighties. The concept is older than several versions of D&D and several people on the board. It's actually cliche. Tolkien stopped being the sole inspiration for kitchen sink fantasy (if he ever was) in 1979 when players of D&D could find, and use, a raygun from a flying saucer.
That aside, I would like to know how the characters are, well, different? Orcs are used as bad guys because they're faceles, and orc who hits things is the same as every other. When I looked at the character page, the only one I could remember -- this happened right before I chimed in -- was the orc priest. The others all just sort of rolled into the same character. When orcs are NPCs, that's fine, they're faceless mooks, but here, is that bad?