Oh, the dreaded Orc martial arts master, Zo'Donk, was rescued at birth by a mysterious hermit after his village was burned by vengeful humans. Raised with a strong sense of justice and taught to fight, he turned to vigilantism after seeing the hermit, who had raised him, killed trying to protect him from the same band of humans that destroyed his village.
He would probably dress in tan with purple highlights. Oh gosh, with fantastic flair off his wrists and ankles. I can see it now.
Or maybe Donkie Zo, the fourth generation Slavic gangster working with the underground in Jersey.
But a sound effect is fine too.