Most Dark Hunters had code-names (Darkness, Gatherer), but some didn't (Nidhiki, Lariska, Vezok). Is their a reason some of them lacked code-names? Or did they actually all have code-names, because in story we only see Lariska using that name among the Hunters and with Nidhiki to earn his trust, (and Nihdidki's own lack of a code-name could be attributed to his notorious incompetence). Were some, like Krekka, simply because it wouldn't matter if anyone knew their names? And, on a related note, why would it matter if anyone knew the Dark-Hunters's real names?
The main question I have, though, is did the code-named Dark Hunters know each other's real names, or refer to each other by their code-names?
(On a related note to this question, I always assumed that the Piraka's Dark Hunter names were the Tracer, the Trigger, the Drifter, the Snake, the Beast, the Bully, all that makes... but that's not canon, is it?)