Kabalite Trueborn
Trueborn is a term among Dark Eldar that refers to those who were not grown from a vat, but came out the good old fashioned way out of their mothers.
Essentially these jerks and bitches are pampered and spoiled brats that have great privileges in DEldar society, as well the rights to get their hands on some truly special equipment (like Splinter Pistols or Shardcarbines) because they came out the proper twat unlike the very large majority of their brethren and sisters.