The Kyphus Triplets are inseparable. They dress alike, fight alike, and talk alike. No one knows for sure if they are identical twins or not, as even during the most debauched orgies they refuse to take off their masks. Ostensibly Arxus is the oldest of the three by a few minutes and Kurron is the youngest. While they don’t claim to be telepathically linked, they frequently do that annoying twin thing where one of them (usually Kurron) starts a sentence and another (usually Arxus) finishes it. Still, the middle born Rurlan usually does the bulk of the talking even if the other two start and end the thoughts.
Recently they’ve been hoping to do a better job of garnering Slaanesh’s favor and so are eager to volunteer for any raiding party or warband which might afford them the chance to earn glory.