Nathaniel is a very secret pup, he's not very open to his past. He thinks that Paxus isn't unlocking the full might of the KSE and therefore he grabbed a large group who have the same views and he forged the Korriban Black Hand. They want to overthrow the current government and establish a new reborn government who will demonstrate their full power towards others and strike fear into their souls. As they will make the KSE the dominant force of the galaxy.
Lane- His very first learner under his wing. She is a excellent fighter and she is almost capable of taking down an army. Where she's from is unknown. She is also an excellent leader and very smart.
Rom- His second learner. Also a good fighter and Smith's rival. Used to be Smith's best friend and now his worst enemy. Where he's from is the same place Smith is. An excellent stealth agent, a veteran pilot and scientific genius.