Alexi was from a family of wealthy merchants. They had ruled Tund for a very long time before Orix took over. He had a sister named Laurena. At age 4 his mother was raped and killed by pirates. Alexi avenged his mother by slaughtering them all with his bare hands. He was bullied all through school and the only thing keeping him from going insane was his father's guidance.
Once Orix took over, Alexi's father became a general with Orix. At age 22 his sister was killed in a freak accident but Alexi believed that the Hutts had her assainated and so he took vengence upon them by helping Orix in the slaughter of Nar Shadda (I believe) It was then that Orix noticed how strong the dark side was within Alexi.
He asked Alexi to become his apprentice and be known as Lynx and he promised him a chance at revenge. Alexi accepted and for some time Orix trained him in the ways of the dark side. Once Orix was captured Lynx went into hiding on Tund and when things settled he emerged as the heir to Orix. He took what was once Orix's and made it his.
Lynx now is leader of the Centrality faction and was the one who informed Dark Lord Praxis of the plot against him. it was he who saved Praxis from assassination. But he does not think much of it.