Sy-Lu Xera is currently the commanding officer of Army Force Rancor of Clan Plagueis. He is also known as "Sylux".
History
Sylux was born on the Cerean home planet of Cerea. During the Clone Wars, an organisation known as the Confederacy of Independent Systems started to hold numerous Cereans hostage in an attempt to gain knowledge of superior technology. One of these hostages was Sylux, who unlike others, was not afraid of his captors and in fact wanted to join the Separatist movement.
Officials in the movement were made known of this and throughout his life, Sylux has made his way up the rankings in various organizations and served as one of the few non-droid combatants for the Separatists, before joining the Galactic Empire and being ranked as Lieutenant in the Imperial Army. Following a decade of service in the Imperial Army, Sylux defected to the Dark Jedi Brotherhood and eventually made his way to Clan Plagueis.
Affiliation with Plagueis
Brigadier Sy-Lu Xera was appointed as commanding officer of Army Force Rancor in 36 ABY following the Horizons Crisis. Along with General Ranthe Benzayn, Sylux was one of the few officers who survived the attack on Plagueis by Zoraan's Fleet. During the Crisis, Sylux helped co-ordinate various successful guerrilla style attacks on the opposition and his actions were noticed by those in charge at Plagueis and following the death of his superior, he was swiftly promoted from Lieutenant to Brigadier.
Personality and Traits
Like most Cereans, Sylux was very wise and logical thinking due to his binary brains. Subsequently, he has become a master tactician and a very powerful leader in terms of both ground and aerial forces. Furthermore, like other Cereans, Sylux follows the tradition of going into battle with his fellow soldiers, despite being a high-ranking officer and it not being a requirement for him.
In terms of fighting abilities, Sylux is a known practitioner of Shyarn-ado, once again another Cerean tradition in which the wielder uses a Shyarn blade (a curved, single edged sword), taking advantage of their binary brains and years of training, profiting from the use of speed, flexibility and quick tactical thinking.