The Blackguard were formed by Vulta Daanat, a former member of the Brotherhood of Darkness and apprentice of LordSkere Kaan.[1] They set up a base on the planetMustafar, in the Southern Jedi Ruins near the Smoking Forest. They would often attack and be attacked by a criminal organization known as the Phantoms bandits. There were four ranks of Blackguard: Minion, similar to the Jedi youngling, Elite Minion, similar to the Jedi Padawan, Wilder, similar to the Jedi Knight, Elite Wilder, similar to the Jedi Master, and "The Kursk", similar to the Jedi Grandmaster. The "Blackguard" also had three specialized ranks Marauder, Trinity Assassin, and Ravager. The Marauder's purpose was to explore the galaxy to search and study various force traditions. Then there is the Trinity Assassin whose purpose was to eliminate enemies of the Blackguard and guard Force relics. Finally there was the Ravager whose purpose was to defend the order's headquarters, similar to the Jedi brute, however unlike the Jedi brute a Ravager could be anyone, not just someone of intimidating bulk, providing they were an expert at lightsaber combat and Force combat techniques. Any of these specialized ranks could be chosen as a work choice when an Elite Minion advanced to Wilder.
In 1 ABY, archaeologistMi Fon Lu tasked a group of adventurers to destroy the Blackguard. The group managed to kill all of the Blackguard in the ruins leading to what became known as the Blackguard Purge, allowing Mi Fon Lu access. However it is almost certain the organization survived, due to its many members scattered throughout the galaxy.
The Blackguard believed to increase one's knowledge of the Force one must understand the philosophies and abilities of other Force traditions around the galaxy. Therefore the Blackguard had many members of their order scattered around the galaxy to achieve their goal. The Blackguard also believed that there was no light or dark side, and that the only light or dark side dwelled within the user. They sought to bring balance the light and dark sides with in themselves, similar to the ancient Je'daii Order.
The blackguard's techniques came primarily from the teachings of their founder Vulta Daanat who trained under the leader of the Brotherhood of Darkness, Skere Kaan. Therefore it is probable that Vulta was skilled in the same things that Kaan was, such as military strategy, Mind tricks, Battle meditation, Lightsaber combat, and Force combat techniques which Daanat would have then passed down to them, it is also possible that they knew how to construct Holocrons, due to the fact that they knew about one, the Mustafar Sith holocron which they had guarded by Trinity Assassins.