Darth Vulcan

Early Life/Training
Vulcan was a clone of the Dark Jedi,Trilon and was trained by the Sith Holocron of Darth Bane and The Dark Jedi Clone,Lord X.He would kill several of his instructors during training and was gifted a Purple Double Bladed Lightsaber by his Commander,Grand Admiral Oppa'site and was named the Enforcer of Oppa'site's Empire.The saber he used contained the same crystal used by Mace Windu in his lightsaber along with one from the Purple Lightsaber of a unnamed Jedi.

Revealed
Vulcan was discovered when he was sent to kill the now "Guardian",Trilon Keys after he killed Lord X.After a short duel he was forced to retreat due to Trilon's advantage on the planet which was strong with the Light Side of the Force.Vulcan would engage in several battles with Trilon throughout the war.

Betrayal and taking a Apprentice
Vulcan began to plot against Oppa'site and secretly gathered supporters throughout the Empire but he was discovered by Jedi Battlemaster Matthew Keys who he was forced to kidnap.After intense torture he managed to corrupt Matthew to the Dark Side and name him as his Apprentice.Afterwards he Rebelled against Oppa'site and killed him.

Death
Vulcan decided that his apprentice,Darth Corrupter was to attached to his wife,Ashley Vizla and decided to kill her.After this Corrupter was so enraged that he killed Vulcan and claimed the title of Dark Lord of The Sith for himself.