Darth Rager

Darth Rager was the last Sith trained personally by Darth Vader. Once called Jarred Noblok, he was a military cadet at Yapper Military Academy and was personally attacked by Palpatine once he discovered that Noblok was Force-sensitive during a space exercise. Force to wear robotic hands with claws for fingers and metal parts over destroyed parts of his body, Vader trained him how to use the Force and how to channel his hatred. He had a power over fire, and when extremely furious, fire would encircle his feet. He hunted down Luke Skywalker after Endor, but never was able to defeat him. A time portal sucked him out of the Galaxy, and no one knows where he now is.