Darth Krayus

Hasten Vortue, otherwise known as Darth Krayus, is the Sith master for Darth Yatsumaru.

Background
Hasten Vortue was a loyal Jedi who, out of curiosity, snuck into the deep levels of the Jedi Archives and discovered a Sith Holocron. Abandoning the Jedi Order, he retreated and eventually crash landed on one of the Kashyyyk moons. The crash burned much of his body and forced him to be saved by the local Wookiees, only to repay them with slaughter. He eventually found a tourist and, after killing him, stole his ship. Over the years he trained and began collecting Sith Holocrons until he had a library of them hidden on Korriban. He eventually helped Darth Sadow break away from the Jedi Order and become his Sith apprentice.

Involvement
He is the second boss of the game and the group can only achieve Force Lightning after defeating him. They also have a choice to get the Force Choke Holocron. After defeating them, Sadow will make the group his prime target and will try to track them down with any means necessary; including Bounty Hunters.

Strategy
A number of six Saber Throws to the back will kill him, however, he tends to use the force to twirl his Lightsabers in circles around himself. When he does this it can be fairly easy to do so when it passes.

Quotes
"Death is the fate of all those who stand against me."

"My... Apprentice will... end you all..." (Before dying)

Trivia
Image is of the Sith Stalker armor