Darth Sion was a powerful Sith Lord who lived during the Old Republic Era. He took part in many wars under Exar Kun, Darth Revan and Darth Traya. He was the apprentice of Darth Traya and worked with Darth Nihilus. He played a key role in the Sith and some of the wars including The Madalorian Wars, Old Sith Wars.
He thought of himself as immortal and used pain and anger combined with the power of the dark side to keep his decaying body together.
Fan art was used in this video for which I believe falls under Fair Use however if you own any of this Fan art and wish to have credit for it or have it removed from the video please feel free to contact me.