Darth Xaphan

Darth Xaphan born Gabriel Skywalker was a fallen Jedi and Dark Lord of the Sith during the New Sith Wars. Gabriel was a legendary warrior as a Jedi before his fall and was apprentice of Lord Hoth and Valenthyne Farfalla temporarily. Later Gabriel fell to the dark side of the Force and became the second apprentice of Darth Bane.