Darth Fenris was orignially from the planet Correlia. His parents had been force-users belonging to neither side of the Force. And they were not Gray Jedi either. No one knows who taught them, but they did teach Fenris, everything they knew. With his new found powers, he used them on defenseless civilians, murdering them and thieving things of worth.
When the Sith came during the New Galactic Empire, he joined. Mostly for the thrill of Battle. He enjoyed killing people from the shadows when the time was just about perfect. He somehow soon ended up being trained by Moff Jolee. How this occured is unknown.
The training was long and harsh, and if were Jolee were to be killed, he would be the one to take his place as keeper of the Sith Archives. Many things are still unknown about this Powerful Sith. Darth Fenris also has a very special ship called the Scimiter. It will be described later on.
Darth Fenris's Strengths:
Carries either Double Bladed Lightsaber or Single
Strong Force User
Assassin(Strikes from the Shadows)
Uses the force to cloak