So a friend of mine, who I have drawn previously, asked me to draw him as a Sith. He mentioned something about the Dark Jedi that I had not known previously: namely, that some single passion or emotion was the basis for their powers - jealously, vengeance, rage, etc.

This is not the finished picture, it is merely an amusing diversion. I give you Darth Entropis: Sith Lord of Gluttony and Sloth!