This is a Sith concept character of my own devising. My goal sitting down to make this was to make a sith lord that was visually interesting, like they used to be; long long ago with an art team far, far away. I'm absolutely SICK of seeing the same visual concept rehashed over and over again to make Sith. So I tried to not use the standard 'red and black w/ tattoos and tribal designs' formula that has been beaten into our brains.
Sorry for the nerd rage there.
He's an anzati, a race used by the clone wars comics a lot. (I also wanted to break from strictly human Sith lords.) If you don't know what they are, you should Wookiepedia it. They're basically the vampires of Star Wars.