Snape and Vader .comic

I really don't know how can I describe "origin" of this picture. I wanted to draw something with Vader and Jix. Also I have on a planning stage a comic with Snape. And probably those two ideas marged together. I somehow doubt if this comic is funny. But one thing is certain - Snape and Vader have something in common. Definietly.

As for Jix - he is a character for Star Wars comic, one of my favorites heroes (despite the fact that he was only in two stories ). I draw him once so if you are interested of his background you can check it out. It was a while ago through, so it's not too impressive drawing