This is an inked sketch of Brak, which I think I cribbed from one of the comic books or CD cases or something I've got floating around. If you squint at the date on the image, you can see it was done before he got his own show and became as huge a success as he is now.
Brak started out as a minor villain character on the original Space Ghost cartoons, only to be brought back during the wacky era of Space Ghost: Coast to Coast and voiced currently by Andy Merrill.