Southland Brown, space smuggler, is an original character heavily inspired by the Northwest Smith character created by C.L. Moore. He'll have a small part in the Mars storyline, which will follow the Paris one. My conception of him is that the Eldritch Abominations he's encountered throughout his career have compounded to give him severe PTSD which he suppresses with the Martian drug Mnemoka.
Northwest Smith was of course a precursor to Han Solo and similar characters that would come later, so my design for this guy is based on a young Harrison Ford (but thinner and more scarred and weathered from hard living).