Jeremiah - you can call him Jerry, but he'll probably rip your limbs off if you do - is a nasty guy with a bad attitude and a lever-action rifle to back that up. He's a human, but never really went to Earth. Born and raised in several intergalactic orphanaries with a bunch of aliens from all corners of the galaxy, he begun a career as a bounty hunter early, scoring his first kill before the age of 15. After that, the bodycount has been steadily rising, and by mid-30's, he has basically hunted down every imaginable race in the galaxy - but not his own kind. See, he's the only human around as far as he knows, until he is assigned to Earth, a planet claimed to be lost thousands of years ago. And of course he finds himself from New York, chasing a bunch of alien criminals and a girl they kidnapped from the Most Important Man In the Universe.
this is like a live action duke nukem