I'm thinking about a character who's "The Mule/Heavy"; he does heavy lifting such as cargo, and on jobs does one or two things: if things go smooth, he just stands there looking scary. If things don't go smooth, he proves why it would've been better to let things go smooth :P Doesn't like the fighting much, and begins losing control of himself the longer a fight goes on, or the worse the fight gets. See's himself as an attack dog, literally; won't start a fight on his own initiative, and stops when ordered, provided he hasn't lost his head.
A slight drinking problem tied to a dark secret from his past, obviously an ex-soldier due to his knowledge and proficiency with weapons and combat. (Human, of course). It'd be better for him to stop tying his lively hood to violence, but he doesn't know what else to do with himself- he doesn't trust himself to operate without the structure of orders.

That concept work? (I do plan to submit a character sheet, I just thought I'd get approval on the concept first)