Uh... no. He's pretty much a caricature of a shifty salesman, or a hustler: just a guy wearing a trenchcoat full of various different hot (as in stolen) goods to try and sell to unsuspecting people to make a quick buck. Remember the bum in GMC who just walks onto the movie and tries to sell Kermit a watch (but not before he tries to figure out Kermit's life story)? That's pretty much the kind of character Lefty is. In fact, his name alone is a jab... I forget, you watch M*A*S*H too, right? Colonel Potter lectured about this in one episode where Michael Bell played a chopper pilot who kept scrounging, hustling, and selling war souvenirs (which was injuring Korean children who were bringing him this junk), and even mentioned in his speech about military personnel who end up getting mixed up in buying and selling such souvenirs, adding, "The next thing you know, his nickname is Lefty."