9. Carl Weathers
How dare anyone forget Apollo Creed! Weathers may be looking a bitweathered lately, but he is an icon nonetheless. This is the man who stood toe-to-toe with Stallone, twice! And fought side-by-side with Schwarzenegger in the jungles of South America. To have this man back with the other big names of 80s macho action would be a truly rewarding sight. Providing he is done making crappy Adam Sandler films, Weathers could use The Expendables 3 as a foothold in exploiting this new fangled appreciation from a long underappreciated subgenre of action. It makes perfect sense to build in a pre-established relationship between Weathers and Stallones Ross, maybe even stating that they were sparring partners way back when, and feature him listening to Little Richards Long Tall Sally at some point (chortle, chortle). However it happens, it wouldnt really need too much thought. It would all be worth it, to see the hulking Weathers suit up and unload a few rounds next to Rocky and Dutch.
Possible Weapon: Dynamite and an Uzi.
10. Benicio Del Toro
Not all casting for The Expendables 3 will be about heroes. At some point, we are going to need a new villain (hopefully this time, not literally named as such). Although he is not so much a classically known actor in the action genre, Del Toro is easily iconic enough and badass enough to provide a suitable antagonist against the sheer mass and mite of the Expendables. We know that General Garza from the first film had a daughter, but what if he had a son we knew nothing about? And what if that soon were a sadistic, mean-as-hell, nut job that is now out for vengeance. There is little doubt that The Expendables wont stretch beyond a third installment (try as the studios probably will), so bringing the story arc full circle makes sense. They did it with Batman, they did it with Die Hard (until 4.0 came along), they even did it with Toy Story, so why not with this.
Possible Weapon: A collection of highly dangerous and toxic animals, and a gold plated crossbow.