Ever since the development of fully bipedal Metal Gear in Peace Walker, especially when it comes to Big Boss having control of what is esecntially a REX in the form of ZEKE. Since the plot of Metal Gear and Metal Gear 2: Solid Snake is about preventing Big Boss from getting Metal Gear technology why is no one concerned? Additionally Metal Gear 1 gives Dr. Drago Pettrovich Madnar the honor of having created the technology that allows a bipedal machine to walk about without stubling about like a drunk baby. This of course is controdicted by Peace Walker by having Huey Emmerich developed Metal Gear that can walk, decades before the so called "Father of Robotics".
Unless, and here is my theory: Huey Emmerich is Dr. Madnar.
Here is my evidence: In the latest trailers for The Phantom Pain Huey is seen waring a pair of assistent legs that allow the crippled man to walk around. Dr. Madnar is said to have created "Powered Gear" technology that allows for bipedal machine for medical reasons, to give the ability to walk back to those who have lost it. It is shown in Metal Gear 1 that Madnar built a man sized machine using said technology, the Terminator rip-off: TX-11. The TX-11 of course shares its code name with the "first" Metal Gear, the TX-55.
Back to the same Phantom Pain trailer where Huey is being tortured by Revolver Ocelt and Miller/Campell (if you are one of those people). Presumably Miller is still tight with Big Boss up until this point and Revolver is also scene in this trailer helping Big Boss, so this interigation is probably being carried out with the very least his knowledge, if not under his orders. Why? This is likely after the nine year comma, a lot can happen in that amount of time (purhapse a child with Strangelove? - but that is beside the point).He survives or escapes from his captors. Huey has made an enemy of Big Boss for some reason, maybe he doesn't want to build death machine anymore, much like his son would later declare. So Huey goes into hiding, the Cold War is still going on so the best way to hide from Americans, even those with armies without boarders, is by defecting to Russia. Boom - Huey Emmerich changes his name to Drago Pettrovich Madnar but keeps the Doctor title.
Then years latter when Big Boss needs another Metal Gear built, this time in a little African country called Outer Heaven he gets his old buddy Huey/Drago to do it for him.
TL:DR: Huey Emmerich is Drago Petrovich Madnar. Discuss?