Hephaestus Industries

Hephaestus Industries is a company based on the place "insert Planet Here". Hephaestus Industries was named after the Greek deity of smithing, who created all of Olympus' gods' weapons. He was known as the gods' blacksmith and was revered in Greece's manufacturing and industrial centers, particularly Athens. The firm was a front for insurgents attempting to obtain official Legionnaire armor licenses from the RKD in order to reverse engineer their own armor to aid the URF with the Titan 1 project. A project established for their insurgent group of warriors to battle and be on par with the UNSC's augmented super-soldiers known as the Spartans without the usage of power-enhancing drugs, which would later murder their soldiers. In order to do so, they went to the black market, where they had heard rumors of the Spartan-IV program and augmentations being leaked, and spent a significant amount of money to obtain this information in order to augment their own soldiers in order to at least have a fair chance against the UNSC Spartans.
Before giving them any armor or technology, the RKD would vet Hephaestus Industries by offering them drawings for a prototype riffle to establish their worth as a corporation. Of course, after a few tries and errors, they were able to develop a riffle that met the RKD's standards; however, because to a shortage of funds, they were only able to produce one prototype. Hephaestus Industries used this as an advantage to explain to the RKD that the fact that they desperately needed funding to create a new set of armor that could possibly be used by the UNSC Spartans to battle insurgents or even other threats with a lighter version of their current armors with AI compatibility that would increase their skills in battles was just a coverup for their real plans. 
They would try to sell the RKD on their plans for a new legionnaire armor known as Lvateinn in exchange for the legionnaire armor and possibly additional funding to create the armor for the UNSC, explaining that the RKD would benefit greatly from this because the UNSC could use them as a new possible company for custom armor. They'd go on to say that they could even enlist the services of retired UNSC spartans to test these armors until they were confident that they could make something that was both safe and functional.
Hephaestus Industries desired an armor that could take damage like the spartan's Mjolnir armor but with benefits of requiring less energy from its reactor to move, allowing the titan to move faster and more agilely overall. This meant that it would be cheaper to reproduce in the long term because it required less materials.
Further investigations were ongoing privately, and before the RKD could gather any information on the front company, they would have cleared out the base, handing over all blueprints and ideas to the United Rebel Front, allowing them to replicate their armor variants for their newly augmented super soldiers using their own resources.