Metallic archaea were an artificially modified subculture of archaea created by Code Talker. It could be used to near instantly oxidize and melt any metal it is applied to. This allowed it to render weapons, especially nuclear weapons, with their capabilities. It could also be used to contain and consume radiation and radioactive materials, such as uranium. Alternatively, it could also be used to make more make better and faster mechanisms, increasing a machines reaction speed and allowing the to lock and release their individual jointed parts at will, much like a living creature.