Forge has a superhuman intuitive talent for inventing mechanical devices. His mutant ability functions as perception, as he possesses the ability to visually perceive "mechanical energy" (the kinetic energy and potential energy present in the components of mechanical systems) in action. This power allows Forge to instinctively know and understand the potential and functional operations of any machine or technological device in his visual range, a skill that combined with his natural intelligence allows him to conceive, design and build mechanical devices, and operate, modify and disassemble existing technology or create countermeasures for it.
Forge's superhuman talent does not mean that he is a greater inventor than geniuses such as Reed Richards, Victor von Doom, or Anthony Stark, none of whom owe their talent for invention to mutation. But even a genius at invention must, for the most part, consciously work out the theoretical principles behind the invention and then the design of the invention itself through a series of logical steps.
In Forge's case, however, many of these logical steps would be worked out by his subconscious mind. Hence, Forge himself might not be entirely aware of exactly how he figured out how to create an invention of his; he often has to take apart his own inventiosn to see how they work.
He has created fantastic futuristic devices, including cybernetic systems, sophisticated holograms, and elaborate computer and fiber-optic systems.
James Bradley (Doctor Nemesis) Edit
Doctor Nemesis is a mutant and possesses what he describes as a "self-evolved intellect", which is an, in reality, instinctively intuitive genius, much along the lines of Forge and Box. Being an advanced polymath, specializing in various experimental fields ranging towards genetics, computer programming, handheld weaponry, temporal physics, and interdimensional travel and more.
Madison Jeffries (Box)Edit
He also has a talent for intuitive design, similar to that of Forge, and it has been remarked by telepaths that his mind seems more like a machine than man.