What exactly was Fox's body made out of? Like a ceramic armor? It's not entirely armor since he still has fluid movement and range of motion completely.
Originally designed by Tokugawa Heavy Industries, the exoskeleton was used by Gray Fox during the Shadow Moses Incident. It provided a shell to which his injured body could be connected permanently. Missing body parts could be replaced with mechanical ones. The suit was also able to provide life support functions.
The appearance of the exoskeleton is a blue representation of a male muscular appearance with red shoulder pads, gauntlets, elbows, knees, and ankles with a white head. It also had a red lamp in the central portion of the facemask, with the eyeslots being to the left and right of the lamp
Stealth Camouflage - The exoskeleton comes with a built-in stealth camouflage, allowing the wearer to remain undetected even in the center of enemy compounds. The device, however, has also demonstrated susceptibility to chaff grenade interference that causes the device to deactivate.[1]
Arm-mounted cannon - Gray Fox was able to mount a cannon onto his right arm which appeared to fire rapid energy bolts.
Radar dampening field - The exoskeleton was also demonstrated to emit electromagnetic waves that causes a radar, even one as advanced as the Soliton Radar, to short out should its wearer be in close proximity. This trait is best demonstrated when Solid Snake arrived at the Western labs the first time around, after Gray Fox managed to wipe out the soldiers stationed there, as well as during their fight in the actual lab itself.[1]
Laser vulnerability - Despite the exoskeleton's great durability against physical attacks, it demonstrates vulnerability to laser weaponry: for example, during Gray Fox's confrontation with Metal Gear REX, his arm was cut off by its laser cannon.[1]
Electrical interference - Although the suit is capable of shorting out any radars in close proximity to the suit, another vulnerability of the exoskeleton is its own susceptibility to chaff grenades, which apparently interfere with the suit's power systems, preventing the suit from movemment entirely and thus paralyzing the wearer for a short period.[1]
Discharges - Due to the testing of the exoskeleton's effectiveness, as part of Dr. Clark's gene therapy project, Fox's suit often released painful electrical discharges, at times causing him to demand medicine (during the testing, he was often drugged for several months).[1] Raiden, the third cyborg ninja, later stated that a large factor in these discharges were the result of badly-done reconnection of nerve endings.
Gray Fox wore a powered exoskeleton utilizing a supersonic motor that operated with a high-frequency voltage. Whenever Fox changed position, minute electric currents in the muscle were detected and utilized to control the actuating section, giving greater than human agility.
The first type used by most of the Cyborg Ninjas provides a shell that an injured soldier can be connected to permanently. Missing body parts can be replaced with mechanical ones. Originally designed by Tokugawa Heavy Industries, the suit is also able to provide life support functions.
... well theres a ton more. Nothing that ive found actually says what theyre made of though