Omega Force Armor

Enhanced Plasma Force Armor, is an armor system that uses enhanced by electricity to super charge Metal that as close to as hard as diamond as they can to reduce the damage from all forms of physical attacks although in most practicalities, EPF armor makes a mobile suit virtually immune to solid body impact attacks.

When EPF armor powers up, a shocking sound can be heard and the dark gray surface of the mobile suit's armor is overlaid in color, which appears to be alterable by entering different values in the Armor Voltage section of the OS. Once powered up, the EPF armor requires a steady flow of energy to maintain although power consumption spikes momentarily whenever the mobile suit is hit.

The Reactor shown is built within the suit, it spends it's energy inside the side attach onto the reactor core, it would also count as a cooling system for the powerplant.