Onikage Trooper

The Onikage Ninja Troopers are ZECT's elite covert infantry unit, specialized in close-quarters battle and espionage. True to their name, Onikage (鬼陰), they the ninja versions of the ZECTroopers, due to their suits are sleeker and pitch black by color - allowing them to conceal themselves in darkness. Unlike the usual ZECTroopers, the Onikage Troopers are armed with even deadlier weapons; a chrome-bladed nodachi called the Mutsunokami (陸奥守), razor-sharp shurikens that explode when latched on its target, and supressed firearms such as a silenced AW Magnum.

History
Long before ZECT came to be, the Armed Forces of the Philippines had once planned to train special units for espionage. To that end, high-ranking officers of the AFP hired a renowned master of ninjutsu from Japan, where the soldiers were taught the way of ninpo, where the soldiers underwent into harsh training to further their abilities to battle foes in the shadows.