Black Ghost

Black Ghost or Hei Gui units were a pre-War contingent of the People's Liberation Army.

Background
Counterinsurgency squads used by the Chinese military during the Great War, Black Ghost units were equipped with Chinese Stealth Armor. Suits captured from these units were reversed engineered and used as the basis for the U.S. military's portable "Stealth Boy" units.

Appearances
Black Ghost units are mentioned

Behind the scenes
Hēi (黑) means "black" in chinese, while Guǐ (鬼) means "ghost". Those two words together combined form a racial slur.