Ghost Warrior

[ Izanagi are ] into whatever makes money, and they protect themselves with an elite corps of Merc soldiers, fanatically loyal to the corporation, who call themselves "Ghost Warriors".

Dalton: Why do the Izanagi mercs call themselves Ghost Warriors?
Aida: It's the name of the fighting elite of the original Izanagi clan.

Izanagi Ghost Warriors are the strike force of the Izanagi Corporation. They directly appear only in Unreal II, however, there are multiple references to them in the whole Unreal series. Ghost Warriors are mercenaries and are hired by Izanagi that work for money.