The G5 SWAT Guard is an NPC in Perfect Dark.
These guards are highly intelligent, and make use of cloaking devices.
They appear in the levels Chicago: Stealth and G5 Building: Reconnaissance. In Chicago, they are simply response forces, appearing when the FBI Agents set off the alarm. They use CMP-150s here.
In the G5 Building, they appear in the first areas of the level, using Cloaking Devices and CMP-150s. If the alarm is sounded, more of them appear, but this time with DY357 Magnums.