The Red Kings are street gang from Manhunt 2.

Not much is known about them except other than being your typical thug type street gang. Obviously by their name you can tell that their main color is Red.
Characters 2 redkings
One of them is featured in a cutscene, where he is seen ripping off a Civilian's nose with a pair of Pilers. They only appear in the mission Red Light. Their weapons of choice are the Pilers and the Baseball Bat.