Generically these are members of older brother's gang, called the "Fraternity" as an ode to their brotherly kinship. They are lowly educated and fiercely loyal to each other and to their leader. Some just came out of prison. They tolerate the lead male but find him odd due to his OCD and nerdish ways. Of course they are never outright vocal in his or the other brother's presence. All members will eventually get arrested or killed by police by end of Season 1.
Any race, but majority will be Asian. Street fighting and use of various weapons.