Police said Joshua Michael "G" White and Marcus "Mac" Grisby have been charged in an armed robbery after the victim told officers the nicknames they used.
Justin Toro said he was robbed at gunpoint by two black males near 612 Oak St.
He said one was around 6'1" with a big nose and a low fade haircut wearing a maroon jacket. The other one was around 6'3" with a large afro, wearing a white hoody with red letters and red sweat pants.
They jumped out of some bushes, and the one with a maroon hoody put a gun to his back.
He said they took an IPhone, a Social Security card, a TennCare card and an expired driver's license.
He said the man with the afro called himself "G" and mentioned that he was a Gangster Disciple and the one with the low fade called himself "Mac" and "Blood".
The victim was given a photo array by police and he immediately picked out "G" as White and Grisby as "Mac".
Police told him to take his name, but he said he was positive and "couldn't forget those faces."
White, 21, and Grisby, 21, were charged with aggravated robbery.
Police said Grisby was charged in a second armed robbery. Officers were flagged down on Wednesday by Michael Bradley, who said two days earlier he was leaving a friend's apartment in the 800 block of McCallie Avenue and starting to get in his car when Grisby appeared and opened the passenger door.
He said Grisby pointed a gun at him and told him to give up his wallet and everything else he had on him. He said the gunman took $300 from his wallet and threw it down.
The victim said he tried to follow the robber, but lost him.
He told police he had previously seen his picture on a wanted poster after a robbery he committed on Jan. 6. He said UTC had distributed the poster.
White is facing one aggravated robbery charge and Grisby has two.