A man who federal prosecutors in Atlanta nicknamed "master of disguise" is facing federal charges Thursday for allegedly robbing 10 businesses at gunpoint while dressed in different costumes. Mingo allegedly entered each of the stores late at night -- after all or nearly all customers had left -- and robbed employees at gunpoint, officials said. He allegedly donned disguises, including a construction worker, a health care professional and a security guard, according to the indictment. He allegedly dressed "head to toe" in the disguise "so that one couldn't see exactly who he is," Hertzberg said. "For months, Mingo allegedly used disguises in an attempt to evade identification and continue targeting innocent workers at gunpoint," FBI Atlanta Special Agent in Charge Marlo Graham said in a statement.