Agent Carter is an agent of the Federal Bureau of Investigation.
Agent Carter was the officer assigned to Gavin Orsay, who had been pressured into assisting the FBI with cyber terrorism work. However, following intervention by Douglas Stamper, Carter’s boss Nathan Green began communicating directly with Orsay (Chapter 17). When Orsay failed to perform his duties, Carter went to his apartment to arrest him. When Orsay asked to speak to Agent Green, Carter denied this request at first but complied when Orsay revealed that he had accessed the AT&T data grid (Chapter 25).