Mariana

Mariana was a CIA worker during Day 9. She appears to function as the London office's Chief of Staff, as she often deals with personnel and administrative matters while reporting directly to Section Chief Steve Navarro. Her last name is not currently known.

Prior to Day 9

Mariana worked at the London CIA office under Section Chief Steve Navarro and was friendly with Kate Morgan.

Day 9

Mariana stops by the office of Kate Morgan to remind her that she needs her passcodes and decryption keys by the end of the week, before Kate is transferred out of the London office. Morgan asks Mariana what is going on in the bullpen, where Navarro and Jordan Reed are at work on a mission. Mariana tells Kate that they are working on capturing a high-value suspect. When Kate suggests that it could have to do with the U.S. President being in town, Mariana says that would be speculation. She and Morgan are friendly enough that Mariana treats her with respect but does not overstep her professional responsibilities and tell Kate too much about something for which Kate is not cleared.

Later on, Mariana is asked by Navarro to send Jack Bauer's personnel file over to Mark Boudreau, and she does.

Mariana arrives outside of the interrogation room where Jack Bauer is being held and delivers to Navarro the transfer order from Mark Boudreau to have Jack moved to Special Activites.

Mariana was inside the London CIA office when Jack Bauer caused an explosion while escaping with Chloe O'Brian. She was not seen among the injured.