While not the narrator, Angela is as important as Q in this series. She is most definitly the female protagonist of this story.
Angela is a 15 year old boy, biologically the daughter of Malak Tucker (Secret Service) and Roger Tucker (Singer). She wants to be a secret service agent like her mom, but her dad hates that idea since he doesn't want her dying like her mom supposedly did.
Her wish to be a sercret service agent comes in handy, do to it she has read plenty of spy books along with learning everything she can to be an agent. So she is at least slightly prepared for everything, unlike Q. She at least knows the lingo. Alongside that, Angela learned taekwondo, so she is able to help fight as well. Her talents come in handy, since it is always nice to have someone who would be underestimated on the team.
Angela learned about the Ghost Cell when Q did. She is a bit more involved in the Ghost Cell, since the aunt she never knew of was a part of it, her mother supposed to be a part of it. Now her mother has faked her death, took the place of her unknown aunt who died, and is infilitrating the Ghost Cell. Angela is a target in most of the books, thanks to her mother. Thankfully, she isn't very good at being held captive.
Angela is an interesting character that makes for a good protagonist and role model. Her and Q balence things out quite nicely for a great read.