Kaden Baker is an agent with an unnamed government agency.
If it has a name, I didn't catch it.
Officially and for the most of her professional day, she is employed as a data-analyst for a large firm called B Collective in Brooklyn but she also routinely gets involved in "one of her crazy-ass covert ops on the side". By data-analyst, though, we are really mean to understand she is more an expert at data-mining; hacker is a closer term.
We meet her in the middle of one of those covert operations, this one entailing breaking into the bowels of the Vatican to retrieve an item and get out, preferrably without severely injuring anyone or getting hurt herself. This assignment, like all she has done - and apparently by the time we first meet her, she has done quite a few - come to her via the man she refers to as Contact.
One fascinating aspect to Baker is revealed to us a couple of days after that escapade when she is heading to meet again with Contact for yet another assignment. Heading to a park for the meet, she is stunned to see approaching her estranged parents whom she has not seen since she graduated high school and was able to leave them behind. It is immediately apparent how unwanted this reunion is as she lets us know she had not tried to contact them once in the several years since that departure, nor they her as they had themselves left town. Seeing them again, Baker is reminded of "all the misery, the tears, the pain, the damage".
It is in this surprise meeting she learns why she did not look the bit like her parents and why they had shown only the least amount of caring: she discovers she had been adopted - and more stunning, they had not chosen her back when she was three but had instead been hired to raise her and "play the role of [her] parents". Even worse, that employment had apparently included instructions to put her "through a harsh childhood". Who would do such a thing, and why - that's part of the interesting story we are allowed to learn.
Kaden Baker is described as having "wispy blond hair tinged with purple" which "combined with her wiry physique, her short hair sometimes made people mistake her for a young man, which didn't bother her a bit". Baker is considered a 'Double Threat', defined as someone who could 'dazzle you with their mad hacking skills one minute and kickbox the hell out of you the next'. She had started learning martial arts at 16 as a coping mechanism and learned she was extremely good at it, and loved it.
Baker has as her closest, and possibly only, friend, Nico, the tech lead for the covert team and a fellow hacker at B Collective. He is described as a 'super-buff and agile' gay black man who has been martial arts training with Baker for some time and is a quick learner.