Kimber, short for Kimberly. A simple grunt from somewhere else, perhaps a different universe, that ended up in this hellish place. How, is unknown. What has been assumed, through her appearance and mannerisms, is that wherever she came from is simple, a happy place, a good place, far less chaotic than the world now. It's almost like she's Hank, before everything went to hell.
AShe is believed to be in her mid-twenties, young and inexperienced, at least compared to the universe she's found herself in. Despite this, she has shown skill.
She is relatively short compared to the average of around five feet, compared to the grunts of her universe, standing at only 4'6". Many have mocked her for it, but she seems to view it as a strength.
All evidence points to her being female, hence the use of she/her pronouns, but as no proper interactions with her have been recorded, one can only assume.
Due to the circumstances of her arrival, it is clear she has some form of affiliate back in her home universe, the one that told her to go on the mission. Whether her universe's versions of existing Madcom characters exist or not is unclear, and due to her universe's... lesser progress compared to the existing one, trying to ask her about them will likely fail, as their current day personalities have not formed.
If this background organization in charge of her does indeed exist, it is likely that she is a simple grunt amongst them, given tasks with no real respect attached to them. However, given recorded comms between her and her supposed affiliates, she is reported to have HUNK-like records in her missions, often surviving operations thought to be impossible.
Due to being a simple grunt, she has no extra abilities than a normal grunt from either universe would have, so this could not be the explanation.
Nor is it her weaponry, as all she normally carries is a silenced pistol and shotgun, neither of which are particularly helpful.
Instead, it is believed that her tendency to choose stealth over all other approaches, is why. She always plans out her routes, disabling all cameras, shutting all things she opens, and silently dispatching all enemies she comes across, whenever possible, with her silenced pistol. If things go wrong, she will usually flee, using her Shotgun to kill things that get too close. It is this overly stealthy method that causes her high success rate. She rarely takes risks, unless absolutely needed, prefering to be safe, rather than sorry.
However, this tendency for safety has proven to be a weakness at times, too. It often takes a long time for her to plan, during which things may change, thus ruining everything she was planning. Inconsistency is her major weakness, as under it's view, plans entirely fall apart, or become far too risky for her to be willing to risk.
Her backsory is clouded at best. What we know is that she appeared one day, on an unknown mission, and has been unable to leave. Reports show she's been on many missions in the past. Also, one must assume that she is trans, as usually Hanks are male.