Yeah, you. You, the viewer are a character in all this. Yes, really.

You are a healthy human adult, just like everyone else. Not too old to be a problem but not too young to be looked down on by anyone for your age.
You were thrown into the ghetto a while back now for an especially heinous crime you don't remember and you've long past settled into your new life, just like everyone else.
Like everyone else in the ghetto, your mind has been selectively wiped, mostly clearing out details like what you did to get thrown in here, and details about your family or friends, if you had any... Just like everyone else.

You're very mechanically-inclined, definitely one of the best engineers inside the entire ghetto, no exaggeration.
Engineering, mechanical expertise, even pretty darn handy with simple robotics, you're the go-to for most of the bigger projects.
You absolutely STINK at working with little parts; sometimes you misplace the little pieces, sometimes you struggle getting them into place, crossed wires, bent pins, short-circuits, you just never had a knack for it.
You work best with wrenches and hammers, welding torches and impact drivers, not tweezers and magnifying glasses.
Can you build a fully-functional exosuit from scratch that can move a house without breaking it? Yes, and you'll have it done quicker than most people.
Can you assemble a motor for a toy? Probably not.
The best example of your skill is the holographic room and the panels that line it; it's not pretty, but all four rooms are the talk of the facility and almost all the important experiments are run inside them. You can't take all the credit, though; the team working on the living holograms overhauled the coding for you to allow much more complex objects and organisms. Much better than the simple shapes you had programmed in, for sure.

You work diligently and the results are excellent; you were only hired for basic repair work, but you've long past been unofficially (maybe officially? Ranks and actual jobs aren't 100% concrete in the lab) promoted to essentially being the lead engineer on most projects, as well as performing all the tougher repairs that the others can't handle.
On and off, you train a few of your coworkers in some of your skills, in the hopes that you can spread the work around and lessen the load in the future.
You've made friends, both human and hybrid, although you don't get too much time to socialize.