I've been working on a pen and paper universe, essentially from scratch, but with some familiar archetypes that have been re-imagined.
I am very close to having a very internally consistent narrative and conceptual model for my "orc" analogs, but unfortunately, the subject matter would instantly result in an M or R rating by the ESRB if it were made into a computer game. (It's quite graphic, and explicit in nature in fact, and I am hesitant to write about it on a public forum as a consequence. Let's just say that what's ordnary common practice for them, results in hard jail time and death penalties in human society, and put it at that for now, with the addition that for them, it is litterally natural to do those things, and the human way of doing things is extremely unnatural and confusing for them. Eg, they aren't explicitly evil; brutality is simply part of what they are and how they think, and they are built to withstand and incorporate that. Much like humans don't usually think twice about the origins of a ham sandwich before eating it, and many find veganism to be incomprehensibly silly and restrictive, if not officiously castigating and confining. Much more accurately, imagine somebody saying and doing things that are so over the line that you simply can't contain your anger, and you bust them in the face. It is an instinctual reaction, powered by millions of years of evolution that does not care about societies or norms, and you don't even realize you have knocked their teeth out until you suddenly find your fist lodged in their bloody face. For orcs, that sensation and impulse goes much deeper, to the point where an M rating is simply inescapable. The source material for them will be similarly graphic and explicit in nature, and thus my hesitence to just write it up and post it.)
But, if it's decided to be OK for show and tell, I suppose I could sew it together and slap some makeup on it. Warts and all.