Ok, so in this world mutants started to emerge around the 1800, and the characters we all know and love were born back then. What was happening back then? All the imperialism you can get, all around the world. The movements in places like China, India or South America reclaiming an end to colonialism were emerging (Gandhi was born towards 1860, if I recall correctly). The british empire and the rest of the european nations retained their power by virtue of their superior firepower. Is in this environment that the various mutants start to appear, and drastically change the balance of power. Can you imagine how would have gone the trial of tears in a world were Forge, Danielle Moonstar and the Proudstar brothers were around already? The impact a grown up Storm would have had for the colonialism in Africa? Monet Saint Croix as the mixed elite of the french colonies in North Africa? A Japan with Shiro Yashida? The situation was further complicated by the fact that western dirigent classes mistrusted and oppresed their own mutant population, out of fear of being replaced by them. The sentinel program was thus started by the british empire, using human subjects and enhancing them to pose a treat to the mutants. They are somewhat roughish looking than 616 sentinels, but are made possible by the leap technology gave when mutants like Doctor Nemesis started to appear. Human looking enough to "pass", they ushered the planet in a sort of steam punk era.
Karima Shapandar was a Sepay guardswoman selected to undergo the Sentinel program (I know that Sepays were just men, but shut up, artistic license there, maybe women were more likely to survive the Sentinel process). Her memory was theoretically wiped out, and now just the hunting machine remains... or maybe not?
I may come back to this design later on in a more realistic style, as I will not be able to draw another character until god only knows when.