The least human character in All Systems Red is also the most human. A half-robotic creature (or maybe more than half) privately calls itself Murderbot, and it’s got a good reason to. All the humans around it consider it just another security android, which is fine by Murderbot; it’d rather watch bad TV than have to interact with humans.
But when things start to go seriously wrong with the planetary exploration team that Murderbot is supposed to protect, more truths are revealed than it would prefer.
Recommendation: Read it. This novella is an excellent new take on cybernetics and being human. It also won the Hugo, Nebula, Locus, and Alex awards.