I read your concept before going to the gym and my badminton game, pondering for a character concept for myself while doing thosr things, and I came up with quite a good solution for it. even worked out a way to put a psychological expertise background, should it work.
One man, stood among the rest, a unique individual by all account. The automatons need him and that man needs them, in equality for neither cant exist without the other. Started out a simple man, creating masterpieces and technological advancement unlike any other until this man himself applied his arts unto himself. Neither human nor machine, he was a hybrid, he had a living mind and a living heart but a cold metallic exterior and internal clockworks. The human biological structure was too complex to fuse or create artificially for the benefit of the automatons, but fusing machine over living tissue is something quite a rare sight indeed but yet possible. The first one to succeed in such a feat, standing equal among machines, for they saw in him the key to unlocking the secrets for their humanization.
He was appointed an adviser to both faction alike, and in the depths of his curious mind, this individual wanted more than just a metallic body. His lust for knowledge, went towards the humanization of the automatons. Helping the automatons was nowhere near his main goal, for he had a theory by perhaps unlocking the secrets of the mortal mind, the human psyche, and an individual's soul will lead to solving the mystery that would bind to species as one. Should he succeed, he could enhance, immortalize and even unlock the potential of his own mind.
Thus started this man's occupation as an Analyst, for a lack of a better term, a psychologist. Treating patients, studying human behaviors, giving them comfort and ease through trying times. This was his public title, a healer of minds, boosting up the humans morale during their subservient phase and even preventing unrest to the civil population by reassurances and cunning words. And yet for most cases, he was no angel. unknowing to the public, a small amount of patients keep disappearing within his care, forced to live in the horrors of torture and mind racking tests below the underground tunnels of his experimental vaults. He was nowhere near the answer nor the solution but he would not stop, no matter how long it will take, how many more bodies will end up stacking within his lab.
more or less this is the character concept I came up with. its just a draft though. if it doesn't appeal to you I can always scrap it. I can always make another.