Okay but I am not going insane right. Like, Viktor after his waking up does not act like normal Viktor would (even if he woke up as a robot body). Like, the hexcore has done something to his brain/emotions already, right. In every shot of him this scene he looks... depressed doesn't capture the misery yet faraway look in his eyes. U can see it in his eyebrows, his strangely calm demeanor. Something has happened to him, as a person, not just a body, and I don't think it can be undone
And, even in the later scenes with him (which are way too little btw) he seems extremely apathetic - you can mostly see it in the eyebrows, imo. Yes, he "saves" that man, but does he truly care about him and so does he do it, or does he do it to make everyone more perfect according to the hexcore's ideals? I truly believe Viktor has been partially taken over by the core (mentally i mean; bodily its pretty obvious) and i so hope he can get back from it.
My theory is that the Hexcore is using Viktor in a way a virus/parasite uses its host: it uses his body to spread itself to others as it itself can not just jump over. This is why it induces hallucinations (auditory and visual) in Viktor, and forces him to move a certain way - just like some real parasites and virusses are able to do. It wants to jump to as many people as possible, because the one life-goal of a virus is to spread, to infect.
Especially since Viktor wanted to destroy the hexcore and said so to Jayce, and an hour later he's sharing the power/use of it. That's contradictory, right? It is not voluntarily done, i am sure of it.