The animatronics all have their own minds, even those without spirits inside them. They cannot betray their programming, though, but the spirits can take over and force them to. Some animatronics get along with their spirits (Marionette and Charlie), and some don't(Circus Baby and Elizabeth).

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FNaF Headcanons (Mostly Daycare Attendant)
De TodoJust some of my FNaF headcanons, nothing special