Hello! Let me share my HC: Quote and Curly used to be humans, and before going to the mission, they were 'upgraded' to make the mission possible. What they don't know is they have an inner voice that obeys the commands to kill everything, no matter what. Lucky for them, the government doesn't know they're still alive.
i didn't actually expect for someone to follow the non-mandatory instructions on my ask box and talk to me about quote but here we are lmao
but WOW this is a good hc. like. woagh. your brain is actually so huge. my main headcanon for quote & curly is sorta the opposite, where they (alongside all of the other robot soldiers) were artificially created, but given some sort of programmed-in conscience/emotions, sorta like the plot of the vocaloid song Kokoro? so the robots could act on their own instead of needing to be programmed how to do things in specific situations...