SIV is a drone who, after being exposed to nanotechnology known as SIVA, was brought back to life.

Whenever she first "woke up", or powered on, she was in some type of ruins, missing an arm and a leg, which were slowly being rebuilt by the nanites inside of her (which were what made her tail, headband, and visor have that ruby red coloration to them.

She spent a month or two trying to get herself to, at least, be able to walk. It took a lot of effort(especially with the stilt legs female disassembly drones have) but she eventually got used to her legs, walking out of the ruined building she woke up in, and she just... began to wander, using different broken, ruined buildings as temporary homes.

She'd seen other drones before, some workers, some disassembly drones, but she mostly tried to avoid them, unsure if she would be attacked on sight or not, as she had been by a group of worker drones a day or two after she started wandering.