[You are either a dead kid or teen]
You were normal at some point, just living out your young life. You'd been someone who just happened to be on the sidelines, just another unfortunate victim of The Creator. One minute you'd felt pain, then there was nothing but blackness, but suddenly, you could feel something again. Your soul had taken its residence in an unprogramed project of The Creator. Solar and Lunar had just killed The Creator, so this body would never be coded. You regain your ability to see and feel, only to find yourself in a horizontal tube filled with some sticky liquid. Your first thought is that you can't breathe and need to escape. You don't realize that you don't need air anymore. You desperately kick at the door to the tube, managing to get it open with relative ease and claw your way out of the tube. You pull yourself out but find yourself unable to stand properly because you haven't fully settled into this body, causing you to collapse. When you go to block your fall with your arms, something finally registers. Your arms are mechanical. You are a machine, an animatronic. You hit the ground with a loud crash. You hear a pair of voices at the sound.
Lunar: "Wait, did you hear that?"
Solar: "Yes... let's check it out, but stay alert. We don't know what sort of 'experiments' The Creator was making here."
You fail to stand up, causing you to still be trying to get on your feet when the two animatronics arrive and see you. Your eyes lock onto the smaller one with a light blue color. Something about him seems to resonate almost uncomfortably with something in your chest. Little do you know that this is star power imbued into your new body, and he can feel it too. The smaller animatronic immediately goes on the defensive.
Lunar: "The Creator infused that thing with star power!"
Solar: "... It doesn't seem to be trying to attack us. Not yet, at least."