Sig as a Murder Drone
Backstory:
Created by a malfunction on the Murder Core assembly line, and shut down due to being too dangerous to the company, Serial Malfunction S woke up due to Copper 9's core imploding. Wandering homeless for what felt like forever, he made a robot bug out of spare parts and scrap to keep him company, (featured in my other painting). S eventually found a Worker Drone colony. Unbeknownst to him, he was a Murder Drone and had powers above average Murder Drones. This Worker Drone colony was highly generous, letting him live with them, despite his yellow eye. Life was peaceful until the Murder Drones attacked, and S felt he needed to protect his colony. He didn't know what to do until he saw something. His hand was glowing! He immediately knew what he had to do.

I can't be bothered to write anything else.
(no, he didn't challenge them to a Puyo Puyo battle)