solo male, Metal Sonic, robot, blue metal skin, black sclera, red pupils, pointy metal nose, gray claws, yellow core, red shoes, black sky, factory, fire, battle stance, (Butterrrmoth style, flat color, cell shading, best quality, masterpiece)

Animal nose, furry, furry nose, Extra characters, multiple people, chibi, multiple characters, (deformed, distorted, disfigured:1.3), poorly drawn, bad anatomy, wrong anatomy, extra limb, missing limb, floating limbs, (mutated hands and fingers:1.4), disconnected limbs, mutation, mutated, ugly, disgusting, blurry, amputation