masterpiece, best quality, amazing quality, very aesthetic, absurdres, solo, sonic (series), sonic channel (style), flat color, 1 boy, metalsonic, red aura, ruins, post-apocalypse, cityscape, Dutch angle, dynamic , red shoes, red eyes, black sclera, robot joints,

multiple tails, modern, recent, old, oldest, graphic, cartoon, text, painting, crayon, graphite, abstract, glitch, deformed, mutated, ugly, disfigured, long body, lowres, bad anatomy, bad hands, missing fingers, extra digit, fewer digits, cropped, very displeasing, (worst quality, bad quality:1.2), bad anatomy, sketch, jpeg artifacts, signature, watermark, username, simple background, conjoined, ai-generated