Use case: background-extraction. Edit this image by changing ONLY the background. Replace the entire gray-and-white checkerboard with a completely uniform solid very light warm gray (#eeeeea), no checker pattern anywhere, no gradients, no ground, no cast shadow. Keep the wight character exactly as it is: identical skull face, hood, hands, every fabric panel and torn hem strip, pose, brown palette, lighting, proportions, position and resolution. This is a clean image-to-3D input on a solid studio background. Do not redesign, retouch, sharpen, add or remove character parts. No text.