I accepted IU_0017 and wrote the verdict to artifacts/review.json.

• File check: the downloaded file's sha256 matches the expected hash. It is a 512×512 PNG.
• Traits: I viewed the image directly. It shows one front-facing frog bust with swamp-green skin and bright green glowing eyes. There is no headgear, and the blue hoodie has drawstrings and a zip.
• Style: the pixels are large and square, consistent with a 32×32 grid upscaled with hard edges. The outline is black, the background is very dark, and there is no text or watermark.
• Scores: brief 9, silhouette 8, style 8, originality 7. I named the character "Glow Hopper".
• Not checked: I judged the palette and the 32×32 grid by eye. My first palette-counting attempt failed because Python's PIL library isn't installed, and I didn't retry it another way. A stricter check could still find off-palette colours.