solo male, Knuckles The Echidna, red fur, purple eyes, white crescent marking on chest, red tail, white gloves with spikes, green anklebands, red and yellow shoes, caves, Hidden palace, purple crystals, holding green emerald, (DCxS Style, high quality, smooth lighting, masterpiece)

Side view, Text, watermark, signature, 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