Dr. Eggman in Santa costume, red and white suit, fluffy trim, black boots, white gloves, round belly, white beard, mischievous grin, holding a Christmas sack, robotic reindeer, snowy landscape, pine trees with lights, festive decorations, night time, colorful lights, soft snowfall, full moon, wide-angle shot, dynamic pose, high-quality textures, glossy materials, reflective surfaces, holiday spirit, vibrant colors.