portrait of superman in cybernetic heavy armor and helmet, featuring a sci-fi theme with glowing intricate designs, full body illustration, elegantly detailed digital painting in concept art style, inspired by artgerm, greg rutkowski, and alphonse mucha, showcasing smooth sharp focus and dynamic composition, avoiding errors such as low resolution, text intrusion, jpeg artifacts, and maintaining quality by steering clear of duplicates, distortions, or unnatural features such as extra limbs or malformed anatomy, while ensuring a well-proportioned and striking portrayal without any signatures or watermarks.