A majestic great white shark superhero dons intricate, ornate armor, standing proudly amidst the legendary city of Atlantis. The underwater metropolis thrives with vibrant aquatic life and shimmering architecture visible through crystal clear waters. In the background, schools of colorful fish flit about, harmonizing with the aquatic theme. The scene is set at dawn, casting a warm, golden glow over the futuristic city and enhancing the superhero's powerful silhouette. Styled as a cinematic movie poster, the artwork combines anime and manga graphics, utilizing bright colors and intricate details for a captivating display. The high-definition 8K image is suitable for offset printing, exuding a joyful atmosphere with its cinematic lighting and exceptional detail, designed in a portrait orientation to encapsulate the grandeur of the scene.