A beautiful highly detailed mechanical (Imagine an epic showdown between Iron Man and one of his arch-nemeses, such as the Mandarin or Whiplash. Design an AI movie poster that captures the tension and drama of this epic battle:1.3) by james jean and makoto shinkai, (atompunk:0.8), 70mm photo, featured on artstation, 4k, octane render, (centered composition:1.2), 4k, 8k, artstationhq | Steampunk