Iron Man/X-O Manowar: Heavy Metal (1996) Writer Fabian Nicieza Artist Tom Grindberg Genres Action Sci-Fi Superhero Team-Up Themes Alternate Universe Cosmic Cyberpunk Dimension-Hopping Dynamic Duos Quest/Expedition Reality Bending/Surrealism Space Opera Time Travel The Interlock Crunch X-O Manowar/Iron Man: In Heavy Metal Volume 1 #1 Iron Man/X-O Manowar: Heavy Metal Volume 1 #1