Iron Man/X-O Manowar: Heavy Metal (1996) Writer Fabian Nicieza Artist Tom Grindberg Genres Action Sci-Fi Superhero Team-Up Themes Cosmic Dynamic Duos Odd Couples Space Opera The Interlock Crunch X-O Manowar/Iron Man: In Heavy Metal Volume 1 #1 Iron Man/X-O Manowar: Heavy Metal Volume 1 #1