Fan Casting

Ironman's origin in this marvel universe is pretty much Ironman (2008) so this first Ironman movie is a bit different. When Stark weapons start going back on the market under a different distributer named Justin Hammer, Tony Stark looks into it only to make himself the target of Whiplash a mercenary hired by Justin Hammer. Throughout the movie we see Tony fight Whiplash while Justin makes a fortune off of Stark Industries weapons. The movie ends with the reveal that Tony's old business partner Obadiah Stain who unlike the MCU's version survived and is now the one giving Justin the right to do all this since when everyone thought Obadiah was alive, he had co ownership of Stark Industries. We see a huge fight between Tony, Iron Monger, and Whiplash which ends with Whiplash questioning his loyalties and switches sides and sacrifices himself to kill Obadiah for good. Justin Hammer eventually goes to jail and in the post credits scene, we see Rhody and Tony building the War Machine suit.