You’re Tony Stark. You invented Iron Man. You ARE Iron Man. Now all of your Iron Man armors have been stolen, and super villains are using your armor to try and destroy you. What do you do? You use an old set of DR. DOOM’s armor to beat the snot out of your own tech, THAT’s what you do.
Axel-In-Charge: Extending "Secret Wars," Excitement for a "Totally Awesome Hulk"