 Concept illustrator and designer of Iron Man 's Mark VII armor Phil Saunders stated that " Joss Whedon was looking for something that had the ' cool ' factor of the suitcase suit [ from Iron Man 2 ] , while still being a fully armored , heavy duty suit that could take on an army in the final battle . " To that end , Saunders borrowed ideas that had been proposed in Iron Man 2 as well as some ideas that had been abandoned in Iron Man and merged them together in a modular suit that has big ammo packets on the arms and a backpack . The Science & Entertainment Exchange also provided science consultation for the film . 
