p through the pages of any of the "Avengers" comic books, however, and you'll discover that Stark's eating habits aren't nearly as prevalent as they are in the movies. This is precisely because it wasn't scripted, but rather something actor Robert Downey Jr. added to his character. According to Cinema Blend, Downey always brought something to snack on while on set, and during long filming days, it inevitably ended up being caught on camera. This of course was not due to the fact that production staff was too lazy to reshoot, or didn't bother telling Downey to put down the food. The reason was simply that Downey didn't inform anyone beforehand that he would be eating during the scene, and everyone just went with it because it worked well with the character and provided comic relief in otherwise dramatic scenes.

Robert Downey Jr. not only eats on camera, but also has secret stashes of food hidden around the set so he's able to eat whatever and whenever he wants.

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