20 Brilliantly Obscure Marvel Movie Easter Eggs You Didn't Notice

11. Fin Fang Foom

Iron Man fans who thought Fin Fang Foom wouldn't be making any kind of appearance in the Iron Man film universe because of the difficulty of convincingly introducing a dragon (even into a world of superheroes,) would be shocked to learn that the iconic villain does appear. The creature is immortalised, albeit very briefly, as a billboard poster in the background of one shot that would have ensure only the most learned, and observant fans would noticed it.