4. Fin Fang Foom
For this entry, you could replace Fin Fang Foom with any as yet unseen Iron Man villain. The logic behind wanting to see him, or anyone from Iron Man's comic book rogues gallery, is that it would signal an intent for an Iron Man 4 movie in the future, and that can only be a good thing. I briefly touched upon the possibility of Foom appearing in the MCU in my '
5 Villains We'd Love To See In Marvel Movies' article and it does actually make sense. Fin Fang Foom has links to The Mandarin, who we already know is going to be the main villain in Iron Man 3, so it would be of no surprise to see him awaken from a centuries-long underground slumber. I imagine the camera slowly zooming in on a colossal sleeping body, before focusing on the eyes, which suddenly open accompanied by a blood-curdling roar, before the credits continue to roll. Things would really get interesting for Iron Man if that was the case.