In fact, even the teaser attached to 'Iron Man 2' back in May (watch after the jump) and the cryptic messages uncovered on ScariestThingIEverSaw.com just left us with more questions: What's inside the train car? What's the phrase "No certainty if alive. May be after us. We go underground," referring to? What do Rocket Poppeteers have to do with anything? The rumored casting calls don't even reveal any juicy details. The Weirton Daily Times revealed that during a school assembly about big time moviemaking, students were informed that some Hollywood folks were on the hunt for 2,000 extras. Then there's the one story on Bloody Disgusting involving two boys and a girl between the ages of 13 and 14, though we were under the assumption J.J. Abrams was searching for all unknowns. Fanning falls just shy of that age range, though, so maybe she could be playing Natalie, one of the lead characters? It's possible.