First Steps" star Vanessa Kirby breaks down Sue Storm's birth scene and her mid-credits moment with Robert Downey Jr. as Doctor Doom.

First Steps star Vanessa Kirby says she would love the opportunity to explore Sue Storm's dark side in the Marvel Cinematic

If there's one thing to take away from the press tour of The Fantastic Four: First Steps (no, we know what you're thinking and it's not that), it's that Vanessa Kirby has done her homework when it comes to Sue Storm and already has hopes for The Invisible Woman's future.