10 Best Marvel Cinematic Universe Deleted Scenes

10. Echoes From Black Widow's Past

More nuanced than Bruce Banner's attempt on his life, this is an extended version of a scene from Captain America: The Winter Solider, with some juicy nuggets thrown in.

Marvel Studios has a solid track record of pleasing the fans, but most would agree that denying Black Widow a solo outing is shortsighted on its part.

So any morsels of information which surface from her shadowy past are kind of a big deal, and that's what this Winter Solider scene deals in.

In a lengthier version of that sequence where Scar-Jo's Natasha is leaking SHIELD secrets onto the internet, and Alexander Pierce (Robert Redford) warns the assassin that her dirty laundry is about to be aired too.

He specifically mentions “Budapest, Osaka and The Children’s War", and Black Widow looks visibly shaken.

Natasha's Budapest escapades have been referenced before - it was mission she embarked on with Hawkeye - but what of Osaka and The Children’s War?

Hopefully we'll find out more about these incidents in the Black Widow solo film when Marvel pulls its bloody finger out and makes it happen.