Uploaded by animatics supervisor Federico D'Alessandro, these videos feature storyboarded scenes that didn't make in into the finished Avengers film. The still above was taken from the "Final Act Part I" video (shown below) and clearly features a small, fairy-like person that was supposedly the superheroine 'The Wasp' who was played by Janet Van Dyne.

But that's not all the surprises that are in store. Check out the other released animatics below from three other deleted scenes: