When Marvel's Avengers: Age of Ultron hits theaters this May, the sequel will include all of Earth's Mightiest Heroes from Marvel's The Avengers, along with plenty of new faces as well. The studio has released a new featurette that showcases Quicksilver (Aaron Taylor-Johnson) and Scarlet Witch (Elizabeth Olsen). Director Joss Whedon says that these "super siblings" are "massively important new characters," and we also see new footage that shows how they were orphaned at just 10 years old. Elizabeth Olsen also reveals that Scarlet Witch "messes" with the Avengers' heads so much that they have to all go away together and come back as a unit.

Chris Evans adds that it takes the Avengers awhile to "understand who can be trusted and who can't, and who's on our squad and who isn't." It has been widely rumored (SPOILER WARNING!) that Avengers: Age of Ultron ends with a new team of Avengers assembling, including, Scarlet Witch, although there are various reports about whether or not Quicksilver actually survives. While we don't get any answers in this featurette, it does include plenty of never-before-seen footage, to prepare yourself for this highly-anticipated release on May 1.

Take a look at the featurette below to learn more about the powerful brother and sister team of Quicksilver and Scarlet Witch from Avengers: Age of Ultron. In addition, we also have two new photos of these siblings from this Phase Two sequel. How do you think Quicksilver and Scarlet Witch will alter the team dynamic for the Avengers? Let us know what you think below.