We’ve seen glimpses of Scarlet Witch (Elizabeth Olsen) and Quicksilver (Aaron Taylor-Johnson) in action in the Avengers: Age of Ultron trailers, but Marvel UK just unveiled a brand new featurette called “Super Siblings” that gives us a far more in-depth look at the characters, especially Scarlet Witch. As someone who isn’t too familiar with the source material, I never really knew how powerful she was, but based on what we see in this promo video, she’s going to have an especially devastating effect on the Avengers.

Check out the Avengers: Age of Ultron featurette below. The film opens in 3D on May 1st and also stars Robert Downey Jr., Chris Hemsworth, Scarlett Johansson, Jeremy Renner, Chris Evans, Mark Ruffalo, Stellan Skarsgard, Samuel L. Jackson, Cobie Smulders, Paul Bettany, Anthony Mackie, Hayley Atwell, Idris Elba and Don Cheadle.

Via Marvel UK.

Here’s the official synopsis for Avengers: Age of Ultron:

Marvel Studios presents “Avengers: Age of Ultron,” the epic follow-up to the biggest Super Hero movie of all time. When Tony Stark tries to jumpstart a dormant peacekeeping program, things go awry and Earth’s Mightiest Heroes, including Iron Man, Captain America, Thor, The Incredible Hulk, Black Widow and Hawkeye, are put to the ultimate test as the fate of the planet hangs in the balance. As the villainous Ultron emerges, it is up to The Avengers to stop him from enacting his terrible plans, and soon uneasy alliances and unexpected action pave the way for an epic and unique global adventure.

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Image via Disney-Marvel