Watch: ‘Avengers: Age of Ultron’ Featurette Focuses on Quicksilver and Scarlet Witch

What sets “Avengers: Age of Ultron” apart from the first film? The introduction of “massively important new characters,” for one thing.

Director Joss Whedon talks about the characters, super-siblings Scarlet Witch (played by Elizabeth Olsen) and Quicksilver (Aaron Taylor-Johnson), in a new behind-the-scenes featurette.

Aside from showing brief footage from the “Avengers” sequel, the clip, released by Marvel U.K., also explores the twins’ superpowers. Scarlet Witch has telekinetic abilities that ultimately drive that Avengers crazy, while Quicksilver moves as fast as a bullet.

“Avengers: Age of Ultron” opens in theaters on May 1.

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