In the Eastern European country of Sokovia, the Avengers -- Tony Stark, Steve Rogers, Thor, Bruce Banner, Natasha Romanoff, and Clint Barton -- raid a Hydra facility commanded by Baron Wolfgang von Strucker, who has been experimenting on humans using the scepter previously wielded by Loki. They encounter two of Strucker 's test subjects -- twins Pietro Maximoff, who has superhuman speed, and Wanda Maximoff, who has telepathic and telekinetic abilities -- and apprehend Strucker, while Stark retrieves Loki 's scepter.
who created the twins in age of ultron
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