Aaron Taylor-Johnson joined the Marvel Cinematic Universe in Avengers: Age of Ultron, where he portrayed the character Pietro Maximoff, also known as Quicksilver. Quicksilver is a mutant with superhuman speed, and he becomes a member of the Avengers team. The film explores the Avengers' battle against the villainous Ultron and introduces new dynamics within the team. Aaron Taylor-Johnson's portrayal of Quicksilver brought a charismatic and energetic presence to the character, making him a fan favorite. Although his time in the MCU was short-lived, his performance left a lasting impact on audiences.