Aaron Himelstein is an American actor whose career started in the 2000s. He first debuted in the film High Fidelity. Later in 2002, he gained recognition for playing the young Austin Powers in Austin Powers in Goldmember. He guest-starred in an episode of House, M.D. after that. In 2006, he became known for his performances in the films Fast Food Nation, All the Boys Love Mandy Lane, and Bachelor Party Vegas. He next starred in the movies Remember the Daze and The Informers. In the 2010s, he was the voice of Desna in the animated series The Legend of Korra. His latest role was as Cameron Klein in the superhero films Captain America: The Winter Soldier and Avengers: Age of Ultron.