Asa Maxwell Thornton Farr Butterfield is a British actor. He became known for playing the main character Bruno in the Holocaust film The Boy in the Striped Pyjamas (2008), for which he received nominations for the British Independent Film Award and the London Film Critics Circle Award for Young British Performer of the Year at the age of 11. For his leading performance as Hugo Cabret in Martin Scorsese's drama Hugo (2011), Butterfield received considerable praise and was awarded the Young Hollywood Award for Breakthrough Performance—Male and was nominated for the Critics' Choice Movie Award for Best Young Performer and the Empire Award for Best Male Newcomer, among other accolades. He was nominated for a British Independent Film Award for Best Actor for playing Nathan Ellis in Morgan Matthews's X+Y (2014). In 2019, Butterfield began starring as Otis Milburn in the Netflix comedy-drama series Sex Education.