William Jack Poulter (born 28 January 1993) is an English actor. He first gained recognition in School of Comedy (2009) and then for his role as Eustace Scrubb in the adventure film The Chronicles of Narnia: The Voyage of the Dawn Treader (2010) and his starring role in the comedy film We're the Millers (2013). He won the BAFTA Rising Star Award in 2014.