<P> Simpkins was born in New York City, to Monique Simpkins . He first appeared on TV when he was three weeks old . His first role was on One Life to Live where he shared the recurring role as John "Jack" Cramer . He was already asked for this role when he wasn't born yet . Simpkins soon started a recurring role as Jude Cooper Bauer on Guiding Light, in which he went on to be "Jude" for about four years . He guest starred in Law & Order: Criminal Intent, and a handful of commercials and print ads . </P> <P> Simpkins made his film debut in Steven Spielberg's War of the Worlds (2005). Next was a featured role in All the King's Men (2006) where he played a young version of Jude Law's character; leading up to Simpkins' playing Aaron in the multiple - award - winning Little Children (2006). Simpkins went on to film Pride and Glory (2008), in which he and his sister, actress Ryan Simpkins, play the children of Colin Farrell . Simpkins also completed Gardens of the Night (2008) and then in Revolutionary Road (2008), in which he again starred alongside his real - life sister Ryan . Simpkins has guest - starred on CSI, Private Practice and Family of Four . In September 2009, he signed on to play Luke in the 2010 film The Next Three Days . He also played Dalton Lambert in Insidious (2011) and Insidious: Chapter 2 (2013). </P> <P> In 2013, Simpkins starred alongside Robert Downey, Jr. in the live - action film Iron Man 3, as Stark's sidekick, Harley Keener (he also reprises his role in Lego Marvel's Avengers). This was the first time a child had been featured prominently in the Iron Man films . Simpkins signed a 3 - picture deal with Marvel Studios . He appeared in Iron Man 3 director Shane Black's 2016 film, The Nice Guys . </P> <P> Simpkins also starred in the 2015 blockbuster Jurassic World, and appeared as Adam in Meadowland . </P>

Who plays the little boy in iron man 3
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