He rose to fame for his performance as Carl Grimes on AMC's TV drama The Walking Dead, which won a Satellite Award for Best Cast in 2012.
He made his feature film debut in the 2009 film Get Low, which starred Robert Duvall.
He was nominated for Best Performance in a TV series in the 33rd Youngest Artist Awards, an honor which he, Dylan Everett , and Jared Gilmore shared.
His parents, Gina Ann Carlton and William Riggs, raised him in Atlanta, Georgia. He has a younger brother named Grayson. In 2015, he began dating Brianna Maphis.
He played Carl Grimes on The Walking Dead, sharing the screen with Jon Bernthal's character, Shane.