Morton has performed numerous audio books, including among others, Fool (2009), Sacré Bleu (2012), and The Serpent of Venice (2014), all written by Christopher Moore, in addition to the Kilo Five trilogy by Karen Traviss and Carry On by Rainbow Rowell (2015). He also did voice work in the 2009 animated movie My Dog Tulip, and voices the male Sith Inquisitor in the MMORPG Star Wars: The Old Republic, created by BioWare and LucasArts.