Louis Mellis is a Scottish actor and screenwriter. Along with David Scinto, he wrote the screenplay for the 2000 film Sexy Beast and the 2009 film 44 Inch Chest.In 2010, Mellis signed on to write The Princess' Gangster, based on the apparently true story of Princess Margaret's affair with gangster John Bindon in the late 1960s.Among gamers he is known for having voiced Darth Sion, a character in Star Wars: Knights of the Old Republic II: The Sith Lords. Louis was also the voice of BBC Radio 1.