Matthew Wood. Sound Department: Star Wars: Episode III - Revenge of the Sith. Matthew Wood is an American sound editor and voice actor who works at Lucasfilm. He did sound editing for the 2011 re-releases of the original Star Wars trilogy, the prequel trilogy, the sequel trilogy and many more Lucasfilm projects. He voiced General Grievous in Revenge of the Sith after replacing Richard McGonagle who voiced in the Genndy...