Robin Atkin Downes Robin Atkin Downes is an English actor and prolific voice actor who provided Vulcan and Romulan chants and dialogue through Automated Dialogue Replacement ( ADR ) on ' s . He is perhaps best known for playing the recurring role of Byron Gordon on the science fiction series " Babylon 5 " . Early life . Downes was born and raised in the United Kingdom and acted in his first play while attending boarding school at the age of six . He continued to study acting in the United States , earning a Master of Fine Arts degree from Temple University in Philadelphia , Pennsylvania . Film and television work . Downes ' first role on " Babylon 5 " was that of Grey Council member Morann in the 1997 episode " Atonement , " which was directed by Tony Dow . He reprised this role for the 1998 TV movie " Babylon 5 : In the Beginning " , directed by Michael Vejar . He was subsequently cast as Byron , a role he played in eight episodes of the television series . In addition to Dow and Vejar , Downes worked with a number of " Star Trek " performers on the " Babylon 5 " series and movie , including Theodore Bikel , Caitlin Brown , Anthony Crivello , Andreas Katsulas , Leigh J . McCloskey , J . Patrick McCormack , Bill Mumy , Tricia O ' Neil , Robin Sachs , Reiner Schöne , Tracy Scoggins , Patricia Tallman , and regular Walter Koenig . In addition to his work on " Babylon 5 " , Downes has appeared on such television shows as " Buffy the Vampire Slayer " ( with Todd Babcock ) , " Beverly Hills , 90210 " ( with Michelle Phillips ) , " Nash Bridges " ( with Susan Gibney ) , " Titans " ( with Ricardo Montalban ) , and " Angel " ( directed by James Contner ) . More recently , Downes has guest - starred on " CSI : Miami " ( in an episode with Willie Garson ) , " Entourage " , and " In Plain Sight " . He also played Jeff in three episodes of the USA Network series " The Starter Wife " , the first of which guest - starred Ronny Cox and Bonita Friedericy . Downes has also appeared in several films . He played Peter Kranek ( the werewolf ) in the 1998 independent horror film " The Werewolf Reborn ! " and its 2000 sequel " Frankenstein & the Werewolf Reborn ! " He also had a lead role in the 2002 movie " High Voltage " . In 2005 , he worked with guest star Brad Dourif and Marjorie Monaghan in the short film " The Great War of Magellan " . More recently , he starred in and directed the romantic comedy " For Pete ' s Wake ! " , which also co - starred his " Babylon 5 " castmate , Patricia Tallman . Voice - over work . As a voice actor , Downes has worked on numerous films , television shows , video games , and radio and TV commercials . For film , he was the voice of one of the Ancient Primes in the 2009 blockbuster " Transformers : Revenge of the Fallen " , which was co - written by Alex Kurtzman and Roberto Orci . This film also featured the voices of Robert Foxworth , Tony Todd , and Frank Welker . In addition , Downes voiced the cat in the animated adventure " The Tale of Despereaux " ( with the voices of Frank Langella and Christopher Lloyd ) and was heard as a news reporter in films such as " The Kingdom " ( 2007 ) and " Body of Lies " ( 2008 ) . Downes has provided Additional Dialogue Recording work for many other films , including " The Bourne Ultimatum " and Paramount / Spyglass ' " G . I . Joe : The Rise of Cobra " . Downes provided the English voice for David in the Japanese animated film " Steamboy " , which also featured the voice of star Patrick Stewart . Downes and Stewart had previously done voice work in several video games together . Downes was the voice of Cyclops and Pyro in " X - Men : Next Dimension " and " X - Men : Legends " and the voice of Sabretooth in " X - Men : The Official Game " , all of which featured Stewart as the voice of Professor X . ( " Next Dimension " also featured the voices of Jenette Goldstein and Alan Dale ; " Legends " had the voices of Earl Boen , Greg Ellis , Tony Jay , Scott MacDonald , Armin Shimerman , and Rick Worthy ; " The Official Game " had Dwight Schultz , Debra Wilson , and Keone Young ) . Downes and Stewart also voiced characters in the 2004 game " Forgotten Realms : Demon Stone " , along with Daniel Riordan . Downes ' many video game roles include the Prince in " Prince of Persia : Warrior Within " , Minh Young Kim and many other characters in the " Gears of War " games , Captain Slag in the " Ratchet & Clank " games , and Travis Touchdown , the main protagonist of the " No More Heroes " series . He also had supporting roles in two of the acclaimed " Uncharted " games , " Uncharted : Drake ' s Fortune " and " Uncharted 2 : Among Thieves " . Both of these featured the voice of Richard McGonagle , while s Rene Auberjonois can be heard in the latter . Downes can be heard in various entries of the " Call of Duty " video game series , as well . Downes ' voice can also be heard in such hit games as " Star Wars : Knights of the Old Republic " ( with Brian George , James Horan , Jason Marsden , Ethan Phillips , Robin Sachs , Raphael Sbarge , Carolyn Seymour , and Frank Welker ) , " Halo 2 " ( with Hamilton Camp , Miguel Ferrer , John Kassir , and Ron Perlman ) , " Doom³ " ( with Michael Bell and Keone Young ) , " Metal Gear Solid 3 : Snake Eater " ( with Paul Eiding , Michael Bell , and Richard McGonagle ) , " Kingdom Hearts II " ( with Jimmy Bennett , Robert Costanzo , Brian George , James Horan , Kenneth Mars , Chris Sarandon , David Ogden Stiers , and Frank Welker ) , " Team Fortress 2 " and " Mass Effect " ( with Marina Sirtis , Raphael Sbarge , Brian George , Dwight Schultz , Carolyn Seymour , Keith Szarabajka , and Armin Shimerman ) . He was part of the ensemble voice cast of 2005 ' s " Gun " , as well ; others who worked on this game include Brad Dourif , the aforementioned Ron Perlman nnd Dwight Schultz , and Wade Williams . He voiced George Washington in the game " Assassin ' s Creed III " . This game also featured Nolan North , Roger Aaron Brown , and John de Lancie , though Downes did not share any scenes with any of them . On television , Downes has lent his voice to such animated cartoons as " Grim & Evil " , " Stroker and Hoop " , " Ben 10 " , " Justice League " , and " Avatar : The Last Airbender " . He currently plays random characters on " Star Wars : The Clone Wars " and also voices the on " Batman : The Brave and the Bold " ( on which Diedrich Bader voices Batman ) . He also had a role in the animated series for Marvel Comics ' " The Avengers " ( 2011 ) . Most recently , he has provided the voice of " The Master , " the lead antagonist of FX ' s horror / science fiction series " The Strain " , co - starring Roger Cross .