Andreas Katsulas Missouri - born actor Andreas Katsulas is best known to " Star Trek " fans for playing the recurring character of Romulan Commander Tomalak on . He also played Vissian Captain Drennik in the episode . Out of his four appearances as Tomalak , he appeared on a viewscreen in three of them . He once commented : " " I felt much more comfortable when he was an incredible giant on a screen , just a face . Suddenly when I had to account for everything else , I didn ' t feel support and nothing was supporting what I was doing . I was happy not to recur unless it would have gone back to a screen character " " . ( " " ) Katsulas is best known for his role on another popular science fiction television series , that of Ambassador G ' Kar on " Babylon 5 " . Fellow " Star Trek " guest performers Bill Mumy , Patricia Tallman , Caitlin Brown , and Mary Kay Adams also starred in the series , which ran from 1994 through 1998 . Walter Koenig had a recurring role on the series . Katsulas ' most recognized film role is that of the murderous one - armed man in the 1993 thriller " The Fugitive " , based on the classic series of the same name . Fellow " Next Generation " guest star Daniel Roebuck also had a role in the film , as did Richard Riehle and Danny Goldring . One of his earliest film appearances came in 1981 ' s " Ragtime " , a drama which also featured the likes of Brad Dourif , Robert Joy , and Ethan Phillips . The following year , he appeared in the made - for - TV movies " A Midsummer Night ' s Dream " , based on William Shakespeare ' s play and co - starring Steve Vinovich , and " A Very Delicate Matter " , with Zach Galligan . Katsulas would again appear with Galligan ( as well as Erick Avari and Lawrence Tierney ) in the 1984 film " Nothing Lasts Forever " . This was followed with roles in such films as " Someone to Watch Over Me " ( 1987 , with Daniel Hugh Kelly , Mark Moses , and John Rubinstein ) , " Sunset " ( 1988 , playing the chauffeur for Malcolm McDowell ' s character ) , " Next of Kin " ( 1989 , with Michael J . Pollard ) , " True Identity " ( 1991 , co - starring Frank Langella and Michael McKean ) , and " Hot Shots ! Part Deux " ( 1993 , with Miguel Ferrer and Gregory Sierra ) . He also played the villain in 1996 ' s " Executive Decision " , directed by Stuart Baird ( who would go on to direct ) and also featuring Brad Blaisdell , Tim Kelleher , Warren Munson , Richard Riehle , and Dey Young in the cast . Outside of his appearances on " Trek " , Katsulas has guest - starred on numerous other TV series . One of his earliest was a 1982 episode of the soap opera " General Hospital " , along with Deborah May . He followed this with two appearances on " Max Headroom " along with series regulars Matt Frewer , W . Morgan Sheppard , and Concetta Tomei and fellow guest - star Charles Rocket . He also appeared in episodes of " The Equalizer " ( with Daniel Davis , Robert Lansing , and Keith Szarabajka ) , " Alien Nation " ( starring Gary Graham and Eric Pierpoint ) , " Murder , She Wrote " ( with Bruce Gray , Stephen Macht , David Soul , and William Windom ) , " Millennium " ( starring Terry O ' Quinn ) , and " NYPD Blue " ( with Daniel Benzali , Gordon Clapp , William Dennis Hunt , and Don Stark ) . Among the made - for - TV movies in which he has appeared include " The Neon Empire " ( 1989 , with Natalia Nogulich ) and " The Death of the Incredible Hulk " ( 1990 , with Barbara Tarbuck ) . Katsulas , a heavy smoker , was diagnosed with inoperable lung cancer in early 2005 . He lost his battle with the disease on February 13 , 2006 , at the age of 59 . His appearance on " Enterprise " was among his last television appearances .