(written from a Production point of view)
Edward Wiley (11 July 1955 – 16 October 1995; age 40) was the actor who played Governor Vagh in the Star Trek: The Next Generation fourth season episode "The Mind's Eye" and Gul Toran in the Star Trek: Deep Space Nine second season episode "Profit and Loss".
Wiley filmed "The Mind's Eye" between Tuesday 26 March 1991 and Thursday 28 March 1991 on Paramount Stage 9 and 16. When the 1994 Northridge earthquake struck Los Angeles, Wiley left the Paramount lot in his full Cardassian makeup while filming "Profit and Loss". (Captains' Logs Supplemental - The Unauthorized Guide to the New Trek Voyages)
Wiley made his screen acting debut in the acclaimed 1981 film Chariots of Fire, co-starring future Star Trek alumni Dennis Christopher and Alice Krige. Later that same year, Wiley was seen in another acclaimed film, Ragtime, which also featured the likes of Brad Dourif, Robert Joy, Andreas Katsulas, and Ethan Phillips. His subsequent film credits include Tony Scott's The Hunger (1983, with Cliff DeYoung), the sci-fi comedy Morons from Outer Space (1985, with James B. Sikking), the cult hit Highlander (1986, co-starring Clancy Brown), 1988's Spies Inc. (with Alice Krige and David Warner), and Relentless 3 (1993, with Robert Costanzo).
In addition to his appearances on Star Trek, Wiley has also guest-starred on such shows as Hunter, Jake and the Fatman, and NYPD Blue. In the latter series (starring Gordon Clapp and Sharon Lawrence), he appeared in an episode with Stephen Root. He has a number of TV movie credits built up, as well, including The First Olympics: Athens 1896 (1984, co-starring David Ogden Stiers, Matt Frewer, and Mark Rolston), Pursuit (1989, with John Glover), Desperado: Badlands Justice (1989, with John Rhys-Davies, Robert O'Reilly, Gregory Sierra, James B. Sikking, and Time Winters), Blind Faith (1990, with David Andrews, Jefrey Alan Chandler, Gordon Clapp, Aaron Lustig, Dakin Matthews, and Jimmie F. Skaggs), In the Line of Duty: Siege at Marion (1992, starring Ed Begley, Jr.), Sniper (1993), Runaway One (1995, with Robert Beltran), and The Writing on the Wall (1996, with Penny Johnson). He also had a supporting role in the 1996 TV version of The Canterville Ghost, starring and co-produced by Patrick Stewart.