(written from a Production point of view)
Duncan K. Fraser (born 5 June 1976; age 41) is the actor who appeared as Ensign Walsh in several episodes of Star Trek: Enterprise's third and fourth seasons. He remained uncredited for most of his appearances with the exception of "Bound", for which his character was credited as "Crewman #2".
Born in Kalamazoo, Michigan, Fraser is a graduate of Asbury College in Kentucky with a degree in Media Communications, Emphasis in Film Studies. Shortly after his graduation in 2002 he moved to Los Angeles. Prior and after his Enterprise background work, he worked as a security guard at Paramount Pictures.
Fraser portrayed supporting and leading roles in several stage plays such as Daniel Boone, The Man and The Legend and The Neighborhood. He also acted on a few short and independent films, most notably the Star Wars fan film Return of Pink Five in 2006, written and directed by Trey Stokes and starring Amy Earhart, on which he worked as second assistant director, too. More recently, Fraser appeared as a security guard in David Lynch's mystery drama Inland Empire (2006, with Ian Abercrombie and Stanley Kamel).
(This list is currently incomplete)