(written from a Production point of view)
Ty Murphy is an actor who appeared as an alien guard in the Star Trek: Voyager fourth season episode "Concerning Flight". He received no credit for his appearance but was identified by the name tag of his costume which was sold off on the It's A Wrap! sale and auction on eBay where his name was misspelled as Ty Murphey.  For "Concerning Flight", Murphy filmed his scenes between Monday 15 September 1997 and Thursday 18 September 1997 on Paramount Stage 16 and on location at the Boyle Bros. Ranch and at the LA DWP Valley Generating Station.
Murphy also appeared as a Romulan officer in the fourth season episode "Message in a Bottle" for which he filmed his scenes between Friday 3 October 1997 and Tuesday 7 October 1997 on Paramount Stage 9 and 16. His uniform from this episode was previously worn by Dennis Madalone, Jay Marks, and James R. Tweedell on Star Trek: Deep Space Nine and later sold off on the It's A Wrap! sale and auction on eBay. 
Several years later, Murphy portrayed a Starfleet officer next to Keith Carradine's A.G. Robinson in the Star Trek: Enterprise second season episode "First Flight". He filmed his scenes on Friday 14 March 2003 on Paramount Stage 9 and is listed under "Robinson's pals" on the call sheet.
In 1998 he appeared in the independent film Heaven & the Suicide King alongside Nikita Ager and Francis Praksti. He also worked as stand-in on the 1999 comedy Seven Girlfriends, starring Olivia d'Abo, Michael Buchman Silver, and Stephanie Erb, and appeared in the 2000 drama Bounce, with Julianne Christie and Scott Alan Smith.
Other acting work includes day playing and recurring roles in episodes of Days of Our Lives, Brooklyn South, Rude Awakenings, Haunted, and The West Wing as well as the television thriller Miami Hustle (1996), the science fiction drama Contact (1997, with Geoffrey Blake, Tucker Smallwood, and Robin Gammell), and the action comedy Rush Hour (1998, with Tzi Ma, Mark Rolston, Gene LeBell, Wayne King, Jr., Manny Perry, Stephen Blackehart, and James Lew).