(written from a Production point of view)
Bill Hagy is an actor who appeared in several episodes of Star Trek: The Next Generation and Star Trek: Deep Space Nine. As a background actor he received no credit for his appearances and was identified by the name tags of his costumes which were sold off on the It's A Wrap! sale and auction on eBay.   
Hagy has played in films such as Bed of Lies (1992, with John Anderson), Redboy 13 (1997), Jesus 2000 (1998), and The Gentleman Don La Mancha (2004).