(written from a Production point of view)
Frank T. Diresta is an actor who appeared as a Bajoran Pah-wraith follower in the Star Trek: Deep Space Nine seventh season episode "Covenant". As a background actor he received no credit for his appearance and was identified by the name tag of his costume which was sold off on the It's A Wrap! sale and auction on eBay. 
In 1998 he portrayed a country bar cop in David Carson's thriller Letters from a Killer, which also featured Trek performers Olivia Birkelund, Tina Lifford, Bruce McGill, Mark Rolston, Don Stark, Scott Lincoln, Alan Echeverria, Brad Blaisdell, and Marcy Goldman.