(written from a Production point of view)
Kevin Michael Grover was a regular background actor on several episodes of Star Trek: The Next Generation, Star Trek: Deep Space Nine, and Star Trek: Voyager. He mostly portrayed Cardassians and "Westmore aliens", but also played several other background roles. As a background performer he received no credit for his appearances. Grover was named "Kevin, the Cardassian" on set. Parts of his make-up were once sold by auction. 
Grover played a Sign Language Speaking Golfer in the 1996 comedy Spy Hard, which also features Star Trek performers Michael Berryman, Keith Campbell, Paul Eliopoulos, Bruce Gray, John Kassir, Diane and Elaine Klimaszewski, Clyde Kusatsu, Katherine Moffat, and Peewee Piemonte.