American actor Gary Graham, known for a variety of roles in the Star Trek universe, and his lead role on the tv series Alien Nation, has reportedly passed away. He was 73 years old.  His ex-wife, actress Susan Lavelle, broke the sad news on her personal Facebook page in the early morning hours of Tuesday, Jan. 23, sharing a series of photos that included Gary hugging their daughter, Haylee Graham, he and Lavelle attending the Sixth Annual Television Hall of Fame Awards in 1990, and a press photo from the series Alien Nation, in which he starred as Detective Matthew Sikes.

With a career spanning five decades beginning in the 1970s in television and movies, he is perhaps best known for his starring role as Detective Matthew Sikes in the television series Alien Nation (1989–1990) and five subsequent Alien Nation television films (1994–1997), as well as his work in the Star Trek franchise, most notably the recurring role of Soval, the Vulcan ambassador to Earth in Star Trek: Enterprise. Born in Long Beach, California. One of his earliest roles was in the 1980 CBS mini series  Scruples based on the Judith Krantz novel starring Lindsay Wagner. He was cast as a “hitman” on the television show Moonlighting co-starring opposite Bruce Willis. Graham played more than 38 TV roles and had been in more than 40 movies.

He also guest-starred on Star Trek: Voyager (1995) once, playing Ocampan community leader Tanis in the season 2 episode “Cold Fire”. He played Ragnar in the fan production Star Trek: Of Gods and Men and continued that role in Star Trek: Renegades. In 2015, Graham reprised his role as Ambassador Soval, in the fan film Star Trek: Axanar. As a musician, Graham was in the bands The Gary Graham Garage Band, The Gary Graham Band and The Sons of Kirk.