Other roles include the 1982 film If You Could See What I Hear (where he portrayed blind musician Tom Sullivan), Body Chemistry, Something for Joey (as football star John Cappelletti), Watchers II, High Desert Kill, The Fier, Go Tell the Spartans and Dead Space, as well as General Klaus Von Kraut in A Man Called Sarge.
He found fame in the early 80s with the movie The Beastmaster and its sequels, in which he played the title role, and as Mike Donovan in the 1983 miniseries V, the 1984 sequel V: The Final Battle, and the TV series V: The Series.
Singer appeared in the last episode of Season 2 of the new version of V, airing on March 15, 2011, however, instead of reprising his role of Mike Donovan, he plays a new character called Lars Tremont. He was in a recurring role as General Matthew Shrieve on The CW's television series Arrow's third season.
His wife was Hawaiian-born Actress Haunani Minn. She died in November 2014.
