A production of the William Shakespeare's "Richard III" with Sir Laurence Olivier that Marc's dad took him to see as a boy made a lasting impression, though he didn't start acting himself until a teacher recruited him to fill a suddenly vacant role in his junior year of high school. However, as the son of musicians, Marc acknowledges, "Performing is in our blood." Of the four Singer children, oldest brother Claude is the only non-performer. The three boys were hell raisers, but Marc says sister Lori Singer held her own. "She's an amazing girl and we're very close," he adds. Marc, who has fond memories of his childhood, was born in Vancouver, British Columbia, lived briefly in New York and grew up in Corpus Christi, TX, and in Oregon before going to college in the Midwest and Washington state. "I've got a lot from each city which I've lived in," he observes. In Seattle, he met his future wife, Hawaiian-born actress Haunani Minn. They live a California casual lifestyle, and Marc enjoys running, sailing, martial arts, boxing, skiing, and motorcycling in his spare time, as well as playing some Western classical piano every day.
Marc Singer has perhaps become most recognizable through the very prolific cable TV airings of the 1982 cult favorite film The Beastmaster in which he played the titular role. At one time, TBS was jokingly referred to as the "Beastmaster Channel" and HBO as "Hey, Beastmaster's On" due to the frequency that the film was rerun
Singer has starred or appeared in the following:
- Barnaby Jones
- Jigsaw John
- For Ladies Only
- V:The Final Battle
- Beastmaster 2
- The Young and the Restless
- Eagle Eye
- Singer is set to appear in the new V series second season. Unlike his original series castmate Jane Badler (who played a reimagined Diana), he will be playing a completely new character - Lars Tremont, who is a member of a highly classified secret organization consisting of military personnel and world leaders who have their own suspicions regarding the Visitors' true motivations.