In 1994, Marc got married to Lori Wyman. Lori Wyman is also one of the renowned names in the film industry, she is the casting director. As a loving husband and wife, they are strongly bonded into this married life. There is no any information related to his extra affairs, girlfriend and divorce.
As March dreamed to be an actor since his childhood days, he began pursuing his higher majored in Theater. He also has a BFA in theater. He has been active as an actor since 1985. He made his acting debut by starring the role of Brookings in the Miami Vice. From 1989, he began portraying in the TV series The Adventures of Superboy. He got his rise in fame after he began starring the role of Agent Ives in the TV series Prison Break. He has been earning lucrative amount of salary and his net worth is also high.