Mars Callahan
Acting
From Studio City, California, U.S.
Also known as Gregory Mars Martin
Biography
From Wikipedia, the free encyclopedia. Mars Callahan (born 1971) is an American actor, director, producer and writer. He is known, among other things, for the movie Poolhall Junkies where he served as director, actor and screenwriter. At the age of eleven Callahan toured with a children's musi...
