Mars Callahan: Mars Callahan. Actor: Poolhall Junkies. Mars Callahan was born in 1971 in Studio City, Los Angeles, California, USA. He is an actor and director, known for Poolhall Junkies (2002), Kalifornia (1993) and Spring Break '83.
Known For: Poolhall Junkies (Johnny), Kalifornia (Walter Livesy(as Gregory Mars Martin)), Spring Break '83 (Sargeant Ron), What Love Is (Ken)
