Michael Cassidy was born on March 20, 1983 in Portland, Oregon, USA. He is an actor and producer, known for 超人集中营 (2006), 蝙蝠侠大战超人：正义黎明 (2016) and The O.C. (2003). He has been married to Laura Eichhorn since August 27, 2006. They have one child.
He went to Los Angeles in 2004 to audition for Superman Returns (2006). He didn't get the part but impressed McG, then the film's director and an executive producer of The O.C. (2003), who got him an audition.