Dean George Tanaka was born on July 31, 1966, on a U. S. Air Force Base in Mount Clemens, Michigan, the biological son of Roger Tanaka, a U. S. serviceman, and actress Sharon Thomas. He is of three eighths Japanese descent, along with French Canadian, Irish, and Welsh. Cain never met his biological father. “He's not the kind of man I want to be,” Dean Cain has said of his biological father. “He was an unfaithful husband and not much of a father. ” Soon after Dean's birth Sharon moved him and older brother Roger to Los Angeles to pursue an acting career. In 1969, Cain's mother married film director Christopher Cain, who adopted Dean and his brother, musician Roger Cain; the family moved to Malibu, California. They later had a daughter, actress Krisinda Cain.