Why Arnold Schwarzenegger's Son Joseph Baena Won't Use His Last Name

Arnold Schwarzenegger's secret son Joseph Baena reveals why he's ditched his famous father's surname

Arnold Schwarzenegger's son Joseph Baena, 26, shows off his chiseled physique as he vacations with his bikini-clad girlfriend Mel in Baja

Arnold Schwarzenegger's son Joseph Baena, 26, shows off his chiseled physique in a new Instagram video