The British actor - who stars in Paul W.S. Anderson's movie adaptation of Alexandre Dumas' historical novel "The Three Musketeers" - makes up three with his supermodel wife and baby boy.
Bloom is married to Miranda Kerr and claims his family is bit like the three Musketeers, whose motto is "one for all and all for one."
He also tells The Associated Press he thinks his eight-month-old son Flynn will enjoy his father's latest movie: "He'd marvel at the explosions and stuff."
Bloom plays the Duke of Buckingham in "The Three Musketeers in 3D" which opens in the U.K. next Wednesday.