Dad: Robert Downey, Sr.
Son: Robert Downey, Jr.
Robert Downey, Sr. is a noted independent filmmaker based in New York, and is best known for "Putney Swope," a satire about an advertising agency in Manhattan. Junior's first foray into film came at the age of 5, when he acted in his dad's movie "Pound." —XFINITY Entertainment Staff (Photo by Stephen Lovekin/Getty)
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