Alexander Anthony ″Alex″ Black (born April 20, 1989) is an American television and motion picture actor. Black was born in Redwood City, California. He has appeared in several popular movies, as well as minor role on Charmed. He mostly recently portrayed Seth Powers in Nickelodeon's hit series, Ned's Declassified School Survival Guide. He is also seen on a commercial of Wal-Mart for the PlayStation 3 and Ocean's Thirteen..