I decided to make this article "Conjectural," since Zucco was only vaguely referenced, and indirectly at that.
In the scene, Robin says that he performed in a circus act with his parents, who were killed. This references Haly Circus, the Flying Graysons, John Grayson and Mary Grayson, but not necessarily Zucco. This is because he said his parents were "Killed," he didn't say "murdered." If he would have said "murdered" than that would reference the murderer who is Zucco, but this was not the terminology used. But this is probably due to broadcasting standards, and we can assume that it was meant as a reference to Tony Zucco.
--Noah Tall 21:54, July 20, 2010 (UTC)