John Grayson was one of the three acrobats in the Haly's Circus group "the Flying Graysons".

He is the father of Dick Grayson, who would go on one day to become Nightwing. He and his wife, Mary Grayson, were murdered by Tony Zucco when he rigged their trapezes.

John had an affair with Zucco’s wife, fathering a daughter Melinda. Zucco does not appear to have known that Melinda was not his child, so it is unlikely John and Mary were murdered as retaliation.[1]




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