Who killed Robin's parents?
Approved answer
The Tragic Fate of Robin's Parents
As the youngest member of the acrobatic group known as the Flying Graysons, Grayson witnessed a tragic event wherein mafia boss Tony Zucco murdered his parents. This despicable act was committed to extort money from the circus that employed them. Following this heart-wrenching incident, Bruce Wayne took Grayson under his wing, becoming his legal guardian and training him to become his sidekick, Robin.