Who killed Robin's parents?
Approved answer
The Tragic Fate of Robin's Parents
As the youngest member of the acrobatic family known as the Flying Graysons, Grayson is forced to witness a horrifying event when mafia boss Tony Zucco murders his parents to extort funds from their circus. Following this tragedy, Bruce Wayne adopts Grayson as his legal ward and mentors him, ultimately preparing him to become his sidekick, Robin.