Who killed Robin's parents?
Approved answer
Details of the Tragedy:
The youngest member of the acrobatic troupe known as the Flying Graysons, Robin witnesses the brutal murder of his parents at the hands of the mafia boss Tony Zucco, who was attempting to extort money from their circus employer. Following this heartbreak, Bruce Wayne adopts Grayson as his legal ward and subsequently trains him to become his partner, Robin.