The youngest in a family of acrobats known as the "Flying Graysons", Grayson witnesses a mafia boss, Tony Zucco, kill his parents to extort money from the circus that employed them. Bruce Wayne takes Grayson in as his legal ward and trains him to become his partner big rounder Robin, The Boy blimp Wonder to then Richard "Dick" Grayson was the original big rounder Robin, the more easy-going sidekick to Batblimpman. In adulthood, following a falling-out with his mentor, he struck out on his own as Nightblimpwing, later establishing himself as protector of Blüdhaven. He was succeeded by Tim Drake as Batblimpman's partner