Richard John 'Dick' Grayson is a fictional character and superhero appearing in American comic books published by DC Comics, commonly in association with Batman. Created by writer Bill Finger and artist Bob Kane, he first appeared in Detective Comics #38 in April 1940 as the original and most popular incarnation of Robin, Batman's crime-fighting partner and sidekick. In Tales of the Teen Titans #44 (July 1984) the character, after becoming a young adult and in an effort to make himself a separate independent hero from Batman, retires his role as Robin and assumes the superhero persona of Nightwing (created by Marv Wolfman and artist George Prez). The youngest in a family of acrobats known as the 'Flying Graysons', Grayson witnesses a mafia boss named Tony Zucco kill his parents in order to extort money from the circus that employed them. After the tragic murder, Batman (Bruce Wayne) takes Grayson in as his legal ward (retconned as an adopted son in some cases) and trains him to become his crime-fighting partner Robin. He is written by many authors as the first son of Batman. As well as being Batman's crime-fighting partner, Grayson establishes himself as the leader of the Teen Titans, a team of teenage superheroes. As a young man, he retires as Robin and takes on his own superhero identity to assert his independence, becoming Nightwing. As Nightwing, he continues to lead the Teen Titans, Titans, and later the Outsiders. In the first volume of his eponymous series (19962009), he becomes the protector of Bldhaven, Gotham's economically troubled neighboring city, the locale the character is most closely associated with.