Publication history of Dick Grayson leadership of the Titans to Wonder Girl, and takes a leave of absence from the team. In pre-"Crisis on Infinite Earths" continuity, the maturing Dick Grayson grows weary of his role as Batman's young sidekick. He renames himself Nightwing, recalling his adventure in the Kryptonian city of Kandor, where he and Batman meet the local hero of the same name. "Nightwing: Secret Files & Origins" #1 and "Nightwing: Year One" tell the full post-Crisis version of how Dick Grayson gives up his identity as Robin (having been "fired" by Batman). Uncertain what to do with his new-found independence, Dick considers
Dick Grayson team of Batman and Robin is the focus of Grant Morrison and Frank Quitely's "Batman and Robin" series. Their dynamic reverses the classic dynamic of Bruce and Dick, by having a lighter and friendlier Batman paired with a more intense and dark Robin. Over time, Dick's experience as the Dark Knight would harden his personality as his mentor. During this period, Dick Grayson as Batman also features as a member of the Justice League in a short-lived run by writer James Robinson. After an intense confrontation with the Club of Villains and the mysterious Doctor Simon Hurt (who has established