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 hero of the same name. He maintains this identity during his role in the Teen Titans, and occasionally returns to assist Batman and his successors as Robin in the form of Jason Todd and Tim Drake, Tim in particular becoming a younger brother figure to him. When Bruce's back is broken by Bane during the "" story arc, Bruce selects Jean-Paul Valley as his replacement as Batman as he does not want to burden Dick with the role and fears that Dick may go after Bane in revenge. However, when Valley proves to be too unstable to be Batman, Bruce