text: It wasn't revealed until one of the later runs of the Teen Titans that this was not Dick Grayson, in fact his true identity was never uncovered. After this storyline, this version of Nightwing has not been seen since.
  Red Robin
  In Kingdom Come (a post-Infinite Crisis Earth-22), a middle-aged Dick Grayson reclaims the Robin mantle and becomes Red Robin, not at the side of his former mentor Batman, but rather with Superman's League. His uniform is closer to Batman's in design, rather than any previous Robin uniform. Age has not slowed him down, as he possesses all of his stealth and fighting skills. In this story he has a daughter with Starfire; Mar'i Grayson (Nightstar). Starfire has apparently died by the time of the story, according to the Elliot S! Maggin novelization, and Nightstar calls Bruce Wayne "Grandpa", despite no blood relation. At the end of the comic and the novel, Bruce and Dick reconcile.
  Red Robin reappeared in promotional material for the DC Countdown event. Eventually, it was revealed that this Red Robin was not Dick Grayson, but rather Jason Todd who appeared under the cape and cowl.  The Red Robin costume was stated to be more symbolism, than an actual costume choice, as Jason has been both the Red Hood and Robin, being shown as Red Robin.