Alternative versions of Robin is later established that they are from the current time-line, and were shunted through time and given false memories by the Time Trapper, who wished to use them as sleeper agents against the time travel villain, Extant. 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. Whether this version existed at all, after the events of Infinite Crisis or would later to be revealed to be an alternative Dick, Jason,
Teen Titans (TV series) given as “Robin v.3: Tim Drake,” Dick Grayson and Jason Todd’s names having been written over. In subsequent episodes, though, he’s firmly established as Dick Grayson through flashbacks to his circus childhood. The policy of not mentioning the characters' secret identities has been broken a couple of times. In Season 5, the Doom Patrol members refer to Beast Boy by his real name, Garfield (though the Titans still continue to call him Beast Boy). In "Go", the Titans ask Beast Boy about his mask and he states it hides his true identity, though Raven points out that with green skin,