A Breif History of Robin

The youngest in a family of acrobats known as the "Flying Graysons," Dick watched as a mafia boss killed his parents in order to extort money from the circus that employed them. Bruce Wayne, secretly the vigilante Batman, took him in as his legal ward after witnessing their deaths, and eventually as his sidekick, Robin.
As Dick grew older and spent more time as the leader of the Teen Titans, he decided to leave his role as Robin and take on the identity of Nightwing to assert his independence.

Though originally popular, following a revamping of his origin by Max Allan Collins, the Jason Todd version of Robin was not well received by fans. For 1988's Batman: A Death in the Family story-line, DC Comics held a telephone poll to determine whether or not the character would die at the hands of the Joker, Batman's arch-nemesis. The character was killed off by a vote of 5343–5271.
However, in 2005's story arc Under the Hood the character was resurrected, eventually becoming the second Red Hood and assuming a new role as an antihero who resembles Batman in many ways, except with a willingness to use lethal force and weapons.

When Tim was a young child, he and his family went to the circus and witnessed the murder of the Flying Graysons, alongside Bruce Wayne. A few years later at the age of nine, Timdigured ou the secret identity of Batman and Robin. After Jason's death, Timothy began to take notice of a drastic and almost psychotic change in Batman's behaviour, in which he became convinced that Batman needed a Robin to maintain his sanity.
Later on, Tim would graduate to the role of Red Robin, leaving the cowl open for Damian Wayne.

Born as the daughter of Cluemaster,one of Gotham City's third-rate villains, Stephanie came on to the scene as the Spoiler to leave Batman clues to her father's plans.
During the time Tim was forced to hang up the cowl by his father, Stephanie demanded Batman train her as the new Robin. Unfortunately, for disobeying his orders on two missions, Batman later stripped her of the costume and told her that she was done being a hero because he couldn't trust her in the field.

Damian Wayne is the only biological son of Bruce Wayne and Talia, the only grandson of Ra's al Ghul. Due to Damian spending his gestation in a laboratory, he was raised by his mother, Talia, until he was 10, at which point she left him in the care of his father, Bruce, who had not been aware of his son's existence until that point in time. Damian is violent and self-important, and was trained by the League of Assassins, learning to kill at a young age. Soon after, Damian took up the role of Robin.