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Yes because joker killed Jason Todd the second robin
Richard (Dick) Grayson was the first Robin who is now Nightwing, Jason Todd was the second and he later took on the former identity of the Joker, 'Red Hood'
The robin from arkham city name is timothy drake the 3rd robin after Jason Todd who was killed by the joker
Jason Todd is a former Robin that went insane, thanks to the Joker's tortures. Edit: Tim Drake was the Robin that went insane from the Joker's tortures, not Jason Todd. Jason Todd, the second Robin, was brutally beaten to death with a crow bar by the Joker. In later canon, he is resurrected and returns as the "Red Hood". Jason, upon coming back from the dead, harbors resentment for Batman not avenging his cruel death. He particularly doesn't get along with Dick (the assumed Robin in Teen Titans) and is seen as an "Anti Hero" because of his questionable morals (he's willing to kill criminals, against Batman's will). At one point, Jason poses as Nightwing, Dick's alternate persona (post-robin), which is where the homage of Beast Boy's assumption of Red X as "Jason Todd" may have come from.
To date, only one Robin has ever been killed. Jason Todd, the second Robin, was killed in an explosion caused by the Joker. Jason has since gotten much better.
Red Robin - Jason Todd - was created in 2007.
the joker of course
The Arkham Knight is Jason Todd a former robin who was supposedly dead and came back to kill Batman for leaving him with the Joker unknown to Batman that he was even alive. And he also came back because Batman got a new robin Tim Drake so fast according to Jason Todd
The second Robin, Jason Todd, was killed by the Joker, but arguably by the readers. They had this big set up where you called a number to vote on if you thought he should live or die. The dies had it, and Jason bit the big one.------------Improve Answer------------jason Todd was killed temporarily... but was brought back as a violent vigilante, who takes up many aliases.
Jason Todd was killed by the Joker by disobeying Batman's order to stay away from his mother because the Joker planned a trap. In the end, he and his mother had died in a warehouse where the Joker had planted a bomb next to them. Glad to help -Camron
Red Hood was at first, The Joker. Later when Jason Todd (the second Robin) "died", he was awaken again in a Lazarus Pit and became the Red Hood.
He Died the Joker killed him by making a Massive explosion in a Big Warehouse then joker disappears that's it