Jason put up a fight but was overwhelmed, beaten, and knocked unconscious. As Jason entered into the area, he was instantly trapped by Joker's Henchmen. Jason turned off his com link and tracer and tracked Joker to an underground abandoned wing of Arkham Asylum. One day, according to a City Story, it was heavily implied that Joker blew up a school house of children and that was the moment that Jason decided Joker needed to die.
Jason had always possessed an explosive temper with numerous incidents of him going too far in his actions as Robin, despite his natural talents and aptitude under Batman's guidance, with hints in his behavior that he might one day kill instead of using restraint.
He was thought to have been killed by the Joker. The Arkham Knight was originally Jason Todd, the second person to take the mantle of Robin after Dick Grayson and before Tim Drake. Incident Reports Before Arkham Asylum Incident
