Jason Todd was the successor to Dick Grayson as Robin. He was initially a popular character who, through the efforts of writers to give Robin more of an ‘edge’ became less and less so. DC, in a stunt it would never repeat, held a telephone poll on what should be his fate leading to Jason Todd being murdered by The Joker in a scenario that left Batman full of second guessing guilt as to how he could have prevented it. Interestingly enough, over the years, the character’s history has been revised, and revised further to make Todd into a reckless, hate filled monster, whose own impatience led him to his death. In one of the most interesting articles on comics I have ever read, benicio127 at Scans Daily traces the steps in how Jason Todd has become blamed for his own demise.