...Warner Brothers even WANTS a living Robin in this universe. They are more or less able to do what they want with the canon; point being, they can do no Robins, one Robin, Carrie Kelly Robin, or a whole new one entirely. There is not guarantee that Grayson or Drake even exists in the universe. In fact, I wouldn't put it past WB to actually make it Dick Grayson that was killed, as he is a more recognizable name and therefore would appeal to a wider audience. But like I said, I believe it is going to end up being Jason Todd.