Richard Grayson (Earth-5029)

"I don't know what clouds your judgement more Bruce, your guilt or your antiquated sense of morality. I'm not that perky little kid in spandex anymore, Bruce. I NEVER WAS! That kid died a long time ago! You can see him again... be with him again if you'll just stay still. I can't give him back to you with one simple trigger pull."

- Deathstroke

Dick Grayson was Batman's first Robin, who later became Nightwing, and shortly served as Batman himself. However, Dick went off the deep end under unknown circumstances and became the new Deathstroke after losing his right eye.