Richard Grayson (Earth-5430)

"Who do I think I am? Good question, really, and I'll answer like this: I've seen too much to be Robin, but I'm still too optimistic to be Batman. I'm Nightwing. I'm Officer Dick Grayson. I'm Barbara's boyfriend, Bruce Wayne's adopted son, and the last living member of the Flying Graysons. I'm happy"

- - Nightwing When his parents, the Flying Graysons, were killed in front of him by crime boss Toni Zucco, Richard "Dick" Grayson was raised by Bruce Wayne as his son, with Dick eventually discovering Bruce's identity as Batman. Bruce then allowed Dick to aid him in his crime fighting after extensive training, and he became the Robin. After years of partnership, Dick gave up the Robin mantle and started to act alone as the vigilante Nightwing.