After reading the recent Nightwing: The New Order (27 September 2017), I was drawn to the plight of Dick Grayson’s son, Jake, and then I started thinking about all the children of our first Robin.
Four came to mind – three boys and one girl born to two different women. Two of the boys are named after Grayson’s father, John, and the sole girl is named after his mother, Mary, but in a Tamaranean naming scheme. Two of them (to date) took up a superhero identity Robin and Nightstar and none of them born into the main continuity.
There may or may not be more otherworldly children of Grayson, after all he has over seventy-five years of history, but no more come to mind at this moment.
Barbara Gordon: Nightwing (Vol. 3) #4 by Trevor McCarthy (Middle Left)
Jake Grayson (Nightwing: The New Order): Nightwing: The New Order #2 by Trevor McCarthy (Lower Right)
John Grayson (Batman Beyond): Batman Beyond 2.0 #23 by Thony Silas (Lower Left)
John Grayson (Earth-2): Earth 2: Society #22 by Vicente Cifuentes (Upper Left)
Koriand'r: Nightwing: The New Order #2 by Trevor McCarthy (Middle Right)
Mar'i Grayson (Earth-22): The Kingdom: Nightstar #1 Cover by Matt Haley (Upper Right)
Richard John “Dick” Grayson: Nightwing (Vol. 3) #4 by Trevor McCarthy (Center)
Just another orphan growing up in Crime Alley, Jason Todd’s fateful encounter with Batman was sealed when he decided to steal the tires of the Batmobile. Seeing promise in Todd, Batman invited Todd to train as Robin and eventually adopted him as his son. Todd was a quick study, but Batman worried over his aggression and hoped that Todd could fuel his rage in a more constructive manner. Todd later died the hands of The Joker with his biological mother, Shelia Haywood, in Ethiopia.
Jason Todd was a young street orphan living in Crime Alley who encountered Batman while attempting to steal the tires of the Batmobile. Bruce Wayne sees to it that Todd was placed in a school, but it turned out to be a school of thieves. By helping Batman apprehend this gang of thieves, Todd earned the mantle of Robin that was left opened by the previous owner, Dick Grayson.