How does Batman get all the new Robins?

Bruce Wayne was there when Grayson's parents fell from the ropes at a circus performance and he took pity on him and adopted him. Everything progressed from there. Jason Todd was caught LITERALLY stealing the wheeles off the Batmobile and Batman took HIM in after left to be Nightwing. Jason Todd died at the hands of the joker later on. Tim Drake seeing how broken up Batman was he then deduced the identity of Batman as Bruce Wayne and the first Robin as Grayson and Squeezed his way into the Bat family. After Tim quit Bruce Wayne had a son named Damian and the HE became Robin. For a while Stephanie Brown was Robin (girl robin) but that didn't last long. Oh an Bruce Wayne is a detective he knew batgirl was a red head and an acrobat. She was skinny and about the height of Barbara Gordon. She knew about a lot of the police activities and she was around the same age. Plus she walked RIGHT into the batcave haha. Hoped I helped :)