based cartoons. There are  several hints at this Robin actually being Dick Grayson, however,  most notably in the episode "Haunted", where Raven enters Robins  mind and brief flashes of memories are shown, including a silhouette  of Robin in a cave with his right hand raised (the oath in the  Batcave taken by Dick Grayson) and a brief moment of a man and a  woman falling, with trapeze stands in the background (the death of  the Flying Graysons). Both Tim and Dick probably swore the same oath  in the cave. Also in the comics it was revealed that Tim Drake was  in the audience when the Flying Graysons died. Tim was able to  figure out Dick Grayson was Robin and confronted him, and tried to  convince Dick to give up his Nightwing Id, and become Robin again.  Also, in the episode "How Long Is Forever?", where Starfire is  teleported into the future, she meets with Robin who, by then, has  become Nightwing.