8) Bette Kane (Flamebird)
Grayson may have been Batman’s sidekick when he was Robin, but when he becomes Nightwing he gets a sidekick of his own – Flamebird AKA Bette Kane (the original Bat-Girl back in the early 1960s). In truth, Bette Kane could be a slightly difficult character to adapt, but if they could nail the execution, the results could be pretty exciting.
In the comics, Bette has a lifelong crush on Grayson and becomes the hero Flamebird to impress him. That’s not really the sort of independent female hero DC are probably looking for, though. If this version of the character is not an option, however, then how The New 52 iteration? That recent reboot cast Bette as a slightly tougher her. Here, she becomes Hawkfire, under the tutelage of Batwoman (more on her in a moment).
Ms. Kane isn’t the number one character we want to see in the movie, but she is important to Nightwing’s story. The Nightwing mantle has passed through many heroes over the years – the title actually originated as an alternate identity for Superman – but they’ve all had a Flamebird by their side. As such, it would be a shame if the movie completely left out his crime-fighting partner.