The 100 star Lindsey Morgan has already been rumored for the role of Batgirl due to some pretty cryptic tweets she published shortly before Whedon's film was announced—and if she's already been cast, she'd make a pretty good choice.

Morgan, best known for playing Raven Reyes on the CW's apocalyptic drama, has a lot of experience playing a very intelligent heroine; her character serves as the mechanic for the stranded teens and she's used her technical knowledge to get them out of quite a few jams, a skill Barbara should definitely have as well. She even has experience playing a recovery from a tough injury—Raven struggled with nerve damage after being shot in the leg during the show's second season.

Morgan's experience on The 100 also shows she has the action chops to take on the role, proving she can convincingly hold her own in a fight scene (even if TV battles aren't as elaborate as Batgirl's would be). If fan theories are true and Morgan really is set to take on the role, she'd be a great fit for the batsuit.