The character will make her debut during December's crossover event between "Arrow," "The Flash" and "Supergirl," which begins filming on Tuesday in Vancouver. There's also a solo show in development for Rose's Batwoman for the 2019-20 television season.
"Armed with a passion for social justice and a flair for speaking her mind, Kate Kane soars onto the streets of Gotham as Batwoman, an out lesbian and highly trained street fighter primed to snuff out the failing city's criminal resurgence," reads the show's official synopsis. "But don't call her a hero yet. In a city desperate for a savior, Kate must overcome her own demons before embracing the call to be Gotham's symbol of hope."
Earlier this week, producer Greg Berlanti told The Hollywood Reporter that Rose is "terrific in the role, and we're excited for people to see the story."
Berlanti also spoke out against some of the backlash Rose was met with when she was cast in the part.
"Whenever you're bringing change about in any form, there are always conversations that happen. I go all the way back to 'Dawson's Creek,'" he said. "Twitter didn't exist, but we would get boxes of letters expressing opinions in all directions from were we making enough change, should we be making more change, or why did we feel like we needed to do these things? It's always part of the process, so just focus on the story and make the best episode that you can."
The "Elseworlds" crossover kicks off Sunday, December 9 on "The Flash."
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