Batwoman

In the DC Comics, Mary Elizabeth "Bette" Kane is the original Bat-Girl and served as Batwoman's sidekick and Robin's counterpart. Growing up she would adopt the alias Flamebird (and later Hawkfire) in response to her counterpart's development as Nightwing. In the comics she is Kate Kane's younger cousin instead of her step-sister.

Ruby Rose was nearly paralyzed doing a stunt, as a result of herniated discs in her neck, and had to undergo emergency surgery and went so far as to post a video of her spinal surgery on Instagram.

Production assistant Amanda Smith was paralyzed while working on the set. According to the woman's GoFundMe page, Smith was working on set when a bucket of a lift lowered onto her head, trapping her beneath it. She underwent significant spinal surgery and currently cannot feel anything below her waist. However, there is hope that she will regain sensations in her legs with the proper therapy. Smith is unable to work for the foreseeable future, and the money raised through the GoFundMe will help her get through this difficult time. The campaign had raised $34,380 out of a $50,000 goal.

Rachel Skarsten has already portrayed a DC Comics character. She appeared as young Dinah Redmond (née Lance) on Birds of Prey (2002), daughter of the original Black Canary. In the series she would team with Batgirl (Barbara Gordon) and Huntress (Helena Kyle - the daughter of Batman and Catwoman) in a Gotham without a Batman.

The Batwoman costume was designed by Colleen Atwood, who also created the original costumes for Supergirl (2015), The Flash (2014) and Arrow (2012).