The CW's Batwoman pilot is starting to take shape.

The latest addition to the cast is Rachel Skarsten, and she will be a big adversary for Kate Kane, according to Deadline, who first reported the news.

Skarsten is on board to play Alice, a villain who is described as having similar qualities to The Joker.

Yes, really.

“Swinging unpredictably between maniacal and charming,” Kate is going to find herself in a number of precarious situations as this vixen, and her Wonderland Gang mates cause a lot of trouble for the residents of Gotham City.

Skarsten is no stranger to the superhero world. She previously starred on The WB's one-and-done Birds of Prey as Dinah Lance.

This role also brings Skarsten back into The CW fold. She played Queen Elizabeth on Reign from 2015-2017, and we all know how the young-skewing network likes to bring former stars back.

Rachel joins a cast that already includes Meagan Tandy (Teen Wolf), Camrus Johnson (Luke Cage), and Nicole Kang (YOU).

The CW ordered the pilot for Batwoman just weeks after her first appearance in the Arrowverse.

"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 official logline.

"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."

Despite Rose receiving a mixed response for her turn as Kate Kane, the network clearly has faith that a full-fledged series can be a success.

If it does score a series order, it will join Arrow, The Flash, Supergirl, DC's Legends of Tomorrow, and Black Lightning on the network's roster of superhero dramas.

All told, the chances of this series not being ordered are slim to none, especially when you consider the hero's involvement in the Elseworlds crossover.

There's every reason to suggest Kate Kane will be back and kicking butt in the upcoming Crisis on Infinite Earths crossover which is slated to debut later this year.