Sasha Calle is Kara Zor-El, a.k.a. Supergirl, hitting the DC Extended Universe in June's The Flash. This isn't the first Supergirl on the big or small screen, so let's break down this new spin on a classic comic book character. The Flash movie has been in development since the late 1980s, so it's fitting that director Andy Muschietti and producer Barbara Muschietti dug up a caped crusader from way back when. Michael Keaton returns as the Big Bad Bat, because this is the multiverse. Christina Hodson's script takes inspiration from Geoff John's groundbreaking Flashpoint series. In that comic and in the film, Barry Allen speeds back in time to save his mom's life and accidentally creates an alternate timeline in which no superpowered humans seem to exist, until they find a certain imprisoned woman with a superpowers. Superman doesn't exist in this parallel universe, and Kara didn't crash-land on the kindly Kents' farm. Instead, it appears she fell into the arms of a research facility, where she's deprived of the sunlight that gives her those powers. Now, let's talk about how this Kara Zor-El differs from all those Supergirls who came before. First, "The Young and the Restless" star Sasha Calle isn't the blond and blue-eyed Supergirl of the comics, which was the template for Melissa Benoist on The CW series and Helen Slater in the '80s film. Instead, Calle and Muschietti took style inspiration for Kara from Lara Lane-Kent, Superman's daughter in the comics. Second, Kara's on-screen origin reframes Superman's story from the Flashpoint comics, where he was the one subjected to cruel experiments, not Supergirl. But Henry Cavill won't be donning the tights in James Gunn's new vision for the DCU. And it's uncertain if Sasha Calle will return for the Supergirl: Woman of Tomorrow film, or if this Kara will stay behind in the alternate universe that Barry must set right to return home. For now, we can't wait to see Supergirl let fly when The Flash hits theaters in June.