The upcoming season of Supergirl will see the character progression of show's new main Big Bad, Reign. Played by series newbie, Odette Annable, the arrival of the villain already teased at the end of season 2, although, admittedly, because of the very eventful finale that involved Kara being heartbroken and Cat's return into the fold, many fans might not have thought it to be as pivotal as it was.
To the uninitiated, Reign, who is mined from the pages of the comic books (as most characters in these shows are) is a Worldkiller who is technically a biological weapon created on Krypton. However, they were eventually outlawed by the Kryptonian Science Council following the realization of just how much danger they pose to the planet. Despite basically knowing where she came from, her complete origin story is unknown even to her. With her home planet already non-existent, she descends to Earth in an effort to find some answers regarding her mysterious creation.
While fans of the comic books know Reign's official story, it is uncertain just how much of it will be used in Supergirl. Based on a recent interview with EW, executive producer Andrew Kreisberg is also starting to figure out how they will present a version of the character in a way that presents her as a complex antagonist that will also be easy for fans to be engaged with:
"I’m not only competing with myself on Supergirl, but I’m competing with myself on all the other shows that I’ve done, and by that, I mean I don’t want to repeat what I’ve done on Supergirl, nor do I want to repeat what I’ve done on Arrowand Flash, so when we were figuring out Reign, one thing we’ve never really seen on any of these shows is we’ve never seen the big bad become the big bad. Usually on these shows, you either meet the big bad at the end of episode 1 or you meet them at episode 7 or 9, and you realize that they’ve been pulling the strings the whole time and were out there working with their multi-year plan to take down the heroes or destroy the city. When we meet Reign, she’s just a woman. Her name is Samantha Arias and she’s a single mom, and she has no idea that she is Reign. She has no idea that she was the baby in the pod at the end of last season, so the journey that she takes this season is watching her realize her heritage and see how it manifests."
We have already spent two full seasons seeing Kara's respective personal and superhero journey and it only makes sense that we at least have a similar arc for her villains, just to make sure that they don't feel unworthy of going up against the Girl of Steel. Starting with Reign is a great move given that her comic book story already opens up a lot of opportunities to showcase the character's growth, and not just an antagonist.
While Reign takes her time finding more about her true self, Kara will be busy with other things such as Supergirl's first villain of the season, Bloodsport aka Robert DuBois, as well as still nursing a broken heart with the loss of Mon-El (Chris Wood). Meanwhile, fans can also look forward to more of the relationship between Kara’s sister Alex Danvers (Chyler Leigh) and Maggie Sawyer (Floriana Lima).
Supergirl season 3 premieres Monday, October 9 @8pm on The CW.