5. Season 6
All good things must come to an end, and earlier this month, Supergirl became the second OG Arrowverse show to conclude. As with a lot of final seasons, we saw the return of some friendly faces (Cat Grant!) and got to wrap up more than a few loose ends (Nia leveling up!). However, although many storylines ended, there were several that were still up in the air by the time the season ended –like what happened to M’gann (Sharon Leal) and what happens to the future now that Brainy (Jesse Rath) isn’t returning?
Let’s start with the good stuff. Alex and Kelly finally got their happy ending, adopting an adorable little alien girl named Esme and getting married in the series finale. If nothing else, the joy on Alex’s face saying her vows to Kelly was worth the wait. After briefly reuniting with her deceased mother, Nia finally embraced her dream abilities and became even more powerful. Although we all thought BraiNia had come to a premature end, Brainy returned for the wedding, vowing to stay for good with Nia –and hinting at yet another soon-to-be wedding. After a couple of motivating phone calls from Cat Grant, Kara was offered her dream job as Editor-in-Chief at CatCo and was finally able to lay down the burden of leading a double life (mostly).
Like season five, the series writers didn’t put together an outline for the final season of the show, and, unfortunately, the lead character seemed to be the lead casualty. Given Melissa Benoist’s time away from the show for maternity leave, she was understandably absent for part of the season, but she had almost no storyline this season. She suffered PTSD from her time during the Phantom Zone, which was never resolved. She somehow became less powerful throughout the show and was able to be bested at almost every turn by the most mundane villains. She confides in Alex that she is tired of being alone, yet, despite repairing her relationship with Lena, with the two of them again sharing quality alone time, the romantic pairing of Kara and Lena never happens. Kara is the only lead hero in the Arrowverse to not have a true romantic relationship that spans multiple seasons, yet she’s also the one who wanted it the most.