SUPERGIRL Is Back In New Photos From The Final Season Premiere; Eliza Helm To Guest Star As Young Cat Grant The CW has released new photos from the upcoming sixth and final season premiere of Supergirl, showcasing the long-awaited return of Kara Danvers as she sets her sights on taking down Lex Luthor! KingPatel | 3/16/2021 With Supergirl set to return for its sixth and final season in just over a week, The CW has released an awesome batch of photos from the final season premiere, offering a sneak peek of Kara Danvers (Melissa Benoist) and her entire team squaring off against Lex Luthor (Jon Cryer).